From be569ba4accf8a4e08ab3e810d6420e501ec6595 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Tue, 8 Jul 2025 21:20:29 -0400
Subject: [PATCH 01/97] fix(taskfiles)!: Check the specified FILE_SHA256
 matches the downloaded file in `remote:curl`.

---
 exports/taskfiles/utils/remote.yaml |  8 +++++---
 taskfiles/remote/tests.yaml         | 27 ++++++++++++++++++++++-----
 2 files changed, 27 insertions(+), 8 deletions(-)

diff --git a/exports/taskfiles/utils/remote.yaml b/exports/taskfiles/utils/remote.yaml
index c7f1fa3..116de4c 100644
--- a/exports/taskfiles/utils/remote.yaml
+++ b/exports/taskfiles/utils/remote.yaml
@@ -23,9 +23,8 @@ tasks:
     status:
       - >-
         diff
-        <(echo "{{.FILE_SHA256}}")
-        <(openssl dgst -sha256 "{{.OUTPUT_FILE}}"
-        | awk '{print $2}')
+          <(echo "{{.FILE_SHA256}}")
+          <(openssl dgst -sha256 "{{.OUTPUT_FILE}}" | awk '{print $2}')
     cmds:
       - |-
         mkdir -p "{{dir .OUTPUT_FILE}}"
@@ -50,6 +49,9 @@ tasks:
           echo "Failed to download after $max_attempts attempts."
           exit 1
         fi
+        diff \
+          <(echo "{{.FILE_SHA256}}") \
+          <(openssl dgst -sha256 "{{.OUTPUT_FILE}}" | awk '{print $2}')
 
   # Uses curl to download a tar file from the given URL and extracts its contents.
   #
diff --git a/taskfiles/remote/tests.yaml b/taskfiles/remote/tests.yaml
index 59cffa7..0275695 100644
--- a/taskfiles/remote/tests.yaml
+++ b/taskfiles/remote/tests.yaml
@@ -4,21 +4,38 @@ includes:
   remote: "../../exports/taskfiles/utils/remote.yaml"
 
 vars:
-  G_EXTRACTED_ZIP_CODEOWNERS_PATH: "yscope-dev-utils-main/.github/CODEOWNERS"
-  G_EXTRACTED_ZIP_LICENSE_PATH: "yscope-dev-utils-main/LICENSE"
+  G_EXTRACTED_ROOT_DIR: "yscope-dev-utils-fd7c42dd7b59f8f4ab0eccba5078393e10cddb00"
+  G_EXTRACTED_ZIP_CODEOWNERS_PATH: "{{.G_EXTRACTED_ROOT_DIR}}/.github/CODEOWNERS"
+  G_EXTRACTED_ZIP_LICENSE_PATH: "{{.G_EXTRACTED_ROOT_DIR}}/LICENSE"
   G_EXTRACTED_ZIP_PULL_REQUEST_TEMPLATE_PATH: >-
-    yscope-dev-utils-main/.github/PULL_REQUEST_TEMPLATE.md
-  G_TEST_ZIP_FILE_SHA256: "2c9a21f83484e004c41c28be759451dbdc787190eb044365ba58f7bb846418f6"
-  G_TEST_ZIP_FILE_URL: "https://github.com/y-scope/yscope-dev-utils/archive/refs/heads/main.zip"
+    {{.G_EXTRACTED_ROOT_DIR}}/.github/PULL_REQUEST_TEMPLATE.md
+  G_TEST_ZIP_FILE_SHA256: "141e807e9b4b9e28c254165c5a402ff54c0c9d3f9153178dfcff5354ace0c3d4"
+  G_TEST_ZIP_FILE_URL: "https://github.com/y-scope/yscope-dev-utils/archive/fd7c42d.zip"
 
 tasks:
   default:
     internal: true
     cmds:
+      - task: "curl-test-success"
       - task: "download-and-extract-zip-test-basic"
       - task: "download-and-extract-zip-test-exclusions"
       - task: "download-and-extract-zip-test-inclusions"
 
+  curl-test-success:
+    vars:
+      OUTPUT_DIR: "{{.G_OUTPUT_DIR}}/{{.TASK | replace \":\" \"#\"}}"
+      OUTPUT_FILE: "{{.OUTPUT_DIR}}.zip"
+    cmds:
+      - task: "remote:curl"
+        vars:
+          FILE_SHA256: "{{.G_TEST_ZIP_FILE_SHA256}}"
+          OUTPUT_FILE: "{{.OUTPUT_FILE}}"
+          URL: "{{.G_TEST_ZIP_FILE_URL}}"
+      - |-
+        diff \
+          <(echo "{{.G_TEST_ZIP_FILE_SHA256}}") \
+          <(openssl dgst -sha256 "{{.OUTPUT_FILE}}" | awk '{print $2}')
+
   download-and-extract-zip-test-basic:
     vars:
       OUTPUT_DIR: "{{.G_OUTPUT_DIR}}/{{.TASK | replace \":\" \"#\"}}"

From 3a9334e3fad3bb671a99015fc6b3a7d441ea27d6 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Fri, 11 Jul 2025 20:50:07 -0400
Subject: [PATCH 02/97] Add checksum unit tests.

---
 taskfiles/checksum/tests.yaml | 148 ++++++++++++++++++++++++++++++++++
 taskfiles/tests.yaml          |   2 +
 2 files changed, 150 insertions(+)
 create mode 100644 taskfiles/checksum/tests.yaml

diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
new file mode 100644
index 0000000..542d701
--- /dev/null
+++ b/taskfiles/checksum/tests.yaml
@@ -0,0 +1,148 @@
+version: "3"
+
+includes:
+  checksum:
+    internal: true
+    taskfile: "../../exports/taskfiles/utils/checksum.yaml"
+
+tasks:
+  default:
+    cmds:
+      - task: "checksum-test-rerun"
+      - task: "checksum-test-skip"
+      - task: "checksum-test-update"
+
+  checksum-test-rerun:
+    vars:
+      OUTPUT_DIR: "{{.G_OUTPUT_DIR}}/{{.TASK | replace \":\" \"#\"}}"
+      SRC_DIR: "{{.OUTPUT_DIR}}/src"
+
+      CHECKSUM_FILE: "{{.SRC_DIR}}.md5"
+      CHECKSUM_FILE_REF: "{{.CHECKSUM_FILE}}.ref"
+      FILE_0: "{{.SRC_DIR}}/0.txt"
+      FILE_1: "{{.SRC_DIR}}/1.txt"
+    cmds:
+      - task: "checksum-test-init"
+        vars:
+          OUTPUT_DIR: "{{.OUTPUT_DIR}}"
+      - task: "create-dir-with-checksum"
+        vars:
+          CHECKSUM_FILE: "{{.CHECKSUM_FILE}}"
+          FILE_PATH: "{{.FILE_0}}"
+      - "mv '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}'"
+      - task: "create-dir-with-checksum"
+        vars:
+          CHECKSUM_FILE: "{{.CHECKSUM_FILE}}"
+          FILE_PATH: "{{.FILE_1}}"
+
+      # Test create-dir-with-checksum ran the second time.
+      - "test ! -e '{{.FILE_0}}'"
+      - "test -e '{{.FILE_1}}'"
+      - |-
+        if cmp --silent "{{.CHECKSUM_FILE}}" "{{.CHECKSUM_FILE_REF}}"; then
+            echo "'{{.CHECKSUM_FILE}}' and '{{.CHECKSUM_FILE_REF}}' should differ."
+            exit 1
+        fi
+
+
+  checksum-test-skip:
+    vars:
+      OUTPUT_DIR: "{{.G_OUTPUT_DIR}}/{{.TASK | replace \":\" \"#\"}}"
+      SRC_DIR: "{{.OUTPUT_DIR}}/src"
+
+      CHECKSUM_FILE: "{{.SRC_DIR}}.md5"
+      CHECKSUM_MOD_TS: "{{.CHECKSUM_FILE}}-mod-ts.txt"
+      FILE_0: "{{.SRC_DIR}}/0.txt"
+      FILE_1: "{{.SRC_DIR}}/1.txt"
+    cmds:
+      - task: "checksum-test-init"
+        vars:
+          OUTPUT_DIR: "{{.OUTPUT_DIR}}"
+      - task: "create-dir-with-checksum"
+        vars:
+          CHECKSUM_FILE: "{{.CHECKSUM_FILE}}"
+          FILE_PATH: "{{.FILE_0}}"
+      - "date -r '{{.CHECKSUM_FILE}}' > '{{.CHECKSUM_MOD_TS}}'"
+      - task: "create-dir-with-checksum"
+        vars:
+          CHECKSUM_FILE: "{{.CHECKSUM_FILE}}"
+          FILE_PATH: "{{.FILE_1}}"
+
+      # Test create-dir-with-checksum didn't run the second time.
+      - "test -e '{{.FILE_0}}'"
+      - "test ! -e '{{.FILE_1}}'"
+      - "diff '{{.CHECKSUM_MOD_TS}}' <(date -r '{{.CHECKSUM_FILE}}')"
+
+  checksum-test-update:
+    vars:
+      OUTPUT_DIR: "{{.G_OUTPUT_DIR}}/{{.TASK | replace \":\" \"#\"}}"
+      SRC_DIR: "{{.OUTPUT_DIR}}/src"
+
+      CHECKSUM_FILE: "{{.SRC_DIR}}.md5"
+      CHECKSUM_FILE_REF0: "{{.CHECKSUM_FILE}}.ref0"
+      CHECKSUM_FILE_REF1: "{{.CHECKSUM_FILE}}.ref1"
+      FILE_0: "{{.SRC_DIR}}/0.txt"
+      FILE_1: "{{.SRC_DIR}}/1.txt"
+    cmds:
+      - task: "checksum-test-init"
+        vars:
+          OUTPUT_DIR: "{{.OUTPUT_DIR}}"
+      - task: "create-dir-with-checksum"
+        vars:
+          CHECKSUM_FILE: "{{.CHECKSUM_FILE}}"
+          FILE_PATH: "{{.FILE_0}}"
+      - "cp '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF0}}'"
+
+      - "cat '{{.CHECKSUM_FILE}}' > '{{.FILE_0}}'"
+      - task: "checksum:compute"
+        vars:
+          CHECKSUM_FILE: "{{.CHECKSUM_FILE}}"
+          INCLUDE_PATTERNS: ["{{.SRC_DIR}}"]
+      - "cp '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF1}}'"
+
+      - task: "create-dir-with-checksum"
+        vars:
+          CHECKSUM_FILE: "{{.CHECKSUM_FILE}}"
+          FILE_PATH: "{{.FILE_1}}"
+
+      # Test create-dir-with-checksum didn't run the second time.
+      - "test -e '{{.FILE_0}}'"
+      - "test ! -e '{{.FILE_1}}'"
+      - "diff <(cat '{{.FILE_0}}') <(cat '{{.CHECKSUM_FILE_REF0}}')"
+      - "diff -q '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF1}}'"
+      - |-
+        if cmp --silent "{{.CHECKSUM_FILE}}" "{{.CHECKSUM_FILE_REF0}}"; then
+            echo "'{{.CHECKSUM_FILE}}' and '{{.CHECKSUM_FILE_REF0}}' should differ."
+            exit 1
+        fi
+
+  checksum-test-init:
+    internal: true
+    requires:
+      vars: ["OUTPUT_DIR"]
+    cmds:
+      - "rm -rf {{.OUTPUT_DIR}}*"
+      - "mkdir -p '{{.OUTPUT_DIR}}'"
+
+  create-dir-with-checksum:
+    internal: true
+    vars:
+      DIR: "{{dir .FILE_PATH}}"
+    requires:
+      vars: ["CHECKSUM_FILE", "FILE_PATH"]
+    sources: ["{{.TASKFILE}}"]
+    generates: ["{{.CHECKSUM_FILE}}"]
+    deps:
+      - task: "checksum:validate"
+        vars:
+          CHECKSUM_FILE: "{{.CHECKSUM_FILE}}"
+          INCLUDE_PATTERNS: ["{{.DIR}}"]
+    cmds:
+      - |-
+        rm -rf "{{.DIR}}"
+        mkdir -p "{{.DIR}}"
+        touch "{{.FILE_PATH}}"
+      - task: "checksum:compute"
+        vars:
+          CHECKSUM_FILE: "{{.CHECKSUM_FILE}}"
+          INCLUDE_PATTERNS: ["{{.DIR}}"]
diff --git a/taskfiles/tests.yaml b/taskfiles/tests.yaml
index 7c99a64..84626f9 100644
--- a/taskfiles/tests.yaml
+++ b/taskfiles/tests.yaml
@@ -2,6 +2,7 @@ version: "3"
 
 includes:
   boost: "boost/tests.yaml"
+  checksum: "checksum/tests.yaml"
   remote: "remote/tests.yaml"
   ystdlib-py: "ystdlib-py/tests.yaml"
 
@@ -10,6 +11,7 @@ tasks:
     internal: true
     cmds:
       - task: "boost"
+      - task: "checksum"
       - task: "remote"
       - task: "ystdlib-py"
 

From 9e41b40bd210b182ffd651845bffd8e2eada78c4 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Sat, 23 Aug 2025 00:48:14 -0400
Subject: [PATCH 03/97] feat(taskfile)!: Use checksum tasks to prevent
 unnecessary repetition of Boost tasks; Add checksum unit tests.

---
 exports/taskfiles/utils/boost.yaml    | 221 +++++++++++++++-----------
 exports/taskfiles/utils/checksum.yaml |  25 ++-
 taskfiles/boost/CMakeLists.txt        |   2 -
 taskfiles/boost/tests.yaml            |   7 +-
 4 files changed, 149 insertions(+), 106 deletions(-)

diff --git a/exports/taskfiles/utils/boost.yaml b/exports/taskfiles/utils/boost.yaml
index 33fec0a..d02b2b2 100644
--- a/exports/taskfiles/utils/boost.yaml
+++ b/exports/taskfiles/utils/boost.yaml
@@ -8,38 +8,41 @@ set: ["u", "pipefail"]
 shopt: ["globstar"]
 
 tasks:
-  # Generates `GENERATE_DIR` by copying `SOURCE_DIR` and then running boost's bootstrap step.
+  # Runs the Boost generate (bootstrap) step.
   #
-  # @param {string} SOURCE_DIR Project source directory.
-  # @param {string} GENERATE_DIR Directory in which to generate `b2` and the build configuration.
-  # @param {string} GENERATE_CHECKSUM_FILE Checksum file for `GENERATE_DIR`.
   # @param {string} INSTALL_PREFIX Path prefix of where the project should be installed.
+  # @param {string} SOURCE_DIR Project source directory.
   # @param {string[]} TARGETS Target libraries to build.
+  # @param {string} [CHECKSUM_FILE={{.SOURCE_DIR}}.md5] Checksum file path for `SOURCE_DIR`.
   # @param {string[]} [EXTRA_ARGS] Any additional arguments to pass to the generate command.
   generate:
     internal: true
+    label: "{{.TASK}}:{{.SOURCE_DIR}}"
     vars:
+      CHECKSUM_FILE: >-
+        {{default (printf "%s.md5" .SOURCE_DIR) .CHECKSUM_FILE}}
       EXTRA_ARGS:
         ref: "default (list) .EXTRA_ARGS"
+      SOURCE_SENTINEL_FILE: "{{.SOURCE_DIR}}/{{.TASK}}.sentinel"
     requires:
-      vars: ["SOURCE_DIR", "GENERATE_DIR", "GENERATE_CHECKSUM_FILE", "INSTALL_PREFIX", "TARGETS"]
+      vars:
+        - "INSTALL_PREFIX"
+        - "TARGETS"
+        - "SOURCE_DIR"
     sources:
-      - "{{.SOURCE_DIR}}/**/*"
+      - "{{.TASKFILE}}"
     generates:
-      - "{{.GENERATE_CHECKSUM_FILE}}"
+      - "{{.CHECKSUM_FILE}}"
+      - "{{.SOURCE_SENTINEL_FILE}}"
     deps:
       - task: "checksum:validate"
         vars:
-          CHECKSUM_FILE: "{{.GENERATE_CHECKSUM_FILE}}"
+          CHECKSUM_FILE: "{{.CHECKSUM_FILE}}"
           INCLUDE_PATTERNS:
-            - "{{.GENERATE_DIR}}"
+            - "{{.SOURCE_DIR}}"
     cmds:
       - >-
-        rm -rf "{{.GENERATE_DIR}}"
-      - >-
-        cp -R "{{.SOURCE_DIR}}" "{{.GENERATE_DIR}}"
-      - >-
-        pushd "{{.GENERATE_DIR}}";
+        pushd "{{.SOURCE_DIR}}";
         ./bootstrap.sh
         --prefix="{{.INSTALL_PREFIX}}"
         --exec-prefix="{{.INSTALL_PREFIX}}"
@@ -48,37 +51,79 @@ tasks:
           "{{.}}"
         {{- end}};
         popd
+      - "touch '{{.SOURCE_SENTINEL_FILE}}'"
       - task: "checksum:compute"
         vars:
-          CHECKSUM_FILE: "{{.GENERATE_CHECKSUM_FILE}}"
+          CHECKSUM_FILE: "{{.CHECKSUM_FILE}}"
           INCLUDE_PATTERNS:
-            - "{{.GENERATE_DIR}}"
+            - "{{.SOURCE_DIR}}"
 
-  # Runs boost's b2 build and install step, and creates a CMake settings file. The caller must have
-  # previously called `generate` on `SOURCE_DIR` (to produce the `GENERATE_DIR`) for this task to
-  # succeed.
+  # Runs Boost's b2 build and install step.
+  # Fails if the caller has not successfully called `generate` on `SOURCE_DIR`.
   #
-  # @param {string} GENERATE_DIR Directory containing boost's source and build files.
+  # Required parameters
   # @param {string} BUILD_DIR Directory in which to build boost.
   # @param {string} INSTALL_PREFIX Path prefix of where the project should be installed.
-  # @param {string[]} [EXTRA_ARGS] Any additional arguments to pass to the build command.
+  # @param {string} SOURCE_DIR Directory containing boost's source and build files.
+  #
+  # Checksum parameters
+  # @param {string} [BUILD_CHECKSUM_FILE={{.BUILD_DIR}}.md5] Checksum file path for `BUILD_DIR`.
+  # @param {string} [INSTALL_CHECKSUM_FILE={{.INSTALL_PREFIX}}.md5] Checksum file path for
+  # `INSTALL_PREFIX`
+  # @param {string} [SOURCE_CHECKSUM_FILE={{.SOURCE_DIR}}.md5] Checksum file path for `SOURCE_DIR`.
+  #
+  # Build command parameters
   # @param {int} [JOBS] The maximum number of concurrent processes to use when building. If
   # omitted, the b2 default number is used. Before 1.76.0, the number was 1. Since 1.76.0, the
   # default is the number of cores.
-  # @param {string} [CMAKE_SETTINGS_DIR] If set, the directory where the project's CMake settings
-  # file should be stored.
+  # @param {string[]} [EXTRA_ARGS] Any additional arguments to pass to the build command.
   build-and-install:
     internal: true
+    label: "{{.TASK}}:{{.BUILD_DIR}}-{{.INSTALL_PREFIX}}"
     vars:
+      # Checksum files
+      BUILD_CHECKSUM_FILE: >-
+        {{default (printf "%s.md5" .BUILD_DIR) .BUILD_CHECKSUM_FILE}}
+      INSTALL_CHECKSUM_FILE: >-
+        {{default (printf "%s.md5" .INSTALL_PREFIX) .INSTALL_CHECKSUM_FILE}}
+      SOURCE_CHECKSUM_FILE: >-
+        {{default (printf "%s.md5" .SOURCE_DIR) .SOURCE_CHECKSUM_FILE}}
+
       EXTRA_ARGS:
         ref: "default (list) .EXTRA_ARGS"
-      JOBS: >-
-        {{default "" .JOBS}}
+      SOURCE_SENTINEL_FILE: "{{.SOURCE_DIR}}/{{.TASK}}.sentinel"
     requires:
-      vars: ["GENERATE_DIR", "BUILD_DIR", "INSTALL_PREFIX"]
+      vars:
+        - "BUILD_DIR"
+        - "INSTALL_PREFIX"
+        - "SOURCE_DIR"
+    sources:
+      - "{{.TASKFILE}}"
+    generates:
+      - "{{.BUILD_CHECKSUM_FILE}}"
+      - "{{.INSTALL_CHECKSUM_FILE}}"
+      - "{{.SOURCE_CHECKSUM_FILE}}"
+      - "{{.SOURCE_SENTINEL_FILE}}"
+    deps:
+      - task: "checksum:validate"
+        vars:
+          CHECKSUM_FILE: "{{.BUILD_CHECKSUM_FILE}}"
+          INCLUDE_PATTERNS:
+            - "{{.BUILD_DIR}}"
+      - task: "checksum:validate"
+        vars:
+          CHECKSUM_FILE: "{{.INSTALL_CHECKSUM_FILE}}"
+          INCLUDE_PATTERNS:
+            - "{{.INSTALL_PREFIX}}"
+      - task: "checksum:validate"
+        vars:
+          CHECKSUM_FILE: "{{.SOURCE_CHECKSUM_FILE}}"
+          INCLUDE_PATTERNS:
+            - "{{.SOURCE_DIR}}"
+          FAIL: "true"
     cmds:
       - >-
-        pushd "{{.GENERATE_DIR}}";
+        pushd "{{.SOURCE_DIR}}";
         ./b2
         install
         --build-dir="{{.BUILD_DIR}}"
@@ -89,102 +134,90 @@ tasks:
           "-j{{.JOBS}}"
         {{- end}};
         popd;
-      - >-
-        {{- if .CMAKE_SETTINGS_DIR}}
-          echo "set(Boost_ROOT
-            \"{{.INSTALL_PREFIX}}\"
-            CACHE PATH
-            \"Package root for Boost.\"
-          )" >> "{{.CMAKE_SETTINGS_DIR}}/Boost.cmake"
-        {{- end}}
+      - "touch '{{.SOURCE_SENTINEL_FILE}}'"
+      - task: "checksum:compute"
+        vars:
+          CHECKSUM_FILE: "{{.BUILD_CHECKSUM_FILE}}"
+          INCLUDE_PATTERNS:
+            - "{{.BUILD_DIR}}"
+      - task: "checksum:compute"
+        vars:
+          CHECKSUM_FILE: "{{.INSTALL_CHECKSUM_FILE}}"
+          INCLUDE_PATTERNS:
+            - "{{.INSTALL_PREFIX}}"
+      - task: "checksum:compute"
+        vars:
+          CHECKSUM_FILE: "{{.SOURCE_CHECKSUM_FILE}}"
+          INCLUDE_PATTERNS:
+            - "{{.SOURCE_DIR}}"
 
-  # Downloads boost from `URL` and installs boost.
+  # Downloads Boost from `URL` and then generates, builds, and installs Boost inside `WORK_DIR`. If
+  # `CMAKE_SETTINGS_DIR` is set, a settings file will be created in that directory, containing a
+  # `Boost_ROOT` CMake variable that points to `INSTALL_PREFIX`.
   #
   # General parameters
-  # @param {string} [WORK_DIR={{.ROOT_DIR}}] Base directory in which to store the source, generate,
-  # build, and install directories.
-  # @param {string} [SOURCE_DIR={{.WORK_DIR}}/boost-src] Directory in which to extract the tar
-  # file.
-  #
-  # Download parameters
-  # @param {string} FILE_SHA256 Content hash to verify the downloaded tar file against.
-  # @param {string} URL
+  # @param {string} TAR_SHA256 Content hash to verify the downloaded tar file against.
+  # @param {string} TAR_URL URL of the tar file to download.
+  # @param {string} WORK_DIR Directory in which to store the source, build, and install directories.
+  # @param {string} [CMAKE_SETTINGS_DIR] If set, the directory where the project's CMake settings
+  # file should be stored.
   #
-  # Boost generate parameters
-  # @param {string} [GENERATE_DIR={{.WORK_DIR}}/boost-generate] Directory in which to generate the
-  # project build files.
-  # @param {string} [GENERATE_CHECKSUM_FILE={{.WORK_DIR}}/boost-generate.md5] Checksum file for the
-  # generate directory.
-  # @param {string} [INSTALL_PREFIX={{.WORK_DIR}}/boost-install] Path prefix of where the project
-  # should be installed.
-  # @param {string[]} [TARGETS] Target libraries to build.
+  # Boost parameters
+  # @param {string[]} [BUILD_AND_INSTALL_ARGS] Any additional arguments to pass to boost's build and
+  # install command.
   # @param {string[]} [GENERATE_ARGS] Any additional arguments to pass to the generate command.
-  #
-  # Boost build-and-install parameters
-  # @param {string} [BUILD_DIR={{.WORK_DIR}}/boost-build] Directory in which to build the project.
   # @param {int} [JOBS] The maximum number of concurrent processes to use when building. If
   # omitted, the b2 default number is used. Before 1.76.0, the number was 1. Since 1.76.0, the
   # default is the number of cores.
-  # @param {string[]} [BUILD_AND_INSTALL_ARGS] Any additional arguments to pass to boost's build
-  # and install command.
-  # @param {string} [CMAKE_SETTINGS_DIR] If set, the directory where the project's CMake settings
-  # file should be stored.
+  # @param {string[]} [TARGETS] Target libraries to build.
   download-and-install:
     internal: true
-    label: "{{.TASK}}:{{.URL}}-{{.INSTALL_PREFIX}}"
+    label: "{{.TASK}}:{{.URL}}-{{.WORK_DIR}}"
     vars:
-      # General parameters
-      WORK_DIR: >-
-        {{default .ROOT_DIR .WORK_DIR}}
-      SOURCE_DIR: >-
-        {{default (printf "%s/boost-src" .WORK_DIR) .SOURCE_DIR}}
-
-      # Boost generate parameters
-      GENERATE_DIR: >-
-        {{default (printf "%s/boost-generate" .WORK_DIR) .GENERATE_DIR}}
-      GENERATE_CHECKSUM_FILE: >-
-        {{default (printf "%s/boost-generate.md5" .WORK_DIR) .GENERATE_CHECKSUM_FILE}}
-      INSTALL_PREFIX: >-
-        {{default (printf "%s/boost-install" .WORK_DIR) .INSTALL_PREFIX}}
-      TARGETS:
-        ref: "default (list) .TARGETS"
-      GENERATE_ARGS:
-        ref: "default (list) .GENERATE_ARGS"
+      # Directory parameters
+      BUILD_DIR: "{{.WORK_DIR}}/boost-build"
+      INSTALL_PREFIX: "{{.WORK_DIR}}/boost-install"
+      SOURCE_DIR: "{{.WORK_DIR}}/boost-src"
 
-      # Boost build-and-install parameters
-      BUILD_DIR: >-
-        {{default (printf "%s/boost-build" .WORK_DIR) .BUILD_DIR}}
-      BUILD_AND_INSTALL_ARGS:
-        ref: "default (list) .BUILD_AND_INSTALL_ARGS"
-      JOBS: >-
-        {{default "" .JOBS}}
-      CMAKE_SETTINGS_DIR: >-
-        {{default "" .CMAKE_SETTINGS_DIR}}
+      # Checksum parameters
+      BUILD_AND_INSTALL_CHECKSUM_FILE: "{{.WORK_DIR}}/boost-build-install.md5"
+      SOURCE_CHECKSUM_FILE: "{{.SOURCE_DIR}}.md5"
     requires:
-      vars: ["FILE_SHA256", "URL"]
+      vars:
+        - "TAR_SHA256"
+        - "TAR_URL"
+        - "WORK_DIR"
     deps:
       - task: "remote:download-and-extract-tar"
         vars:
-          FILE_SHA256: "{{.FILE_SHA256}}"
+          FILE_SHA256: "{{.TAR_SHA256}}"
           OUTPUT_DIR: "{{.SOURCE_DIR}}"
-          URL: "{{.URL}}"
+          URL: "{{.TAR_URL}}"
     cmds:
       - task: "generate"
         vars:
-          SOURCE_DIR: "{{.SOURCE_DIR}}"
-          GENERATE_DIR: "{{.GENERATE_DIR}}"
-          GENERATE_CHECKSUM_FILE: "{{.GENERATE_CHECKSUM_FILE}}"
+          CHECKSUM_FILE: "{{.CHECKSUM_FILE}}"
           INSTALL_PREFIX: "{{.INSTALL_PREFIX}}"
+          SOURCE_DIR: "{{.SOURCE_DIR}}"
           TARGETS:
             ref: ".TARGETS"
           EXTRA_ARGS:
             ref: ".GENERATE_ARGS"
       - task: "build-and-install"
         vars:
-          GENERATE_DIR: "{{.GENERATE_DIR}}"
+          BUILD_AND_INSTALL_CHECKSUM_FILE: "{{.BUILD_AND_INSTALL_CHECKSUM_FILE}}"
           BUILD_DIR: "{{.BUILD_DIR}}"
           INSTALL_PREFIX: "{{.INSTALL_PREFIX}}"
+          SOURCE_CHECKSUM_FILE: "{{.SOURCE_CHECKSUM_FILE}}"
+          SOURCE_DIR: "{{.SOURCE_DIR}}"
           EXTRA_ARGS:
             ref: ".BUILD_AND_INSTALL_ARGS"
           JOBS: "{{.JOBS}}"
-          CMAKE_SETTINGS_DIR: "{{.CMAKE_SETTINGS_DIR}}"
+      - >-
+        {{- if .CMAKE_SETTINGS_DIR}}
+          echo "set(Boost_ROOT
+            \"{{.INSTALL_PREFIX}}\"
+            CACHE PATH
+            \"Package root for Boost.\"
+          )" > "{{.CMAKE_SETTINGS_DIR}}/Boost.cmake"
+        {{- end}}
diff --git a/exports/taskfiles/utils/checksum.yaml b/exports/taskfiles/utils/checksum.yaml
index e9b5ec7..0641087 100644
--- a/exports/taskfiles/utils/checksum.yaml
+++ b/exports/taskfiles/utils/checksum.yaml
@@ -46,20 +46,29 @@ tasks:
     # Ignore errors so that dependent tasks don't fail
     ignore_error: true
 
+  # Validates the checksum of the given path include patterns matches the checksum in the given
+  # file. If `FAIL` is set to "true" the task will fail, otherwise the checksum file is deleted.
+  #
   # @param {string} CHECKSUM_FILE
   # @param {string[]} INCLUDE_PATTERNS Path wildcard patterns to validate the checksum for.
   # @param {string[]} [EXCLUDE_PATTERNS] Path wildcard patterns, relative to any `INCLUDE_PATTERNS`,
   # to exclude from the checksum.
+  # @param {string} [FAIL="false"] If set to "true" the task fails.
   validate:
-    desc: "Validates the checksum of the given directory matches the checksum in the given file, or
-    deletes the checksum file otherwise."
     internal: true
     label: "{{.TASK}}-{{.CHECKSUM_FILE}}"
-    silent: true
     vars:
+      FAIL: >-
+        {{- if (eq "true" .FAIL) -}}
+          true
+        {{- else}}
+          false
+        {{- end}}
       TMP_CHECKSUM_FILE: "{{.CHECKSUM_FILE}}.tmp"
     requires:
-      vars: ["CHECKSUM_FILE", "INCLUDE_PATTERNS"]
+      vars:
+        - "CHECKSUM_FILE"
+        - "INCLUDE_PATTERNS"
     cmds:
       - task: "compute"
         vars:
@@ -69,7 +78,6 @@ tasks:
             ref: "default (list) .EXCLUDE_PATTERNS"
           CHECKSUM_FILE: "{{.TMP_CHECKSUM_FILE}}"
       - defer: "rm -f '{{.TMP_CHECKSUM_FILE}}'"
-      # Check that all paths exist and the checksum matches; otherwise delete the checksum file.
       - |-
         (
           {{- range .INCLUDE_PATTERNS}}
@@ -78,4 +86,9 @@ tasks:
           done
           {{- end}}
           diff -q "{{.TMP_CHECKSUM_FILE}}" "{{.CHECKSUM_FILE}}" 2> /dev/null
-        ) || rm -f "{{.CHECKSUM_FILE}}"
+        ) \
+        {{- if eq "true" .FAIL}}
+          || false
+        {{- else}}
+          || rm -f "{{.CHECKSUM_FILE}}"
+        {{- end}}
diff --git a/taskfiles/boost/CMakeLists.txt b/taskfiles/boost/CMakeLists.txt
index fd3e1aa..1480ba4 100644
--- a/taskfiles/boost/CMakeLists.txt
+++ b/taskfiles/boost/CMakeLists.txt
@@ -30,7 +30,6 @@ find_package(
         process
         program_options
         regex
-        system
         url
 )
 if(Boost_FOUND)
@@ -49,6 +48,5 @@ target_link_libraries(
         Boost::process
         Boost::program_options
         Boost::regex
-        Boost::system
         Boost::url
 )
diff --git a/taskfiles/boost/tests.yaml b/taskfiles/boost/tests.yaml
index f6544bc..85570c1 100644
--- a/taskfiles/boost/tests.yaml
+++ b/taskfiles/boost/tests.yaml
@@ -48,9 +48,9 @@ tasks:
       - task: "utils:boost:download-and-install"
         vars:
           WORK_DIR: "{{.G_BOOST_DEPS_DIR}}/boost"
-          FILE_SHA256: "2128a4c96862b5c0970c1e34d76b1d57e4a1016b80df85ad39667f30b1deba26"
-          URL: "https://github.com/boostorg/boost/releases/download/boost-1.86.0/\
-            boost-1.86.0-b2-nodocs.tar.gz"
+          TAR_SHA256: "aa25e7b9c227c21abb8a681efd4fe6e54823815ffc12394c9339de998eb503fb"
+          TAR_URL: "https://github.com/boostorg/boost/releases/download/boost-1.89.0/\
+            boost-1.89.0-b2-nodocs.tar.gz"
           CMAKE_SETTINGS_DIR: "{{.G_BOOST_DEPS_CMAKE_SETTINGS_DIR}}"
           TARGETS:
             - "filesystem"
@@ -59,7 +59,6 @@ tasks:
             - "process"
             - "program_options"
             - "regex"
-            - "system"
             - "url"
 
   run-boost-test:

From 3329f52521b88e6c9d87f2ed492c942f1f8897ec Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Sat, 23 Aug 2025 00:58:56 -0400
Subject: [PATCH 04/97] Follow yaml guidelines.

---
 exports/taskfiles/utils/boost.yaml | 30 ++++++++++--------------------
 1 file changed, 10 insertions(+), 20 deletions(-)

diff --git a/exports/taskfiles/utils/boost.yaml b/exports/taskfiles/utils/boost.yaml
index d02b2b2..65e03d0 100644
--- a/exports/taskfiles/utils/boost.yaml
+++ b/exports/taskfiles/utils/boost.yaml
@@ -29,8 +29,7 @@ tasks:
         - "INSTALL_PREFIX"
         - "TARGETS"
         - "SOURCE_DIR"
-    sources:
-      - "{{.TASKFILE}}"
+    sources: ["{{.TASKFILE}}"]
     generates:
       - "{{.CHECKSUM_FILE}}"
       - "{{.SOURCE_SENTINEL_FILE}}"
@@ -38,8 +37,7 @@ tasks:
       - task: "checksum:validate"
         vars:
           CHECKSUM_FILE: "{{.CHECKSUM_FILE}}"
-          INCLUDE_PATTERNS:
-            - "{{.SOURCE_DIR}}"
+          INCLUDE_PATTERNS: ["{{.SOURCE_DIR}}"]
     cmds:
       - >-
         pushd "{{.SOURCE_DIR}}";
@@ -55,8 +53,7 @@ tasks:
       - task: "checksum:compute"
         vars:
           CHECKSUM_FILE: "{{.CHECKSUM_FILE}}"
-          INCLUDE_PATTERNS:
-            - "{{.SOURCE_DIR}}"
+          INCLUDE_PATTERNS: ["{{.SOURCE_DIR}}"]
 
   # Runs Boost's b2 build and install step.
   # Fails if the caller has not successfully called `generate` on `SOURCE_DIR`.
@@ -97,8 +94,7 @@ tasks:
         - "BUILD_DIR"
         - "INSTALL_PREFIX"
         - "SOURCE_DIR"
-    sources:
-      - "{{.TASKFILE}}"
+    sources: ["{{.TASKFILE}}"]
     generates:
       - "{{.BUILD_CHECKSUM_FILE}}"
       - "{{.INSTALL_CHECKSUM_FILE}}"
@@ -108,18 +104,15 @@ tasks:
       - task: "checksum:validate"
         vars:
           CHECKSUM_FILE: "{{.BUILD_CHECKSUM_FILE}}"
-          INCLUDE_PATTERNS:
-            - "{{.BUILD_DIR}}"
+          INCLUDE_PATTERNS: ["{{.BUILD_DIR}}"]
       - task: "checksum:validate"
         vars:
           CHECKSUM_FILE: "{{.INSTALL_CHECKSUM_FILE}}"
-          INCLUDE_PATTERNS:
-            - "{{.INSTALL_PREFIX}}"
+          INCLUDE_PATTERNS: ["{{.INSTALL_PREFIX}}"]
       - task: "checksum:validate"
         vars:
           CHECKSUM_FILE: "{{.SOURCE_CHECKSUM_FILE}}"
-          INCLUDE_PATTERNS:
-            - "{{.SOURCE_DIR}}"
+          INCLUDE_PATTERNS: ["{{.SOURCE_DIR}}"]
           FAIL: "true"
     cmds:
       - >-
@@ -138,18 +131,15 @@ tasks:
       - task: "checksum:compute"
         vars:
           CHECKSUM_FILE: "{{.BUILD_CHECKSUM_FILE}}"
-          INCLUDE_PATTERNS:
-            - "{{.BUILD_DIR}}"
+          INCLUDE_PATTERNS: ["{{.BUILD_DIR}}"]
       - task: "checksum:compute"
         vars:
           CHECKSUM_FILE: "{{.INSTALL_CHECKSUM_FILE}}"
-          INCLUDE_PATTERNS:
-            - "{{.INSTALL_PREFIX}}"
+          INCLUDE_PATTERNS: ["{{.INSTALL_PREFIX}}"]
       - task: "checksum:compute"
         vars:
           CHECKSUM_FILE: "{{.SOURCE_CHECKSUM_FILE}}"
-          INCLUDE_PATTERNS:
-            - "{{.SOURCE_DIR}}"
+          INCLUDE_PATTERNS: ["{{.SOURCE_DIR}}"]
 
   # Downloads Boost from `URL` and then generates, builds, and installs Boost inside `WORK_DIR`. If
   # `CMAKE_SETTINGS_DIR` is set, a settings file will be created in that directory, containing a

From 5572a89c57a0983e6b0ebe0adba24d42936788d2 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Sat, 23 Aug 2025 01:19:57 -0400
Subject: [PATCH 05/97] Fix yaml lint.

---
 taskfiles/checksum/tests.yaml | 1 -
 1 file changed, 1 deletion(-)

diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
index 542d701..ebe3245 100644
--- a/taskfiles/checksum/tests.yaml
+++ b/taskfiles/checksum/tests.yaml
@@ -44,7 +44,6 @@ tasks:
             exit 1
         fi
 
-
   checksum-test-skip:
     vars:
       OUTPUT_DIR: "{{.G_OUTPUT_DIR}}/{{.TASK | replace \":\" \"#\"}}"

From c8d706c7c95bb1ad50c9dfd21c03f48b05629223 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Sat, 23 Aug 2025 01:20:13 -0400
Subject: [PATCH 06/97] Fix boost 1.89 header change.

---
 taskfiles/boost/test_boost.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/taskfiles/boost/test_boost.cpp b/taskfiles/boost/test_boost.cpp
index 61d9007..7f9cf9f 100644
--- a/taskfiles/boost/test_boost.cpp
+++ b/taskfiles/boost/test_boost.cpp
@@ -11,7 +11,7 @@
 #include <boost/filesystem.hpp>
 #include <boost/iostreams/device/back_inserter.hpp>
 #include <boost/iostreams/filtering_stream.hpp>
-#include <boost/process/v2.hpp>
+#include <boost/process/v2/process.hpp>
 #include <boost/process/v2/stdio.hpp>
 #include <boost/program_options.hpp>
 #include <boost/regex.hpp>

From aca9e63182143192e9d1f198b0653ed3de493bc2 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Sun, 24 Aug 2025 10:22:11 -0400
Subject: [PATCH 07/97] Try diff?

---
 taskfiles/checksum/tests.yaml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
index ebe3245..fcef9a0 100644
--- a/taskfiles/checksum/tests.yaml
+++ b/taskfiles/checksum/tests.yaml
@@ -39,7 +39,7 @@ tasks:
       - "test ! -e '{{.FILE_0}}'"
       - "test -e '{{.FILE_1}}'"
       - |-
-        if cmp --silent "{{.CHECKSUM_FILE}}" "{{.CHECKSUM_FILE_REF}}"; then
+        if diff -q "{{.CHECKSUM_FILE}}" "{{.CHECKSUM_FILE_REF}}"; then
             echo "'{{.CHECKSUM_FILE}}' and '{{.CHECKSUM_FILE_REF}}' should differ."
             exit 1
         fi
@@ -110,7 +110,7 @@ tasks:
       - "diff <(cat '{{.FILE_0}}') <(cat '{{.CHECKSUM_FILE_REF0}}')"
       - "diff -q '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF1}}'"
       - |-
-        if cmp --silent "{{.CHECKSUM_FILE}}" "{{.CHECKSUM_FILE_REF0}}"; then
+        if diff -q "{{.CHECKSUM_FILE}}" "{{.CHECKSUM_FILE_REF0}}"; then
             echo "'{{.CHECKSUM_FILE}}' and '{{.CHECKSUM_FILE_REF0}}' should differ."
             exit 1
         fi

From aef078666bc4cf88e15d5af68fb0ec9dd772c95e Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Sun, 24 Aug 2025 10:48:25 -0400
Subject: [PATCH 08/97] Full switch to cmp.

---
 taskfiles/checksum/tests.yaml | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
index fcef9a0..a58eb78 100644
--- a/taskfiles/checksum/tests.yaml
+++ b/taskfiles/checksum/tests.yaml
@@ -39,9 +39,9 @@ tasks:
       - "test ! -e '{{.FILE_0}}'"
       - "test -e '{{.FILE_1}}'"
       - |-
-        if diff -q "{{.CHECKSUM_FILE}}" "{{.CHECKSUM_FILE_REF}}"; then
-            echo "'{{.CHECKSUM_FILE}}' and '{{.CHECKSUM_FILE_REF}}' should differ."
-            exit 1
+        if cmp --silent "{{.CHECKSUM_FILE}}" "{{.CHECKSUM_FILE_REF}}"; then
+          echo "'{{.CHECKSUM_FILE}}' and '{{.CHECKSUM_FILE_REF}}' should differ."
+          exit 1
         fi
 
   checksum-test-skip:
@@ -70,7 +70,7 @@ tasks:
       # Test create-dir-with-checksum didn't run the second time.
       - "test -e '{{.FILE_0}}'"
       - "test ! -e '{{.FILE_1}}'"
-      - "diff '{{.CHECKSUM_MOD_TS}}' <(date -r '{{.CHECKSUM_FILE}}')"
+      - "cmp --silent '{{.CHECKSUM_MOD_TS}}' <(date -r '{{.CHECKSUM_FILE}}')"
 
   checksum-test-update:
     vars:
@@ -107,12 +107,12 @@ tasks:
       # Test create-dir-with-checksum didn't run the second time.
       - "test -e '{{.FILE_0}}'"
       - "test ! -e '{{.FILE_1}}'"
-      - "diff <(cat '{{.FILE_0}}') <(cat '{{.CHECKSUM_FILE_REF0}}')"
-      - "diff -q '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF1}}'"
+      - "cmp --silent  '{{.FILE_0}}'  '{{.CHECKSUM_FILE_REF0}}'"
+      - "cmp --silent '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF1}}'"
       - |-
-        if diff -q "{{.CHECKSUM_FILE}}" "{{.CHECKSUM_FILE_REF0}}"; then
-            echo "'{{.CHECKSUM_FILE}}' and '{{.CHECKSUM_FILE_REF0}}' should differ."
-            exit 1
+        if cmp --silent "{{.CHECKSUM_FILE}}" "{{.CHECKSUM_FILE_REF0}}"; then
+          echo "'{{.CHECKSUM_FILE}}' and '{{.CHECKSUM_FILE_REF0}}' should differ."
+          exit 1
         fi
 
   checksum-test-init:

From b0ea5bc48263528ebadd3df63da8a27e130b8427 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Sun, 24 Aug 2025 10:48:39 -0400
Subject: [PATCH 09/97] Debug logs.

---
 .github/workflows/unit-tests.yaml | 2 +-
 taskfiles/checksum/tests.yaml     | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/unit-tests.yaml b/.github/workflows/unit-tests.yaml
index cce541c..a74b510 100644
--- a/.github/workflows/unit-tests.yaml
+++ b/.github/workflows/unit-tests.yaml
@@ -39,4 +39,4 @@ jobs:
         run: "curl --fail --location --silent --show-error https://astral.sh/uv/install.sh | sh"
 
       - name: "Run unit tests"
-        run: "task test"
+        run: "task test -v"
diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
index a58eb78..28a01be 100644
--- a/taskfiles/checksum/tests.yaml
+++ b/taskfiles/checksum/tests.yaml
@@ -22,6 +22,8 @@ tasks:
       FILE_0: "{{.SRC_DIR}}/0.txt"
       FILE_1: "{{.SRC_DIR}}/1.txt"
     cmds:
+      - defer: |-
+          echo "[debug] rerun {{.EXIT_CODE}}"
       - task: "checksum-test-init"
         vars:
           OUTPUT_DIR: "{{.OUTPUT_DIR}}"

From 3d661082b6e70c64b988c911e6b289c91544a0ea Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Sun, 24 Aug 2025 10:58:29 -0400
Subject: [PATCH 10/97] Resolve some rabbit coments.

---
 exports/taskfiles/utils/boost.yaml | 6 +++---
 taskfiles/boost/test_boost.cpp     | 2 +-
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/exports/taskfiles/utils/boost.yaml b/exports/taskfiles/utils/boost.yaml
index 65e03d0..0569eec 100644
--- a/exports/taskfiles/utils/boost.yaml
+++ b/exports/taskfiles/utils/boost.yaml
@@ -141,8 +141,8 @@ tasks:
           CHECKSUM_FILE: "{{.SOURCE_CHECKSUM_FILE}}"
           INCLUDE_PATTERNS: ["{{.SOURCE_DIR}}"]
 
-  # Downloads Boost from `URL` and then generates, builds, and installs Boost inside `WORK_DIR`. If
-  # `CMAKE_SETTINGS_DIR` is set, a settings file will be created in that directory, containing a
+  # Downloads Boost from `TAR_URL` and then generates, builds, and installs Boost inside `WORK_DIR`.
+  # If `CMAKE_SETTINGS_DIR` is set, a settings file will be created in that directory, containing a
   # `Boost_ROOT` CMake variable that points to `INSTALL_PREFIX`.
   #
   # General parameters
@@ -162,7 +162,7 @@ tasks:
   # @param {string[]} [TARGETS] Target libraries to build.
   download-and-install:
     internal: true
-    label: "{{.TASK}}:{{.URL}}-{{.WORK_DIR}}"
+    label: "{{.TASK}}:{{.TAR_URL}}-{{.WORK_DIR}}"
     vars:
       # Directory parameters
       BUILD_DIR: "{{.WORK_DIR}}/boost-build"
diff --git a/taskfiles/boost/test_boost.cpp b/taskfiles/boost/test_boost.cpp
index 7f9cf9f..6f0137a 100644
--- a/taskfiles/boost/test_boost.cpp
+++ b/taskfiles/boost/test_boost.cpp
@@ -103,7 +103,7 @@ auto test_process() -> bool {
                 io_context,
                 boost::dll::program_location(),
                 {"--help"},
-                boost::process::process_stdio{.in{}, .out{nullptr}, .err{nullptr}}
+                boost::process::v2::process_stdio{.in{}, .out{nullptr}, .err{nullptr}}
         };
         std::future<int> result = process.async_wait(boost::asio::use_future);
         io_context.run();

From 6af0c396175f3ef3de66ba30c681ec901e195d8b Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Sun, 24 Aug 2025 11:07:59 -0400
Subject: [PATCH 11/97] debugging CI

---
 .github/workflows/unit-tests.yaml | 2 +-
 taskfiles/checksum/tests.yaml     | 4 +++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/unit-tests.yaml b/.github/workflows/unit-tests.yaml
index a74b510..cce541c 100644
--- a/.github/workflows/unit-tests.yaml
+++ b/.github/workflows/unit-tests.yaml
@@ -39,4 +39,4 @@ jobs:
         run: "curl --fail --location --silent --show-error https://astral.sh/uv/install.sh | sh"
 
       - name: "Run unit tests"
-        run: "task test -v"
+        run: "task test"
diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
index 28a01be..c8ffae4 100644
--- a/taskfiles/checksum/tests.yaml
+++ b/taskfiles/checksum/tests.yaml
@@ -43,8 +43,10 @@ tasks:
       - |-
         if cmp --silent "{{.CHECKSUM_FILE}}" "{{.CHECKSUM_FILE_REF}}"; then
           echo "'{{.CHECKSUM_FILE}}' and '{{.CHECKSUM_FILE_REF}}' should differ."
-          exit 1
+        else
+          echo "[debug] cmp failed successfully."
         fi
+      - "echo '[debug] rerun finished.'"
 
   checksum-test-skip:
     vars:

From ea102c7577902fbc1db2a139c96ea428ef4a0eb9 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Sun, 24 Aug 2025 11:14:11 -0400
Subject: [PATCH 12/97] Resolve more rabbit coments.

---
 exports/taskfiles/utils/boost.yaml | 7 -------
 taskfiles/checksum/tests.yaml      | 2 +-
 2 files changed, 1 insertion(+), 8 deletions(-)

diff --git a/exports/taskfiles/utils/boost.yaml b/exports/taskfiles/utils/boost.yaml
index 0569eec..283fbbb 100644
--- a/exports/taskfiles/utils/boost.yaml
+++ b/exports/taskfiles/utils/boost.yaml
@@ -168,10 +168,6 @@ tasks:
       BUILD_DIR: "{{.WORK_DIR}}/boost-build"
       INSTALL_PREFIX: "{{.WORK_DIR}}/boost-install"
       SOURCE_DIR: "{{.WORK_DIR}}/boost-src"
-
-      # Checksum parameters
-      BUILD_AND_INSTALL_CHECKSUM_FILE: "{{.WORK_DIR}}/boost-build-install.md5"
-      SOURCE_CHECKSUM_FILE: "{{.SOURCE_DIR}}.md5"
     requires:
       vars:
         - "TAR_SHA256"
@@ -186,7 +182,6 @@ tasks:
     cmds:
       - task: "generate"
         vars:
-          CHECKSUM_FILE: "{{.CHECKSUM_FILE}}"
           INSTALL_PREFIX: "{{.INSTALL_PREFIX}}"
           SOURCE_DIR: "{{.SOURCE_DIR}}"
           TARGETS:
@@ -195,10 +190,8 @@ tasks:
             ref: ".GENERATE_ARGS"
       - task: "build-and-install"
         vars:
-          BUILD_AND_INSTALL_CHECKSUM_FILE: "{{.BUILD_AND_INSTALL_CHECKSUM_FILE}}"
           BUILD_DIR: "{{.BUILD_DIR}}"
           INSTALL_PREFIX: "{{.INSTALL_PREFIX}}"
-          SOURCE_CHECKSUM_FILE: "{{.SOURCE_CHECKSUM_FILE}}"
           SOURCE_DIR: "{{.SOURCE_DIR}}"
           EXTRA_ARGS:
             ref: ".BUILD_AND_INSTALL_ARGS"
diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
index c8ffae4..dd033da 100644
--- a/taskfiles/checksum/tests.yaml
+++ b/taskfiles/checksum/tests.yaml
@@ -124,7 +124,7 @@ tasks:
     requires:
       vars: ["OUTPUT_DIR"]
     cmds:
-      - "rm -rf {{.OUTPUT_DIR}}*"
+      - "rm -rf '{{.OUTPUT_DIR}}'"
       - "mkdir -p '{{.OUTPUT_DIR}}'"
 
   create-dir-with-checksum:

From 7c9701d568efc804dde33c6fe9b35ac4ecd36930 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Sun, 24 Aug 2025 11:47:24 -0400
Subject: [PATCH 13/97] Switch to oneliner.

---
 taskfiles/checksum/tests.yaml | 16 ++--------------
 1 file changed, 2 insertions(+), 14 deletions(-)

diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
index dd033da..838e0f0 100644
--- a/taskfiles/checksum/tests.yaml
+++ b/taskfiles/checksum/tests.yaml
@@ -22,8 +22,6 @@ tasks:
       FILE_0: "{{.SRC_DIR}}/0.txt"
       FILE_1: "{{.SRC_DIR}}/1.txt"
     cmds:
-      - defer: |-
-          echo "[debug] rerun {{.EXIT_CODE}}"
       - task: "checksum-test-init"
         vars:
           OUTPUT_DIR: "{{.OUTPUT_DIR}}"
@@ -40,13 +38,7 @@ tasks:
       # Test create-dir-with-checksum ran the second time.
       - "test ! -e '{{.FILE_0}}'"
       - "test -e '{{.FILE_1}}'"
-      - |-
-        if cmp --silent "{{.CHECKSUM_FILE}}" "{{.CHECKSUM_FILE_REF}}"; then
-          echo "'{{.CHECKSUM_FILE}}' and '{{.CHECKSUM_FILE_REF}}' should differ."
-        else
-          echo "[debug] cmp failed successfully."
-        fi
-      - "echo '[debug] rerun finished.'"
+      - "! cmp --silent '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}'"
 
   checksum-test-skip:
     vars:
@@ -113,11 +105,7 @@ tasks:
       - "test ! -e '{{.FILE_1}}'"
       - "cmp --silent  '{{.FILE_0}}'  '{{.CHECKSUM_FILE_REF0}}'"
       - "cmp --silent '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF1}}'"
-      - |-
-        if cmp --silent "{{.CHECKSUM_FILE}}" "{{.CHECKSUM_FILE_REF0}}"; then
-          echo "'{{.CHECKSUM_FILE}}' and '{{.CHECKSUM_FILE_REF0}}' should differ."
-          exit 1
-        fi
+      - "! cmp --silent '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF0}}'"
 
   checksum-test-init:
     internal: true

From a6f792228bc4502e9ef0da69e8022710da68e27d Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Sun, 24 Aug 2025 11:54:46 -0400
Subject: [PATCH 14/97] Make TARGETS required.

---
 exports/taskfiles/utils/boost.yaml | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/exports/taskfiles/utils/boost.yaml b/exports/taskfiles/utils/boost.yaml
index 283fbbb..fc100cf 100644
--- a/exports/taskfiles/utils/boost.yaml
+++ b/exports/taskfiles/utils/boost.yaml
@@ -153,13 +153,13 @@ tasks:
   # file should be stored.
   #
   # Boost parameters
+  # @param {string[]} TARGETS Target libraries to build.
   # @param {string[]} [BUILD_AND_INSTALL_ARGS] Any additional arguments to pass to boost's build and
   # install command.
   # @param {string[]} [GENERATE_ARGS] Any additional arguments to pass to the generate command.
   # @param {int} [JOBS] The maximum number of concurrent processes to use when building. If
   # omitted, the b2 default number is used. Before 1.76.0, the number was 1. Since 1.76.0, the
   # default is the number of cores.
-  # @param {string[]} [TARGETS] Target libraries to build.
   download-and-install:
     internal: true
     label: "{{.TASK}}:{{.TAR_URL}}-{{.WORK_DIR}}"
@@ -172,6 +172,7 @@ tasks:
       vars:
         - "TAR_SHA256"
         - "TAR_URL"
+        - "TARGETS"
         - "WORK_DIR"
     deps:
       - task: "remote:download-and-extract-tar"

From 9e3b9816e134679fddf52dfc5aba5c3193eeec07 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Sun, 24 Aug 2025 11:56:23 -0400
Subject: [PATCH 15/97] who knows

---
 .github/workflows/unit-tests.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/unit-tests.yaml b/.github/workflows/unit-tests.yaml
index cce541c..aabe8fa 100644
--- a/.github/workflows/unit-tests.yaml
+++ b/.github/workflows/unit-tests.yaml
@@ -39,4 +39,4 @@ jobs:
         run: "curl --fail --location --silent --show-error https://astral.sh/uv/install.sh | sh"
 
       - name: "Run unit tests"
-        run: "task test"
+        run: "task test --concurrency 1 --verbose"

From 67403973103a146415f9d0d4995b963d1d259855 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Sun, 24 Aug 2025 12:09:45 -0400
Subject: [PATCH 16/97] shell shock

---
 taskfiles/checksum/tests.yaml | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
index 838e0f0..3dc3f41 100644
--- a/taskfiles/checksum/tests.yaml
+++ b/taskfiles/checksum/tests.yaml
@@ -105,7 +105,8 @@ tasks:
       - "test ! -e '{{.FILE_1}}'"
       - "cmp --silent  '{{.FILE_0}}'  '{{.CHECKSUM_FILE_REF0}}'"
       - "cmp --silent '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF1}}'"
-      - "! cmp --silent '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF0}}'"
+      - "cat '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF0}}'"
+      - "! cmp '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF0}}'"
 
   checksum-test-init:
     internal: true

From b7849d94e00a0f397668a7cdb6e96dce7b8378eb Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Sun, 24 Aug 2025 12:16:02 -0400
Subject: [PATCH 17/97] Verbose testing.

---
 taskfiles/checksum/tests.yaml | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
index 3dc3f41..ef6d850 100644
--- a/taskfiles/checksum/tests.yaml
+++ b/taskfiles/checksum/tests.yaml
@@ -38,8 +38,22 @@ tasks:
       # Test create-dir-with-checksum ran the second time.
       - "test ! -e '{{.FILE_0}}'"
       - "test -e '{{.FILE_1}}'"
+
+      - defer: |-
+          echo "[debug] rerun {{.EXIT_CODE}}"
+      - "cat '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}'"
+      - |-
+        if cmp --silent "{{.CHECKSUM_FILE}}" "{{.CHECKSUM_FILE_REF}}"; then
+          echo "[debug] '{{.CHECKSUM_FILE}}' and '{{.CHECKSUM_FILE_REF}}' should differ."
+          exit 1
+        else
+          echo "[debug] '{{.CHECKSUM_FILE}}' and '{{.CHECKSUM_FILE_REF}}' match."
+        fi
+      - "[debug] rerun finished."
+
       - "! cmp --silent '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}'"
 
+
   checksum-test-skip:
     vars:
       OUTPUT_DIR: "{{.G_OUTPUT_DIR}}/{{.TASK | replace \":\" \"#\"}}"
@@ -105,8 +119,7 @@ tasks:
       - "test ! -e '{{.FILE_1}}'"
       - "cmp --silent  '{{.FILE_0}}'  '{{.CHECKSUM_FILE_REF0}}'"
       - "cmp --silent '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF1}}'"
-      - "cat '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF0}}'"
-      - "! cmp '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF0}}'"
+      - "! cmp --silent '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF0}}'"
 
   checksum-test-init:
     internal: true

From 3d82d191817f1fe8fe1ab1e7ee62d9266b7b82cc Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Sun, 24 Aug 2025 12:24:39 -0400
Subject: [PATCH 18/97] Fix logs.

---
 .github/workflows/unit-tests.yaml | 2 +-
 taskfiles/checksum/tests.yaml     | 6 +++---
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/.github/workflows/unit-tests.yaml b/.github/workflows/unit-tests.yaml
index aabe8fa..745a530 100644
--- a/.github/workflows/unit-tests.yaml
+++ b/.github/workflows/unit-tests.yaml
@@ -39,4 +39,4 @@ jobs:
         run: "curl --fail --location --silent --show-error https://astral.sh/uv/install.sh | sh"
 
       - name: "Run unit tests"
-        run: "task test --concurrency 1 --verbose"
+        run: "task test --verbose"
diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
index ef6d850..5ae79b0 100644
--- a/taskfiles/checksum/tests.yaml
+++ b/taskfiles/checksum/tests.yaml
@@ -40,16 +40,16 @@ tasks:
       - "test -e '{{.FILE_1}}'"
 
       - defer: |-
-          echo "[debug] rerun {{.EXIT_CODE}}"
+          echo "[debug] rerun exit code: {{.EXIT_CODE}}"
       - "cat '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}'"
       - |-
         if cmp --silent "{{.CHECKSUM_FILE}}" "{{.CHECKSUM_FILE_REF}}"; then
           echo "[debug] '{{.CHECKSUM_FILE}}' and '{{.CHECKSUM_FILE_REF}}' should differ."
           exit 1
         else
-          echo "[debug] '{{.CHECKSUM_FILE}}' and '{{.CHECKSUM_FILE_REF}}' match."
+          echo "[debug] '{{.CHECKSUM_FILE}}' and '{{.CHECKSUM_FILE_REF}}' differ!!"
         fi
-      - "[debug] rerun finished."
+      - "echo '[debug] rerun finished.'"
 
       - "! cmp --silent '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}'"
 

From 6930c6f8d33896ac58f5de134c108a80b2bf5292 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Sun, 24 Aug 2025 12:54:50 -0400
Subject: [PATCH 19/97] npm maybe

---
 .github/workflows/unit-tests.yaml | 5 +++--
 taskfiles/checksum/tests.yaml     | 1 -
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/.github/workflows/unit-tests.yaml b/.github/workflows/unit-tests.yaml
index 745a530..ec80d3e 100644
--- a/.github/workflows/unit-tests.yaml
+++ b/.github/workflows/unit-tests.yaml
@@ -32,11 +32,12 @@ jobs:
 
       - name: "Install task"
         shell: "bash"
-        run: "npm install -g @go-task/cli"
+        # run: "npm install -g @go-task/cli"
+        run:  "sh -c '$(curl --location https://taskfile.dev/install.sh)' -- -d"
 
       - name: "Install uv"
         shell: "bash"
         run: "curl --fail --location --silent --show-error https://astral.sh/uv/install.sh | sh"
 
       - name: "Run unit tests"
-        run: "task test --verbose"
+        run: "task test"
diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
index 5ae79b0..a87fd8b 100644
--- a/taskfiles/checksum/tests.yaml
+++ b/taskfiles/checksum/tests.yaml
@@ -53,7 +53,6 @@ tasks:
 
       - "! cmp --silent '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}'"
 
-
   checksum-test-skip:
     vars:
       OUTPUT_DIR: "{{.G_OUTPUT_DIR}}/{{.TASK | replace \":\" \"#\"}}"

From a3fedaa84194ca1e56425ff85a920060bc5d905d Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Sun, 24 Aug 2025 12:56:43 -0400
Subject: [PATCH 20/97] sigh task scripts

---
 .github/workflows/unit-tests.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/unit-tests.yaml b/.github/workflows/unit-tests.yaml
index ec80d3e..0264318 100644
--- a/.github/workflows/unit-tests.yaml
+++ b/.github/workflows/unit-tests.yaml
@@ -33,7 +33,7 @@ jobs:
       - name: "Install task"
         shell: "bash"
         # run: "npm install -g @go-task/cli"
-        run:  "sh -c '$(curl --location https://taskfile.dev/install.sh)' -- -d"
+        run: "curl --fail --location --silent --show-error https://taskfile.dev/install.sh | sh -- d"
 
       - name: "Install uv"
         shell: "bash"

From 51c0ee8eb5def1b64bfdfdf9200672c9cb10b0ff Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Sun, 24 Aug 2025 12:57:42 -0400
Subject: [PATCH 21/97] typo

---
 .github/workflows/unit-tests.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/unit-tests.yaml b/.github/workflows/unit-tests.yaml
index 0264318..f2252a4 100644
--- a/.github/workflows/unit-tests.yaml
+++ b/.github/workflows/unit-tests.yaml
@@ -33,7 +33,7 @@ jobs:
       - name: "Install task"
         shell: "bash"
         # run: "npm install -g @go-task/cli"
-        run: "curl --fail --location --silent --show-error https://taskfile.dev/install.sh | sh -- d"
+        run: "curl --fail --location --silent --show-error https://taskfile.dev/install.sh | sh -- -d"
 
       - name: "Install uv"
         shell: "bash"

From 77d6fea41209bf1c1e25fd10eed6e58148fef567 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Sun, 24 Aug 2025 13:14:29 -0400
Subject: [PATCH 22/97] syntax hard

---
 .github/workflows/unit-tests.yaml | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/unit-tests.yaml b/.github/workflows/unit-tests.yaml
index f2252a4..843b889 100644
--- a/.github/workflows/unit-tests.yaml
+++ b/.github/workflows/unit-tests.yaml
@@ -33,7 +33,8 @@ jobs:
       - name: "Install task"
         shell: "bash"
         # run: "npm install -g @go-task/cli"
-        run: "curl --fail --location --silent --show-error https://taskfile.dev/install.sh | sh -- -d"
+        run: >-
+          curl --fail --location --silent --show-error https://taskfile.dev/install.sh | sh -s -- -d
 
       - name: "Install uv"
         shell: "bash"

From 955d6bdfbe8bb60023caee8e9ec91f795ce15ddc Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Sun, 24 Aug 2025 13:16:45 -0400
Subject: [PATCH 23/97] not on path

---
 .github/workflows/unit-tests.yaml | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/unit-tests.yaml b/.github/workflows/unit-tests.yaml
index 843b889..2dd8506 100644
--- a/.github/workflows/unit-tests.yaml
+++ b/.github/workflows/unit-tests.yaml
@@ -34,7 +34,8 @@ jobs:
         shell: "bash"
         # run: "npm install -g @go-task/cli"
         run: >-
-          curl --fail --location --silent --show-error https://taskfile.dev/install.sh | sh -s -- -d
+          curl --fail --location --silent --show-error https://taskfile.dev/install.sh
+          | sh -s -- -d -b /usr/local/bin
 
       - name: "Install uv"
         shell: "bash"

From df4f9cb58f680d123d8cdac0541cb5480eb6f3f5 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Sun, 24 Aug 2025 13:22:38 -0400
Subject: [PATCH 24/97] sigh

---
 .github/workflows/unit-tests.yaml |  5 +----
 taskfiles/checksum/tests.yaml     | 17 ++---------------
 2 files changed, 3 insertions(+), 19 deletions(-)

diff --git a/.github/workflows/unit-tests.yaml b/.github/workflows/unit-tests.yaml
index 2dd8506..cce541c 100644
--- a/.github/workflows/unit-tests.yaml
+++ b/.github/workflows/unit-tests.yaml
@@ -32,10 +32,7 @@ jobs:
 
       - name: "Install task"
         shell: "bash"
-        # run: "npm install -g @go-task/cli"
-        run: >-
-          curl --fail --location --silent --show-error https://taskfile.dev/install.sh
-          | sh -s -- -d -b /usr/local/bin
+        run: "npm install -g @go-task/cli"
 
       - name: "Install uv"
         shell: "bash"
diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
index a87fd8b..b64c517 100644
--- a/taskfiles/checksum/tests.yaml
+++ b/taskfiles/checksum/tests.yaml
@@ -38,20 +38,7 @@ tasks:
       # Test create-dir-with-checksum ran the second time.
       - "test ! -e '{{.FILE_0}}'"
       - "test -e '{{.FILE_1}}'"
-
-      - defer: |-
-          echo "[debug] rerun exit code: {{.EXIT_CODE}}"
-      - "cat '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}'"
-      - |-
-        if cmp --silent "{{.CHECKSUM_FILE}}" "{{.CHECKSUM_FILE_REF}}"; then
-          echo "[debug] '{{.CHECKSUM_FILE}}' and '{{.CHECKSUM_FILE_REF}}' should differ."
-          exit 1
-        else
-          echo "[debug] '{{.CHECKSUM_FILE}}' and '{{.CHECKSUM_FILE_REF}}' differ!!"
-        fi
-      - "echo '[debug] rerun finished.'"
-
-      - "! cmp --silent '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}'"
+      - "! cmp --silent '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}' && true"
 
   checksum-test-skip:
     vars:
@@ -118,7 +105,7 @@ tasks:
       - "test ! -e '{{.FILE_1}}'"
       - "cmp --silent  '{{.FILE_0}}'  '{{.CHECKSUM_FILE_REF0}}'"
       - "cmp --silent '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF1}}'"
-      - "! cmp --silent '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF0}}'"
+      - "! cmp --silent '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF0}}' && true"
 
   checksum-test-init:
     internal: true

From 319771db7d147162ec1c8f5249c6b86798ed07f9 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Sun, 24 Aug 2025 13:30:03 -0400
Subject: [PATCH 25/97] what is the magic syntax

---
 taskfiles/checksum/tests.yaml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
index b64c517..4488b04 100644
--- a/taskfiles/checksum/tests.yaml
+++ b/taskfiles/checksum/tests.yaml
@@ -38,7 +38,7 @@ tasks:
       # Test create-dir-with-checksum ran the second time.
       - "test ! -e '{{.FILE_0}}'"
       - "test -e '{{.FILE_1}}'"
-      - "! cmp --silent '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}' && true"
+      - "(! cmp --silent '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}')"
 
   checksum-test-skip:
     vars:
@@ -105,7 +105,7 @@ tasks:
       - "test ! -e '{{.FILE_1}}'"
       - "cmp --silent  '{{.FILE_0}}'  '{{.CHECKSUM_FILE_REF0}}'"
       - "cmp --silent '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF1}}'"
-      - "! cmp --silent '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF0}}' && true"
+      - "(! cmp --silent '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF0}}')"
 
   checksum-test-init:
     internal: true

From c745ba80cf4ded2889c0ea8fb259bab91e5ad392 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Sun, 24 Aug 2025 13:45:50 -0400
Subject: [PATCH 26/97] meh

---
 taskfiles/checksum/tests.yaml | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
index 4488b04..71f788e 100644
--- a/taskfiles/checksum/tests.yaml
+++ b/taskfiles/checksum/tests.yaml
@@ -38,7 +38,9 @@ tasks:
       # Test create-dir-with-checksum ran the second time.
       - "test ! -e '{{.FILE_0}}'"
       - "test -e '{{.FILE_1}}'"
-      - "(! cmp --silent '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}')"
+      - |-
+        cmp --silent "{{.CHECKSUM_FILE}}" "{{.CHECKSUM_FILE_REF}}"
+        test $? -eq 1
 
   checksum-test-skip:
     vars:
@@ -105,7 +107,9 @@ tasks:
       - "test ! -e '{{.FILE_1}}'"
       - "cmp --silent  '{{.FILE_0}}'  '{{.CHECKSUM_FILE_REF0}}'"
       - "cmp --silent '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF1}}'"
-      - "(! cmp --silent '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF0}}')"
+      - |-
+        cmp --silent "{{.CHECKSUM_FILE}}" "{{.CHECKSUM_FILE_REF0}}"
+        test $? -eq 1
 
   checksum-test-init:
     internal: true

From 8959121876e0b4b5dd7e44761770c3c81ae084d9 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Sun, 24 Aug 2025 14:26:21 -0400
Subject: [PATCH 27/97] maybe

---
 taskfiles/checksum/tests.yaml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
index 71f788e..c893c3d 100644
--- a/taskfiles/checksum/tests.yaml
+++ b/taskfiles/checksum/tests.yaml
@@ -40,7 +40,7 @@ tasks:
       - "test -e '{{.FILE_1}}'"
       - |-
         cmp --silent "{{.CHECKSUM_FILE}}" "{{.CHECKSUM_FILE_REF}}"
-        test $? -eq 1
+        test $? -eq 1 && exit 0 || exit 1
 
   checksum-test-skip:
     vars:
@@ -109,7 +109,7 @@ tasks:
       - "cmp --silent '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF1}}'"
       - |-
         cmp --silent "{{.CHECKSUM_FILE}}" "{{.CHECKSUM_FILE_REF0}}"
-        test $? -eq 1
+        test $? -eq 1 && exit 0 || exit 1
 
   checksum-test-init:
     internal: true

From 040b694345383ef273632e98bdfe437cc0d135c0 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Sun, 24 Aug 2025 14:30:00 -0400
Subject: [PATCH 28/97] if else for macos

---
 taskfiles/checksum/tests.yaml | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
index c893c3d..cc6109c 100644
--- a/taskfiles/checksum/tests.yaml
+++ b/taskfiles/checksum/tests.yaml
@@ -39,8 +39,11 @@ tasks:
       - "test ! -e '{{.FILE_0}}'"
       - "test -e '{{.FILE_1}}'"
       - |-
-        cmp --silent "{{.CHECKSUM_FILE}}" "{{.CHECKSUM_FILE_REF}}"
-        test $? -eq 1 && exit 0 || exit 1
+        if cmp --silent "{{.CHECKSUM_FILE}}" "{{.CHECKSUM_FILE_REF}}"; then
+          exit 1
+        else
+          exit 0
+        fi
 
   checksum-test-skip:
     vars:
@@ -108,8 +111,11 @@ tasks:
       - "cmp --silent  '{{.FILE_0}}'  '{{.CHECKSUM_FILE_REF0}}'"
       - "cmp --silent '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF1}}'"
       - |-
-        cmp --silent "{{.CHECKSUM_FILE}}" "{{.CHECKSUM_FILE_REF0}}"
-        test $? -eq 1 && exit 0 || exit 1
+        if cmp --silent "{{.CHECKSUM_FILE}}" "{{.CHECKSUM_FILE_REF0}}"; then
+          exit 1
+        else
+          exit 0
+        fi
 
   checksum-test-init:
     internal: true

From 2240fd4112d18642353c3d85e271aeb51149c1d5 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Sun, 24 Aug 2025 14:38:13 -0400
Subject: [PATCH 29/97] just call bash idk

---
 taskfiles/checksum/tests.yaml | 16 ++++------------
 1 file changed, 4 insertions(+), 12 deletions(-)

diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
index cc6109c..1ceda1f 100644
--- a/taskfiles/checksum/tests.yaml
+++ b/taskfiles/checksum/tests.yaml
@@ -38,12 +38,8 @@ tasks:
       # Test create-dir-with-checksum ran the second time.
       - "test ! -e '{{.FILE_0}}'"
       - "test -e '{{.FILE_1}}'"
-      - |-
-        if cmp --silent "{{.CHECKSUM_FILE}}" "{{.CHECKSUM_FILE_REF}}"; then
-          exit 1
-        else
-          exit 0
-        fi
+      - >-
+        bash -c "! cmp --silent '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}'"
 
   checksum-test-skip:
     vars:
@@ -110,12 +106,8 @@ tasks:
       - "test ! -e '{{.FILE_1}}'"
       - "cmp --silent  '{{.FILE_0}}'  '{{.CHECKSUM_FILE_REF0}}'"
       - "cmp --silent '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF1}}'"
-      - |-
-        if cmp --silent "{{.CHECKSUM_FILE}}" "{{.CHECKSUM_FILE_REF0}}"; then
-          exit 1
-        else
-          exit 0
-        fi
+      - >-
+        bash -c "! cmp --silent '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF0}}'"
 
   checksum-test-init:
     internal: true

From 4bc71648b3061f803e1565fd5303fff1e000dcc6 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Sun, 24 Aug 2025 18:03:42 -0400
Subject: [PATCH 30/97] no silent??

---
 taskfiles/checksum/tests.yaml | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
index 1ceda1f..54acbee 100644
--- a/taskfiles/checksum/tests.yaml
+++ b/taskfiles/checksum/tests.yaml
@@ -38,8 +38,9 @@ tasks:
       # Test create-dir-with-checksum ran the second time.
       - "test ! -e '{{.FILE_0}}'"
       - "test -e '{{.FILE_1}}'"
-      - >-
-        bash -c "! cmp --silent '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}'"
+      - |-
+        cmp "{{.CHECKSUM_FILE}}" "{{.CHECKSUM_FILE_REF}}"
+        test $? -eq 1
 
   checksum-test-skip:
     vars:
@@ -106,8 +107,9 @@ tasks:
       - "test ! -e '{{.FILE_1}}'"
       - "cmp --silent  '{{.FILE_0}}'  '{{.CHECKSUM_FILE_REF0}}'"
       - "cmp --silent '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF1}}'"
-      - >-
-        bash -c "! cmp --silent '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF0}}'"
+      - |-
+        cmp "{{.CHECKSUM_FILE}}" "{{.CHECKSUM_FILE_REF0}}"
+        test $? -eq 1
 
   checksum-test-init:
     internal: true

From 4fdc23e5cea6f6e715203e860575ed9e1caa2f6f Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Sun, 24 Aug 2025 18:09:31 -0400
Subject: [PATCH 31/97] losing track

---
 taskfiles/checksum/tests.yaml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
index 54acbee..39df192 100644
--- a/taskfiles/checksum/tests.yaml
+++ b/taskfiles/checksum/tests.yaml
@@ -40,7 +40,7 @@ tasks:
       - "test -e '{{.FILE_1}}'"
       - |-
         cmp "{{.CHECKSUM_FILE}}" "{{.CHECKSUM_FILE_REF}}"
-        test $? -eq 1
+        test $? -eq 1 && exit 0 || exit 1
 
   checksum-test-skip:
     vars:
@@ -109,7 +109,7 @@ tasks:
       - "cmp --silent '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF1}}'"
       - |-
         cmp "{{.CHECKSUM_FILE}}" "{{.CHECKSUM_FILE_REF0}}"
-        test $? -eq 1
+        test $? -eq 1 && exit 0 || exit 1
 
   checksum-test-init:
     internal: true

From 23dd1e9da3b222521c82aa8a50e7885d4a9faffd Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Sun, 24 Aug 2025 22:01:01 -0400
Subject: [PATCH 32/97] help

---
 taskfiles/checksum/tests.yaml | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
index 39df192..95b6999 100644
--- a/taskfiles/checksum/tests.yaml
+++ b/taskfiles/checksum/tests.yaml
@@ -38,9 +38,16 @@ tasks:
       # Test create-dir-with-checksum ran the second time.
       - "test ! -e '{{.FILE_0}}'"
       - "test -e '{{.FILE_1}}'"
+      - defer: |-
+          echo "[debug] rerun {{.EXIT_CODE}}"
       - |-
         cmp "{{.CHECKSUM_FILE}}" "{{.CHECKSUM_FILE_REF}}"
-        test $? -eq 1 && exit 0 || exit 1
+        echo "sigh $?"
+        if cmp "{{.CHECKSUM_FILE}}" "{{.CHECKSUM_FILE_REF}}"; then
+          return 0
+        else
+          return 1
+        fi
 
   checksum-test-skip:
     vars:

From 4997cf2bce3ed026040fe1cf2eec105e35279fab Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Sun, 24 Aug 2025 22:10:19 -0400
Subject: [PATCH 33/97] full if statement

---
 taskfiles/checksum/tests.yaml | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
index 95b6999..6ad3ee1 100644
--- a/taskfiles/checksum/tests.yaml
+++ b/taskfiles/checksum/tests.yaml
@@ -40,12 +40,13 @@ tasks:
       - "test -e '{{.FILE_1}}'"
       - defer: |-
           echo "[debug] rerun {{.EXIT_CODE}}"
+      - "cmp --help"
       - |-
-        cmp "{{.CHECKSUM_FILE}}" "{{.CHECKSUM_FILE_REF}}"
-        echo "sigh $?"
         if cmp "{{.CHECKSUM_FILE}}" "{{.CHECKSUM_FILE_REF}}"; then
+          echo "true $?"
           return 0
         else
+          echo "false $?"
           return 1
         fi
 

From 05b2d684d2c0b9ec3f7636cae363797ef5674cea Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Sun, 24 Aug 2025 22:21:28 -0400
Subject: [PATCH 34/97] dump shell options

---
 taskfiles/checksum/tests.yaml | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
index 6ad3ee1..6ceeb94 100644
--- a/taskfiles/checksum/tests.yaml
+++ b/taskfiles/checksum/tests.yaml
@@ -41,13 +41,14 @@ tasks:
       - defer: |-
           echo "[debug] rerun {{.EXIT_CODE}}"
       - "cmp --help"
+      - printf %s\\n "$-"
       - |-
         if cmp "{{.CHECKSUM_FILE}}" "{{.CHECKSUM_FILE_REF}}"; then
           echo "true $?"
-          return 0
+          exit 0
         else
           echo "false $?"
-          return 1
+          exit 1
         fi
 
   checksum-test-skip:

From 8d655c2db5e9727b390a5c4e16e446ae37d8dabc Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Sun, 24 Aug 2025 22:31:35 -0400
Subject: [PATCH 35/97] hmm unbound

---
 taskfiles/checksum/tests.yaml | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
index 6ceeb94..89e8902 100644
--- a/taskfiles/checksum/tests.yaml
+++ b/taskfiles/checksum/tests.yaml
@@ -41,7 +41,10 @@ tasks:
       - defer: |-
           echo "[debug] rerun {{.EXIT_CODE}}"
       - "cmp --help"
-      - printf %s\\n "$-"
+      - "shopt -o"
+      - "shopt -po"
+      - "shopt -p"
+      - "set -o"
       - |-
         if cmp "{{.CHECKSUM_FILE}}" "{{.CHECKSUM_FILE_REF}}"; then
           echo "true $?"

From be5d2312a8806a3ca660363b71f6def2f5eb2d57 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Sun, 24 Aug 2025 22:37:55 -0400
Subject: [PATCH 36/97] go panic

---
 taskfiles/checksum/tests.yaml | 1 -
 1 file changed, 1 deletion(-)

diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
index 89e8902..a3f1083 100644
--- a/taskfiles/checksum/tests.yaml
+++ b/taskfiles/checksum/tests.yaml
@@ -43,7 +43,6 @@ tasks:
       - "cmp --help"
       - "shopt -o"
       - "shopt -po"
-      - "shopt -p"
       - "set -o"
       - |-
         if cmp "{{.CHECKSUM_FILE}}" "{{.CHECKSUM_FILE_REF}}"; then

From a6297c9849810836095afab06d50ed0efcfd235a Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Sun, 24 Aug 2025 22:53:01 -0400
Subject: [PATCH 37/97] weird shell

---
 taskfiles/checksum/tests.yaml | 14 ++++----------
 1 file changed, 4 insertions(+), 10 deletions(-)

diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
index a3f1083..b5735cd 100644
--- a/taskfiles/checksum/tests.yaml
+++ b/taskfiles/checksum/tests.yaml
@@ -42,16 +42,12 @@ tasks:
           echo "[debug] rerun {{.EXIT_CODE}}"
       - "cmp --help"
       - "shopt -o"
-      - "shopt -po"
-      - "set -o"
       - |-
-        if cmp "{{.CHECKSUM_FILE}}" "{{.CHECKSUM_FILE_REF}}"; then
-          echo "true $?"
-          exit 0
-        else
-          echo "false $?"
+        if cmp --silent "{{.CHECKSUM_FILE}}" "{{.CHECKSUM_FILE_REF}}"; then
+          echo "checksums shouldn't match"
           exit 1
         fi
+        echo $?
 
   checksum-test-skip:
     vars:
@@ -118,9 +114,7 @@ tasks:
       - "test ! -e '{{.FILE_1}}'"
       - "cmp --silent  '{{.FILE_0}}'  '{{.CHECKSUM_FILE_REF0}}'"
       - "cmp --silent '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF1}}'"
-      - |-
-        cmp "{{.CHECKSUM_FILE}}" "{{.CHECKSUM_FILE_REF0}}"
-        test $? -eq 1 && exit 0 || exit 1
+      - "! cmp '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF0}}'"
 
   checksum-test-init:
     internal: true

From 0144e8488e8c18888ad7393e61a8cea4af7e5d61 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Sun, 24 Aug 2025 23:06:04 -0400
Subject: [PATCH 38/97] error swallowing hmm

---
 taskfiles/checksum/tests.yaml | 14 +++++---------
 1 file changed, 5 insertions(+), 9 deletions(-)

diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
index b5735cd..9bb44b3 100644
--- a/taskfiles/checksum/tests.yaml
+++ b/taskfiles/checksum/tests.yaml
@@ -38,13 +38,9 @@ tasks:
       # Test create-dir-with-checksum ran the second time.
       - "test ! -e '{{.FILE_0}}'"
       - "test -e '{{.FILE_1}}'"
-      - defer: |-
-          echo "[debug] rerun {{.EXIT_CODE}}"
-      - "cmp --help"
       - "shopt -o"
       - |-
-        if cmp --silent "{{.CHECKSUM_FILE}}" "{{.CHECKSUM_FILE_REF}}"; then
-          echo "checksums shouldn't match"
+        if cmp -s "{{.CHECKSUM_FILE}}" "{{.CHECKSUM_FILE_REF}}"; then
           exit 1
         fi
         echo $?
@@ -75,7 +71,7 @@ tasks:
       # Test create-dir-with-checksum didn't run the second time.
       - "test -e '{{.FILE_0}}'"
       - "test ! -e '{{.FILE_1}}'"
-      - "cmp --silent '{{.CHECKSUM_MOD_TS}}' <(date -r '{{.CHECKSUM_FILE}}')"
+      - "cmp -s '{{.CHECKSUM_MOD_TS}}' <(date -r '{{.CHECKSUM_FILE}}')"
 
   checksum-test-update:
     vars:
@@ -112,9 +108,9 @@ tasks:
       # Test create-dir-with-checksum didn't run the second time.
       - "test -e '{{.FILE_0}}'"
       - "test ! -e '{{.FILE_1}}'"
-      - "cmp --silent  '{{.FILE_0}}'  '{{.CHECKSUM_FILE_REF0}}'"
-      - "cmp --silent '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF1}}'"
-      - "! cmp '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF0}}'"
+      - "cmp -s  '{{.FILE_0}}'  '{{.CHECKSUM_FILE_REF0}}'"
+      - "cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF1}}'"
+      - "! cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF0}}'"
 
   checksum-test-init:
     internal: true

From 361f89154b40ade4f8c340abe96cd52fa4324e06 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Sun, 24 Aug 2025 23:16:15 -0400
Subject: [PATCH 39/97] free me

---
 taskfiles/checksum/tests.yaml | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
index 9bb44b3..6c4486e 100644
--- a/taskfiles/checksum/tests.yaml
+++ b/taskfiles/checksum/tests.yaml
@@ -40,10 +40,12 @@ tasks:
       - "test -e '{{.FILE_1}}'"
       - "shopt -o"
       - |-
+        shopt -u errexit
         if cmp -s "{{.CHECKSUM_FILE}}" "{{.CHECKSUM_FILE_REF}}"; then
           exit 1
         fi
         echo $?
+      - "cmp -h"
 
   checksum-test-skip:
     vars:

From da843e9a38f1894e3cb6a2ac9590563557b8f64f Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Sun, 24 Aug 2025 23:23:02 -0400
Subject: [PATCH 40/97] forgive me

---
 taskfiles/checksum/tests.yaml | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
index 6c4486e..ed0215f 100644
--- a/taskfiles/checksum/tests.yaml
+++ b/taskfiles/checksum/tests.yaml
@@ -38,14 +38,14 @@ tasks:
       # Test create-dir-with-checksum ran the second time.
       - "test ! -e '{{.FILE_0}}'"
       - "test -e '{{.FILE_1}}'"
-      - "shopt -o"
       - |-
-        shopt -u errexit
+        set -o
+        set +e
+        set -o
         if cmp -s "{{.CHECKSUM_FILE}}" "{{.CHECKSUM_FILE_REF}}"; then
           exit 1
         fi
         echo $?
-      - "cmp -h"
 
   checksum-test-skip:
     vars:

From 129218493626b030e260f0aba6fb4aa5637647a4 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Sun, 24 Aug 2025 23:33:19 -0400
Subject: [PATCH 41/97] maybe the end

---
 taskfiles/checksum/tests.yaml | 11 ++++-------
 1 file changed, 4 insertions(+), 7 deletions(-)

diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
index ed0215f..8b3a731 100644
--- a/taskfiles/checksum/tests.yaml
+++ b/taskfiles/checksum/tests.yaml
@@ -39,13 +39,8 @@ tasks:
       - "test ! -e '{{.FILE_0}}'"
       - "test -e '{{.FILE_1}}'"
       - |-
-        set -o
         set +e
-        set -o
-        if cmp -s "{{.CHECKSUM_FILE}}" "{{.CHECKSUM_FILE_REF}}"; then
-          exit 1
-        fi
-        echo $?
+        ! cmp -s "{{.CHECKSUM_FILE}}" "{{.CHECKSUM_FILE_REF}}"
 
   checksum-test-skip:
     vars:
@@ -112,7 +107,9 @@ tasks:
       - "test ! -e '{{.FILE_1}}'"
       - "cmp -s  '{{.FILE_0}}'  '{{.CHECKSUM_FILE_REF0}}'"
       - "cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF1}}'"
-      - "! cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF0}}'"
+      - |-
+        set +e
+        ! cmp -s "{{.CHECKSUM_FILE}}" "{{.CHECKSUM_FILE_REF0}}"
 
   checksum-test-init:
     internal: true

From cf02bb6072f9fc02c82322adb406cbc88c598bd9 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Sun, 24 Aug 2025 23:37:51 -0400
Subject: [PATCH 42/97] maybe the end

---
 taskfiles/checksum/tests.yaml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
index 8b3a731..c9a6925 100644
--- a/taskfiles/checksum/tests.yaml
+++ b/taskfiles/checksum/tests.yaml
@@ -40,7 +40,7 @@ tasks:
       - "test -e '{{.FILE_1}}'"
       - |-
         set +e
-        ! cmp -s "{{.CHECKSUM_FILE}}" "{{.CHECKSUM_FILE_REF}}"
+        ! cmp -s "{{.CHECKSUM_FILE}}" "{{.CHECKSUM_FILE_REF}}" && true
 
   checksum-test-skip:
     vars:
@@ -109,7 +109,7 @@ tasks:
       - "cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF1}}'"
       - |-
         set +e
-        ! cmp -s "{{.CHECKSUM_FILE}}" "{{.CHECKSUM_FILE_REF0}}"
+        ! cmp -s "{{.CHECKSUM_FILE}}" "{{.CHECKSUM_FILE_REF0}}" && true
 
   checksum-test-init:
     internal: true

From 8a72950521247bba67e767005e167c75f069ff27 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Sun, 24 Aug 2025 23:44:08 -0400
Subject: [PATCH 43/97] clpain

---
 taskfiles/checksum/tests.yaml | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
index c9a6925..cec5a42 100644
--- a/taskfiles/checksum/tests.yaml
+++ b/taskfiles/checksum/tests.yaml
@@ -40,7 +40,9 @@ tasks:
       - "test -e '{{.FILE_1}}'"
       - |-
         set +e
-        ! cmp -s "{{.CHECKSUM_FILE}}" "{{.CHECKSUM_FILE_REF}}" && true
+        ! cmp -l "{{.CHECKSUM_FILE}}" "{{.CHECKSUM_FILE_REF}}" && true
+      - |-
+        ! cmp -l "{{.CHECKSUM_FILE}}" "{{.CHECKSUM_FILE_REF}}" && true
 
   checksum-test-skip:
     vars:

From 2bb4119d1cce9138ad0f9209389e5ad18e66d8e3 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Sun, 24 Aug 2025 23:56:47 -0400
Subject: [PATCH 44/97] hardswap diff?

---
 taskfiles/checksum/tests.yaml | 17 ++++++-----------
 1 file changed, 6 insertions(+), 11 deletions(-)

diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
index cec5a42..b3b88a1 100644
--- a/taskfiles/checksum/tests.yaml
+++ b/taskfiles/checksum/tests.yaml
@@ -38,11 +38,8 @@ tasks:
       # Test create-dir-with-checksum ran the second time.
       - "test ! -e '{{.FILE_0}}'"
       - "test -e '{{.FILE_1}}'"
-      - |-
-        set +e
-        ! cmp -l "{{.CHECKSUM_FILE}}" "{{.CHECKSUM_FILE_REF}}" && true
-      - |-
-        ! cmp -l "{{.CHECKSUM_FILE}}" "{{.CHECKSUM_FILE_REF}}" && true
+      # - "! diff '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}' > /dev/null"
+      - "! diff '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}'"
 
   checksum-test-skip:
     vars:
@@ -70,7 +67,7 @@ tasks:
       # Test create-dir-with-checksum didn't run the second time.
       - "test -e '{{.FILE_0}}'"
       - "test ! -e '{{.FILE_1}}'"
-      - "cmp -s '{{.CHECKSUM_MOD_TS}}' <(date -r '{{.CHECKSUM_FILE}}')"
+      - "diff -q '{{.CHECKSUM_MOD_TS}}' <(date -r '{{.CHECKSUM_FILE}}')"
 
   checksum-test-update:
     vars:
@@ -107,11 +104,9 @@ tasks:
       # Test create-dir-with-checksum didn't run the second time.
       - "test -e '{{.FILE_0}}'"
       - "test ! -e '{{.FILE_1}}'"
-      - "cmp -s  '{{.FILE_0}}'  '{{.CHECKSUM_FILE_REF0}}'"
-      - "cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF1}}'"
-      - |-
-        set +e
-        ! cmp -s "{{.CHECKSUM_FILE}}" "{{.CHECKSUM_FILE_REF0}}" && true
+      - "diff -q '{{.FILE_0}}'  '{{.CHECKSUM_FILE_REF0}}'"
+      - "diff -q '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF1}}'"
+      - "! diff '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}'"
 
   checksum-test-init:
     internal: true

From 96f7cfe75486f1def4ecaf9d8753e4f13d579f0b Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Mon, 25 Aug 2025 00:03:54 -0400
Subject: [PATCH 45/97] cipain

---
 taskfiles/checksum/tests.yaml | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
index b3b88a1..e07e6f3 100644
--- a/taskfiles/checksum/tests.yaml
+++ b/taskfiles/checksum/tests.yaml
@@ -38,8 +38,7 @@ tasks:
       # Test create-dir-with-checksum ran the second time.
       - "test ! -e '{{.FILE_0}}'"
       - "test -e '{{.FILE_1}}'"
-      # - "! diff '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}' > /dev/null"
-      - "! diff '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}'"
+      - "! (diff '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}')"
 
   checksum-test-skip:
     vars:
@@ -106,7 +105,7 @@ tasks:
       - "test ! -e '{{.FILE_1}}'"
       - "diff -q '{{.FILE_0}}'  '{{.CHECKSUM_FILE_REF0}}'"
       - "diff -q '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF1}}'"
-      - "! diff '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}'"
+      - "! diff '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF0}}'"
 
   checksum-test-init:
     internal: true

From 42f74957d8a326fa278ec3ec49a5d9ea94104657 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Mon, 25 Aug 2025 00:14:53 -0400
Subject: [PATCH 46/97] same diff

---
 taskfiles/checksum/tests.yaml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
index e07e6f3..e4a5796 100644
--- a/taskfiles/checksum/tests.yaml
+++ b/taskfiles/checksum/tests.yaml
@@ -38,7 +38,7 @@ tasks:
       # Test create-dir-with-checksum ran the second time.
       - "test ! -e '{{.FILE_0}}'"
       - "test -e '{{.FILE_1}}'"
-      - "! (diff '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}')"
+      - "! diff '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}' && true"
 
   checksum-test-skip:
     vars:
@@ -105,7 +105,7 @@ tasks:
       - "test ! -e '{{.FILE_1}}'"
       - "diff -q '{{.FILE_0}}'  '{{.CHECKSUM_FILE_REF0}}'"
       - "diff -q '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF1}}'"
-      - "! diff '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF0}}'"
+      - "! diff '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF0}}' && true"
 
   checksum-test-init:
     internal: true

From 1a2c692227228903fdf2be6bc591f98624618e8b Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Mon, 25 Aug 2025 00:47:31 -0400
Subject: [PATCH 47/97] not posix?

---
 taskfiles/checksum/tests.yaml | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
index e4a5796..e8c3111 100644
--- a/taskfiles/checksum/tests.yaml
+++ b/taskfiles/checksum/tests.yaml
@@ -38,7 +38,9 @@ tasks:
       # Test create-dir-with-checksum ran the second time.
       - "test ! -e '{{.FILE_0}}'"
       - "test -e '{{.FILE_1}}'"
-      - "! diff '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}' && true"
+      - "echo $SHELL"
+      - "echo $(diff '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}')"
+      - "! diff '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}'; echo $?"
 
   checksum-test-skip:
     vars:

From d86541d3f4ea871d3de8307f804380c4d98e2746 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Mon, 25 Aug 2025 01:17:32 -0400
Subject: [PATCH 48/97] so lost

---
 taskfiles/checksum/tests.yaml | 21 +++++++++++----------
 1 file changed, 11 insertions(+), 10 deletions(-)

diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
index e8c3111..5f62eb0 100644
--- a/taskfiles/checksum/tests.yaml
+++ b/taskfiles/checksum/tests.yaml
@@ -35,12 +35,12 @@ tasks:
           CHECKSUM_FILE: "{{.CHECKSUM_FILE}}"
           FILE_PATH: "{{.FILE_1}}"
 
-      # Test create-dir-with-checksum ran the second time.
+      # Test create-dir-with-checksum ran the second time and created a different checksum.
       - "test ! -e '{{.FILE_0}}'"
       - "test -e '{{.FILE_1}}'"
-      - "echo $SHELL"
-      - "echo $(diff '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}')"
-      - "! diff '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}'; echo $?"
+      - "! cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}' && true"
+      - "! cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}'; echo $?"
+      - "! cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}'"
 
   checksum-test-skip:
     vars:
@@ -65,10 +65,10 @@ tasks:
           CHECKSUM_FILE: "{{.CHECKSUM_FILE}}"
           FILE_PATH: "{{.FILE_1}}"
 
-      # Test create-dir-with-checksum didn't run the second time.
+      # Test create-dir-with-checksum didn't run the second time and the checksum is unmodified.
       - "test -e '{{.FILE_0}}'"
       - "test ! -e '{{.FILE_1}}'"
-      - "diff -q '{{.CHECKSUM_MOD_TS}}' <(date -r '{{.CHECKSUM_FILE}}')"
+      - "cmp -s '{{.CHECKSUM_MOD_TS}}' <(date -r '{{.CHECKSUM_FILE}}')"
 
   checksum-test-update:
     vars:
@@ -102,12 +102,13 @@ tasks:
           CHECKSUM_FILE: "{{.CHECKSUM_FILE}}"
           FILE_PATH: "{{.FILE_1}}"
 
-      # Test create-dir-with-checksum didn't run the second time.
+      # Test create-dir-with-checksum didn't run the second time and the updated checksum is
+      # different from the original.
       - "test -e '{{.FILE_0}}'"
       - "test ! -e '{{.FILE_1}}'"
-      - "diff -q '{{.FILE_0}}'  '{{.CHECKSUM_FILE_REF0}}'"
-      - "diff -q '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF1}}'"
-      - "! diff '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF0}}' && true"
+      - "cmp -s '{{.FILE_0}}'  '{{.CHECKSUM_FILE_REF0}}'"
+      - "cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF1}}'"
+      - "set -o pipefail; ! cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF0}}' && true"
 
   checksum-test-init:
     internal: true

From b03226cdf4e45ad6f7bd3bcbaadb5f9e43a372d5 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Mon, 25 Aug 2025 01:26:41 -0400
Subject: [PATCH 49/97] try without pipefail

---
 taskfile.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/taskfile.yaml b/taskfile.yaml
index 4cf9fbf..64c7948 100644
--- a/taskfile.yaml
+++ b/taskfile.yaml
@@ -4,7 +4,7 @@ includes:
   lint: "./taskfiles/lint/main.yaml"
   tests: "./taskfiles/tests.yaml"
 
-set: ["u", "pipefail"]
+set: ["u"]
 shopt: ["globstar"]
 
 vars:

From 058b86775182c8768b47ec0e05f1620f28aa1c76 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Mon, 25 Aug 2025 01:31:38 -0400
Subject: [PATCH 50/97] try again

---
 taskfiles/checksum/tests.yaml | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
index 5f62eb0..caa6f42 100644
--- a/taskfiles/checksum/tests.yaml
+++ b/taskfiles/checksum/tests.yaml
@@ -38,9 +38,8 @@ tasks:
       # Test create-dir-with-checksum ran the second time and created a different checksum.
       - "test ! -e '{{.FILE_0}}'"
       - "test -e '{{.FILE_1}}'"
-      - "! cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}' && true"
       - "! cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}'; echo $?"
-      - "! cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}'"
+      - "(! cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}') && exit $?"
 
   checksum-test-skip:
     vars:
@@ -108,7 +107,8 @@ tasks:
       - "test ! -e '{{.FILE_1}}'"
       - "cmp -s '{{.FILE_0}}'  '{{.CHECKSUM_FILE_REF0}}'"
       - "cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF1}}'"
-      - "set -o pipefail; ! cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF0}}' && true"
+      - "! cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF0}}'; echo $?"
+      - "(! cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF0}}') && exit $?"
 
   checksum-test-init:
     internal: true

From 74a07baad185a2f14eadda3fb01b4d5389d973b2 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Mon, 25 Aug 2025 02:02:40 -0400
Subject: [PATCH 51/97] no !

---
 taskfile.yaml                 |  2 +-
 taskfiles/checksum/tests.yaml | 16 +++++++++++++---
 2 files changed, 14 insertions(+), 4 deletions(-)

diff --git a/taskfile.yaml b/taskfile.yaml
index 64c7948..4cf9fbf 100644
--- a/taskfile.yaml
+++ b/taskfile.yaml
@@ -4,7 +4,7 @@ includes:
   lint: "./taskfiles/lint/main.yaml"
   tests: "./taskfiles/tests.yaml"
 
-set: ["u"]
+set: ["u", "pipefail"]
 shopt: ["globstar"]
 
 vars:
diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
index caa6f42..39e4823 100644
--- a/taskfiles/checksum/tests.yaml
+++ b/taskfiles/checksum/tests.yaml
@@ -39,7 +39,12 @@ tasks:
       - "test ! -e '{{.FILE_0}}'"
       - "test -e '{{.FILE_1}}'"
       - "! cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}'; echo $?"
-      - "(! cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}') && exit $?"
+      - |-
+        if cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}'; then
+          exit 0
+        else 
+          exit 1
+        fi
 
   checksum-test-skip:
     vars:
@@ -107,8 +112,13 @@ tasks:
       - "test ! -e '{{.FILE_1}}'"
       - "cmp -s '{{.FILE_0}}'  '{{.CHECKSUM_FILE_REF0}}'"
       - "cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF1}}'"
-      - "! cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF0}}'; echo $?"
-      - "(! cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF0}}') && exit $?"
+      - "! cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF0}}'; echo \"result: $?\""
+      - |-
+        if cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF0}}'; then
+          exit 0
+        else 
+          exit 1
+        fi
 
   checksum-test-init:
     internal: true

From bb1688b6c99b79fd492710b9c6acd1cd4ab190b0 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Mon, 25 Aug 2025 02:12:23 -0400
Subject: [PATCH 52/97] dumb person does dumb things

---
 taskfiles/checksum/tests.yaml | 20 +++++++++++++++-----
 1 file changed, 15 insertions(+), 5 deletions(-)

diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
index 39e4823..f5df450 100644
--- a/taskfiles/checksum/tests.yaml
+++ b/taskfiles/checksum/tests.yaml
@@ -38,11 +38,16 @@ tasks:
       # Test create-dir-with-checksum ran the second time and created a different checksum.
       - "test ! -e '{{.FILE_0}}'"
       - "test -e '{{.FILE_1}}'"
-      - "! cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}'; echo $?"
       - |-
         if cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}'; then
+          exit 1
+        else
+          exit 0
+        fi
+      - |-
+        if ! cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}'; then
           exit 0
-        else 
+        else
           exit 1
         fi
 
@@ -112,11 +117,16 @@ tasks:
       - "test ! -e '{{.FILE_1}}'"
       - "cmp -s '{{.FILE_0}}'  '{{.CHECKSUM_FILE_REF0}}'"
       - "cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF1}}'"
-      - "! cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF0}}'; echo \"result: $?\""
       - |-
-        if cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF0}}'; then
+        if ! cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF0}}'; then
+          exit 1
+        else
+          exit 0
+        fi
+      - |-
+        if ! cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF0}}'; then
           exit 0
-        else 
+        else
           exit 1
         fi
 

From 6ddec14329828df91d367f302fc614b3d1e0ce82 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Mon, 25 Aug 2025 02:29:50 -0400
Subject: [PATCH 53/97] dumb person does more dumb stuff

---
 taskfiles/checksum/tests.yaml | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
index f5df450..b943ba4 100644
--- a/taskfiles/checksum/tests.yaml
+++ b/taskfiles/checksum/tests.yaml
@@ -38,6 +38,7 @@ tasks:
       # Test create-dir-with-checksum ran the second time and created a different checksum.
       - "test ! -e '{{.FILE_0}}'"
       - "test -e '{{.FILE_1}}'"
+      - "! false; echo \"sanity: $?\""
       - |-
         if cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}'; then
           exit 1
@@ -117,8 +118,9 @@ tasks:
       - "test ! -e '{{.FILE_1}}'"
       - "cmp -s '{{.FILE_0}}'  '{{.CHECKSUM_FILE_REF0}}'"
       - "cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF1}}'"
+      - "! false; echo \"sanity: $?\""
       - |-
-        if ! cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF0}}'; then
+        if cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF0}}'; then
           exit 1
         else
           exit 0

From 7d96c0a24d4a8062c317fd33548e917c990165b2 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Mon, 25 Aug 2025 02:37:58 -0400
Subject: [PATCH 54/97] dumb person does even more dumb stuff

---
 taskfiles/checksum/tests.yaml | 8 ++++----
 taskfiles/tests.yaml          | 2 +-
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
index b943ba4..c5fd2c7 100644
--- a/taskfiles/checksum/tests.yaml
+++ b/taskfiles/checksum/tests.yaml
@@ -38,15 +38,16 @@ tasks:
       # Test create-dir-with-checksum ran the second time and created a different checksum.
       - "test ! -e '{{.FILE_0}}'"
       - "test -e '{{.FILE_1}}'"
-      - "! false; echo \"sanity: $?\""
+      - "cmp -h"
+      - "echo \"$(cmp '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}')\""
       - |-
-        if cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}'; then
+        if cmp '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}'; then
           exit 1
         else
           exit 0
         fi
       - |-
-        if ! cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}'; then
+        if ! cmp '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}'; then
           exit 0
         else
           exit 1
@@ -118,7 +119,6 @@ tasks:
       - "test ! -e '{{.FILE_1}}'"
       - "cmp -s '{{.FILE_0}}'  '{{.CHECKSUM_FILE_REF0}}'"
       - "cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF1}}'"
-      - "! false; echo \"sanity: $?\""
       - |-
         if cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF0}}'; then
           exit 1
diff --git a/taskfiles/tests.yaml b/taskfiles/tests.yaml
index 84626f9..3d2efaf 100644
--- a/taskfiles/tests.yaml
+++ b/taskfiles/tests.yaml
@@ -10,7 +10,7 @@ tasks:
   all:
     internal: true
     cmds:
-      - task: "boost"
+      # - task: "boost"
       - task: "checksum"
       - task: "remote"
       - task: "ystdlib-py"

From 5ef2d3191ff88dab39ca68630856ebfbba24a35b Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Mon, 25 Aug 2025 02:41:10 -0400
Subject: [PATCH 55/97] one more

---
 taskfiles/checksum/tests.yaml | 1 -
 1 file changed, 1 deletion(-)

diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
index c5fd2c7..1207408 100644
--- a/taskfiles/checksum/tests.yaml
+++ b/taskfiles/checksum/tests.yaml
@@ -38,7 +38,6 @@ tasks:
       # Test create-dir-with-checksum ran the second time and created a different checksum.
       - "test ! -e '{{.FILE_0}}'"
       - "test -e '{{.FILE_1}}'"
-      - "cmp -h"
       - "echo \"$(cmp '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}')\""
       - |-
         if cmp '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}'; then

From dc829f2463dfcddfc6f6014b3d843480f55328a4 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Mon, 25 Aug 2025 02:45:28 -0400
Subject: [PATCH 56/97] bed time

---
 .github/workflows/unit-tests.yaml | 2 +-
 taskfiles/checksum/tests.yaml     | 3 ++-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/unit-tests.yaml b/.github/workflows/unit-tests.yaml
index cce541c..aabe8fa 100644
--- a/.github/workflows/unit-tests.yaml
+++ b/.github/workflows/unit-tests.yaml
@@ -39,4 +39,4 @@ jobs:
         run: "curl --fail --location --silent --show-error https://astral.sh/uv/install.sh | sh"
 
       - name: "Run unit tests"
-        run: "task test"
+        run: "task test --concurrency 1 --verbose"
diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
index 1207408..f89d7fc 100644
--- a/taskfiles/checksum/tests.yaml
+++ b/taskfiles/checksum/tests.yaml
@@ -38,7 +38,8 @@ tasks:
       # Test create-dir-with-checksum ran the second time and created a different checksum.
       - "test ! -e '{{.FILE_0}}'"
       - "test -e '{{.FILE_1}}'"
-      - "echo \"$(cmp '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}')\""
+      - "cat '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}'"
+      - "echo \"$(cmp -b '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}')\""
       - |-
         if cmp '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}'; then
           exit 1

From f1c73f230ebf54886d59f8e958d4c3cbd4438ac5 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Mon, 25 Aug 2025 02:48:00 -0400
Subject: [PATCH 57/97] file dne?

---
 taskfiles/checksum/tests.yaml | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
index f89d7fc..37bcbd1 100644
--- a/taskfiles/checksum/tests.yaml
+++ b/taskfiles/checksum/tests.yaml
@@ -38,7 +38,8 @@ tasks:
       # Test create-dir-with-checksum ran the second time and created a different checksum.
       - "test ! -e '{{.FILE_0}}'"
       - "test -e '{{.FILE_1}}'"
-      - "cat '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}'"
+      - "cat '{{.CHECKSUM_FILE}}'"
+      - "cat '{{.CHECKSUM_FILE_REF}}'"
       - "echo \"$(cmp -b '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}')\""
       - |-
         if cmp '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}'; then

From 853afcffe338ce7786de780c8425dfcfde114c28 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Mon, 25 Aug 2025 02:51:24 -0400
Subject: [PATCH 58/97] bad mistakes

---
 taskfiles/checksum/tests.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
index 37bcbd1..814109d 100644
--- a/taskfiles/checksum/tests.yaml
+++ b/taskfiles/checksum/tests.yaml
@@ -158,7 +158,7 @@ tasks:
       - |-
         rm -rf "{{.DIR}}"
         mkdir -p "{{.DIR}}"
-        touch "{{.FILE_PATH}}"
+        echo "{{.FILE_PATH}}" > "{{.FILE_PATH}}"
       - task: "checksum:compute"
         vars:
           CHECKSUM_FILE: "{{.CHECKSUM_FILE}}"

From a9cf0000de6418b2eb53746e19d9b8cbc4351b02 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Mon, 25 Aug 2025 02:52:53 -0400
Subject: [PATCH 59/97] macos rm??

---
 taskfiles/checksum/tests.yaml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
index 814109d..b667ffe 100644
--- a/taskfiles/checksum/tests.yaml
+++ b/taskfiles/checksum/tests.yaml
@@ -156,9 +156,9 @@ tasks:
           INCLUDE_PATTERNS: ["{{.DIR}}"]
     cmds:
       - |-
-        rm -rf "{{.DIR}}"
+        rm -rf "{{.DIR}}/"
         mkdir -p "{{.DIR}}"
-        echo "{{.FILE_PATH}}" > "{{.FILE_PATH}}"
+        touch "{{.FILE_PATH}}"
       - task: "checksum:compute"
         vars:
           CHECKSUM_FILE: "{{.CHECKSUM_FILE}}"

From 6a959ee8b5ecb91b2be2eb0155e045be48c3868a Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Mon, 25 Aug 2025 02:54:30 -0400
Subject: [PATCH 60/97] need local macos runner

---
 exports/taskfiles/utils/checksum.yaml | 2 +-
 taskfiles/checksum/tests.yaml         | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/exports/taskfiles/utils/checksum.yaml b/exports/taskfiles/utils/checksum.yaml
index 0641087..84adfdf 100644
--- a/exports/taskfiles/utils/checksum.yaml
+++ b/exports/taskfiles/utils/checksum.yaml
@@ -44,7 +44,7 @@ tasks:
         2> /dev/null
         | md5sum > {{.CHECKSUM_FILE}}
     # Ignore errors so that dependent tasks don't fail
-    ignore_error: true
+    # ignore_error: true
 
   # Validates the checksum of the given path include patterns matches the checksum in the given
   # file. If `FAIL` is set to "true" the task will fail, otherwise the checksum file is deleted.
diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
index b667ffe..37bcbd1 100644
--- a/taskfiles/checksum/tests.yaml
+++ b/taskfiles/checksum/tests.yaml
@@ -156,7 +156,7 @@ tasks:
           INCLUDE_PATTERNS: ["{{.DIR}}"]
     cmds:
       - |-
-        rm -rf "{{.DIR}}/"
+        rm -rf "{{.DIR}}"
         mkdir -p "{{.DIR}}"
         touch "{{.FILE_PATH}}"
       - task: "checksum:compute"

From 78abea7b5f974bb7ca930fdaaa4590ec63fa8c75 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Mon, 25 Aug 2025 09:14:01 -0400
Subject: [PATCH 61/97] macos same checksum?

---
 exports/taskfiles/utils/checksum.yaml |  2 +-
 taskfiles/checksum/tests.yaml         | 13 +++++++++----
 2 files changed, 10 insertions(+), 5 deletions(-)

diff --git a/exports/taskfiles/utils/checksum.yaml b/exports/taskfiles/utils/checksum.yaml
index 84adfdf..0641087 100644
--- a/exports/taskfiles/utils/checksum.yaml
+++ b/exports/taskfiles/utils/checksum.yaml
@@ -44,7 +44,7 @@ tasks:
         2> /dev/null
         | md5sum > {{.CHECKSUM_FILE}}
     # Ignore errors so that dependent tasks don't fail
-    # ignore_error: true
+    ignore_error: true
 
   # Validates the checksum of the given path include patterns matches the checksum in the given
   # file. If `FAIL` is set to "true" the task will fail, otherwise the checksum file is deleted.
diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
index 37bcbd1..a2d34c7 100644
--- a/taskfiles/checksum/tests.yaml
+++ b/taskfiles/checksum/tests.yaml
@@ -38,9 +38,14 @@ tasks:
       # Test create-dir-with-checksum ran the second time and created a different checksum.
       - "test ! -e '{{.FILE_0}}'"
       - "test -e '{{.FILE_1}}'"
-      - "cat '{{.CHECKSUM_FILE}}'"
-      - "cat '{{.CHECKSUM_FILE_REF}}'"
-      - "echo \"$(cmp -b '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}')\""
+      - |-
+        echo "checksum_file"
+        date -r '{{.CHECKSUM_FILE}}'
+        cat '{{.CHECKSUM_FILE}}'
+      - |-
+        echo "checksum_file"
+        date -r '{{.CHECKSUM_FILE_REF}}'
+        cat '{{.CHECKSUM_FILE_REF}}'
       - |-
         if cmp '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}'; then
           exit 1
@@ -162,4 +167,4 @@ tasks:
       - task: "checksum:compute"
         vars:
           CHECKSUM_FILE: "{{.CHECKSUM_FILE}}"
-          INCLUDE_PATTERNS: ["{{.DIR}}"]
+          INCLUDE_PATTERNS: ["{{.DIR}}/*"]

From f09e08393e6368338174d9be682874f675af51d6 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Mon, 25 Aug 2025 09:28:48 -0400
Subject: [PATCH 62/97] why tar mad

---
 taskfiles/checksum/tests.yaml | 30 +++++++++++++++++++++++++++---
 1 file changed, 27 insertions(+), 3 deletions(-)

diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
index a2d34c7..0b50f7a 100644
--- a/taskfiles/checksum/tests.yaml
+++ b/taskfiles/checksum/tests.yaml
@@ -39,13 +39,37 @@ tasks:
       - "test ! -e '{{.FILE_0}}'"
       - "test -e '{{.FILE_1}}'"
       - |-
-        echo "checksum_file"
         date -r '{{.CHECKSUM_FILE}}'
         cat '{{.CHECKSUM_FILE}}'
       - |-
-        echo "checksum_file"
         date -r '{{.CHECKSUM_FILE_REF}}'
         cat '{{.CHECKSUM_FILE_REF}}'
+      - >-
+        tar
+        --create
+        --file -
+        --group 0
+        --mtime "UTC 1970-01-01"
+        --numeric-owner
+        --owner 0
+        --sort name
+        --no-anchored
+        --wildcards
+        "{{.SRC_DIR}}"
+      - >-
+        tar
+        --create
+        --file -
+        --group 0
+        --mtime "UTC 1970-01-01"
+        --numeric-owner
+        --owner 0
+        --sort name
+        --no-anchored
+        --wildcards
+        "{{.SRC_DIR}}"
+        2> /dev/null
+        | md5sum
       - |-
         if cmp '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}'; then
           exit 1
@@ -167,4 +191,4 @@ tasks:
       - task: "checksum:compute"
         vars:
           CHECKSUM_FILE: "{{.CHECKSUM_FILE}}"
-          INCLUDE_PATTERNS: ["{{.DIR}}/*"]
+          INCLUDE_PATTERNS: ["{{.DIR}}"]

From 4743a674c5f081b4c91293a9715201ec679bc111 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Mon, 25 Aug 2025 09:46:07 -0400
Subject: [PATCH 63/97] this shouldn't work

---
 .github/workflows/unit-tests.yaml | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/.github/workflows/unit-tests.yaml b/.github/workflows/unit-tests.yaml
index aabe8fa..08556c7 100644
--- a/.github/workflows/unit-tests.yaml
+++ b/.github/workflows/unit-tests.yaml
@@ -38,5 +38,9 @@ jobs:
         shell: "bash"
         run: "curl --fail --location --silent --show-error https://astral.sh/uv/install.sh | sh"
 
+      - if: "'macos-15' == matrix.os"
+        run: |-
+          brew install coreutils
+
       - name: "Run unit tests"
         run: "task test --concurrency 1 --verbose"

From b6552d1e36906205a0101ef8d435bbfa3ee781f8 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Mon, 25 Aug 2025 09:54:28 -0400
Subject: [PATCH 64/97] gtar auto installed?

---
 .github/workflows/unit-tests.yaml     |  4 ----
 exports/taskfiles/utils/checksum.yaml | 13 ++++++++-----
 taskfiles/checksum/tests.yaml         |  7 +++++--
 3 files changed, 13 insertions(+), 11 deletions(-)

diff --git a/.github/workflows/unit-tests.yaml b/.github/workflows/unit-tests.yaml
index 08556c7..aabe8fa 100644
--- a/.github/workflows/unit-tests.yaml
+++ b/.github/workflows/unit-tests.yaml
@@ -38,9 +38,5 @@ jobs:
         shell: "bash"
         run: "curl --fail --location --silent --show-error https://astral.sh/uv/install.sh | sh"
 
-      - if: "'macos-15' == matrix.os"
-        run: |-
-          brew install coreutils
-
       - name: "Run unit tests"
         run: "task test --concurrency 1 --verbose"
diff --git a/exports/taskfiles/utils/checksum.yaml b/exports/taskfiles/utils/checksum.yaml
index 0641087..358f621 100644
--- a/exports/taskfiles/utils/checksum.yaml
+++ b/exports/taskfiles/utils/checksum.yaml
@@ -12,7 +12,10 @@ tasks:
     desc: "Tries to compute a checksum for the given paths and output it to a file."
     internal: true
     label: "{{.TASK}}-{{.CHECKSUM_FILE}}"
-    silent: true
+    # silent: true
+    vars:
+      TAR: >-
+        {{if eq OS "darwin"}}gtar{{else}}tar{{end}}
     requires:
       vars: ["CHECKSUM_FILE", "INCLUDE_PATTERNS"]
     cmds:
@@ -25,7 +28,7 @@ tasks:
       # passed to `tar` as arguments. If the input patterns are passed to `tar` with quotes, the
       # pattern won't be evaluated and will instead be treated literally.
       - >-
-        tar
+        {{.TAR}}
         --create
         --file -
         --group 0
@@ -44,7 +47,7 @@ tasks:
         2> /dev/null
         | md5sum > {{.CHECKSUM_FILE}}
     # Ignore errors so that dependent tasks don't fail
-    ignore_error: true
+    # ignore_error: true
 
   # Validates the checksum of the given path include patterns matches the checksum in the given
   # file. If `FAIL` is set to "true" the task will fail, otherwise the checksum file is deleted.
@@ -82,10 +85,10 @@ tasks:
         (
           {{- range .INCLUDE_PATTERNS}}
           for path in {{.}}; do
-            test -e "$path"
+            test -e "$path" || exit 1
           done
           {{- end}}
-          diff -q "{{.TMP_CHECKSUM_FILE}}" "{{.CHECKSUM_FILE}}" 2> /dev/null
+          cmp -s "{{.TMP_CHECKSUM_FILE}}" "{{.CHECKSUM_FILE}}"
         ) \
         {{- if eq "true" .FAIL}}
           || false
diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
index 0b50f7a..6cb64e1 100644
--- a/taskfiles/checksum/tests.yaml
+++ b/taskfiles/checksum/tests.yaml
@@ -21,6 +21,9 @@ tasks:
       CHECKSUM_FILE_REF: "{{.CHECKSUM_FILE}}.ref"
       FILE_0: "{{.SRC_DIR}}/0.txt"
       FILE_1: "{{.SRC_DIR}}/1.txt"
+
+      ARCHIVER: >-
+        {{if eq OS "darwin"}}gtar{{else}}tar{{end}}
     cmds:
       - task: "checksum-test-init"
         vars:
@@ -45,7 +48,7 @@ tasks:
         date -r '{{.CHECKSUM_FILE_REF}}'
         cat '{{.CHECKSUM_FILE_REF}}'
       - >-
-        tar
+        {{.ARCHIVER}}
         --create
         --file -
         --group 0
@@ -57,7 +60,7 @@ tasks:
         --wildcards
         "{{.SRC_DIR}}"
       - >-
-        tar
+        {{.ARCHIVER}}
         --create
         --file -
         --group 0

From 2afbc02d1227b7e824a5bd2ff9b7e72646495d27 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Mon, 25 Aug 2025 09:56:29 -0400
Subject: [PATCH 65/97] check ignore_errors later

---
 exports/taskfiles/utils/checksum.yaml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/exports/taskfiles/utils/checksum.yaml b/exports/taskfiles/utils/checksum.yaml
index 358f621..6e489b4 100644
--- a/exports/taskfiles/utils/checksum.yaml
+++ b/exports/taskfiles/utils/checksum.yaml
@@ -12,7 +12,7 @@ tasks:
     desc: "Tries to compute a checksum for the given paths and output it to a file."
     internal: true
     label: "{{.TASK}}-{{.CHECKSUM_FILE}}"
-    # silent: true
+    silent: true
     vars:
       TAR: >-
         {{if eq OS "darwin"}}gtar{{else}}tar{{end}}
@@ -47,7 +47,7 @@ tasks:
         2> /dev/null
         | md5sum > {{.CHECKSUM_FILE}}
     # Ignore errors so that dependent tasks don't fail
-    # ignore_error: true
+    ignore_error: true
 
   # Validates the checksum of the given path include patterns matches the checksum in the given
   # file. If `FAIL` is set to "true" the task will fail, otherwise the checksum file is deleted.

From 4dd002b4832b9da99861b721c17a9e3f88155f6f Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Mon, 25 Aug 2025 10:01:40 -0400
Subject: [PATCH 66/97] bam

---
 exports/taskfiles/utils/checksum.yaml | 17 +++++++++++++++
 taskfiles/checksum/tests.yaml         | 30 +--------------------------
 2 files changed, 18 insertions(+), 29 deletions(-)

diff --git a/exports/taskfiles/utils/checksum.yaml b/exports/taskfiles/utils/checksum.yaml
index 6e489b4..892de6b 100644
--- a/exports/taskfiles/utils/checksum.yaml
+++ b/exports/taskfiles/utils/checksum.yaml
@@ -27,6 +27,23 @@ tasks:
       # input patterns cannot be quoted since they're evaluated by the shell and the results are
       # passed to `tar` as arguments. If the input patterns are passed to `tar` with quotes, the
       # pattern won't be evaluated and will instead be treated literally.
+      - >-
+        {{.TAR}}
+        --create
+        --file -
+        --group 0
+        --mtime "UTC 1970-01-01"
+        --numeric-owner
+        --owner 0
+        --sort name
+        --no-anchored
+        --wildcards
+        {{- range .EXCLUDE_PATTERNS}}
+        --exclude="{{.}}"
+        {{- end}}
+        {{- range .INCLUDE_PATTERNS}}
+        {{.}}
+        {{- end}}
       - >-
         {{.TAR}}
         --create
diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
index 6cb64e1..f78ae70 100644
--- a/taskfiles/checksum/tests.yaml
+++ b/taskfiles/checksum/tests.yaml
@@ -21,9 +21,6 @@ tasks:
       CHECKSUM_FILE_REF: "{{.CHECKSUM_FILE}}.ref"
       FILE_0: "{{.SRC_DIR}}/0.txt"
       FILE_1: "{{.SRC_DIR}}/1.txt"
-
-      ARCHIVER: >-
-        {{if eq OS "darwin"}}gtar{{else}}tar{{end}}
     cmds:
       - task: "checksum-test-init"
         vars:
@@ -47,32 +44,7 @@ tasks:
       - |-
         date -r '{{.CHECKSUM_FILE_REF}}'
         cat '{{.CHECKSUM_FILE_REF}}'
-      - >-
-        {{.ARCHIVER}}
-        --create
-        --file -
-        --group 0
-        --mtime "UTC 1970-01-01"
-        --numeric-owner
-        --owner 0
-        --sort name
-        --no-anchored
-        --wildcards
-        "{{.SRC_DIR}}"
-      - >-
-        {{.ARCHIVER}}
-        --create
-        --file -
-        --group 0
-        --mtime "UTC 1970-01-01"
-        --numeric-owner
-        --owner 0
-        --sort name
-        --no-anchored
-        --wildcards
-        "{{.SRC_DIR}}"
-        2> /dev/null
-        | md5sum
+      - "! cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}' && true"
       - |-
         if cmp '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}'; then
           exit 1

From c72511e4c5ed72d9d31c21e054a6aaf002d71d4b Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Mon, 25 Aug 2025 22:23:13 -0400
Subject: [PATCH 67/97] Improve checksum compute and validate error handling;
 add unit tests.

---
 exports/taskfiles/utils/checksum.yaml | 102 ++++++++++++------
 taskfiles/checksum/tests.yaml         | 150 ++++++++++++++++++++++++++
 taskfiles/tests.yaml                  |   4 +-
 3 files changed, 222 insertions(+), 34 deletions(-)
 create mode 100644 taskfiles/checksum/tests.yaml

diff --git a/exports/taskfiles/utils/checksum.yaml b/exports/taskfiles/utils/checksum.yaml
index e9b5ec7..bdbfa80 100644
--- a/exports/taskfiles/utils/checksum.yaml
+++ b/exports/taskfiles/utils/checksum.yaml
@@ -1,20 +1,27 @@
 version: "3"
 
-set: ["u", "pipefail"]
-shopt: ["globstar"]
-
 tasks:
+  # Compute the checksum of the given path include patterns saving the result to `CHECKSUM_FILE`. A
+  # calling task can set `FAIL` to false if they wish to continue after errors.
+  #
   # @param {string} CHECKSUM_FILE
   # @param {string[]} INCLUDE_PATTERNS Path wildcard patterns to compute the checksum for.
   # @param {string[]} [EXCLUDE_PATTERNS] Path wildcard patterns, relative to any `INCLUDE_PATTERNS`,
   # to exclude from the checksum.
+  # @param {string} [FAIL="true"] If set to "false" the task will not fail.
   compute:
-    desc: "Tries to compute a checksum for the given paths and output it to a file."
     internal: true
     label: "{{.TASK}}-{{.CHECKSUM_FILE}}"
     silent: true
+    vars:
+      FAIL: "{{if eq \"false\" .FAIL}}false{{else}}true{{end}}"
+      TAR: "{{if eq OS \"darwin\"}}gtar{{else}}tar{{end}}"
+      ERR_LOG:
+        sh: mktemp
     requires:
-      vars: ["CHECKSUM_FILE", "INCLUDE_PATTERNS"]
+      vars:
+        - "CHECKSUM_FILE"
+        - "INCLUDE_PATTERNS"
     cmds:
       # We explicitly set `--no-anchored` and `--wildcards` to make the inclusion behaviour match
       # the default exclusion behaviour.
@@ -24,42 +31,60 @@ tasks:
       # input patterns cannot be quoted since they're evaluated by the shell and the results are
       # passed to `tar` as arguments. If the input patterns are passed to `tar` with quotes, the
       # pattern won't be evaluated and will instead be treated literally.
-      - >-
-        tar
-        --create
-        --file -
-        --group 0
-        --mtime "UTC 1970-01-01"
-        --numeric-owner
-        --owner 0
-        --sort name
-        --no-anchored
-        --wildcards
-        {{- range .EXCLUDE_PATTERNS}}
-        --exclude="{{.}}"
-        {{- end}}
-        {{- range .INCLUDE_PATTERNS}}
-        {{.}}
-        {{- end}}
-        2> /dev/null
-        | md5sum > {{.CHECKSUM_FILE}}
-    # Ignore errors so that dependent tasks don't fail
-    ignore_error: true
+      - defer: "rm '{{.ERR_LOG}}'"
+      - |-
+        if ! \
+          {{.TAR}} \
+          --create \
+          --file - \
+          --group 0 \
+          --mtime "UTC 1970-01-01" \
+          --numeric-owner \
+          --owner 0 \
+          --sort name \
+          --no-anchored \
+          --wildcards \
+          {{- range .EXCLUDE_PATTERNS}}
+          --exclude="{{.}}" \
+          {{- end}}
+          {{- range .INCLUDE_PATTERNS}}
+          {{.}} \
+          {{- end}}
+          2> {{.ERR_LOG}} \
+            | md5sum > {{.CHECKSUM_FILE}} \
+        ; then
+          {{- if eq "true" .FAIL}}
+            echo "[{{.TASK}} error] tar failed with:\n$(cat {{.ERR_LOG}})"
+            exit 1
+          {{- else}}
+            exit 0
+          {{- end}}
+        fi
 
+  # Validates the checksum of the given path include patterns matches the checksum in the given
+  # file. If validation fails the checksum file is deleted so that a calling task with the checksum
+  # file in their `generates` field will be reran. A calling task can set `FAIL` to true if they
+  # wish to halt on failure.
+  #
   # @param {string} CHECKSUM_FILE
   # @param {string[]} INCLUDE_PATTERNS Path wildcard patterns to validate the checksum for.
   # @param {string[]} [EXCLUDE_PATTERNS] Path wildcard patterns, relative to any `INCLUDE_PATTERNS`,
   # to exclude from the checksum.
+  # @param {string} [FAIL="false"] If set to "true" the task fails.
   validate:
-    desc: "Validates the checksum of the given directory matches the checksum in the given file, or
-    deletes the checksum file otherwise."
     internal: true
     label: "{{.TASK}}-{{.CHECKSUM_FILE}}"
     silent: true
     vars:
+      FAIL: "{{if eq \"true\" .FAIL}}true{{else}}false{{end}}"
       TMP_CHECKSUM_FILE: "{{.CHECKSUM_FILE}}.tmp"
+
+      ERR_LOG:
+        sh: mktemp
     requires:
-      vars: ["CHECKSUM_FILE", "INCLUDE_PATTERNS"]
+      vars:
+        - "CHECKSUM_FILE"
+        - "INCLUDE_PATTERNS"
     cmds:
       - task: "compute"
         vars:
@@ -68,14 +93,25 @@ tasks:
           EXCLUDE_PATTERNS:
             ref: "default (list) .EXCLUDE_PATTERNS"
           CHECKSUM_FILE: "{{.TMP_CHECKSUM_FILE}}"
+          FAIL: "false"
       - defer: "rm -f '{{.TMP_CHECKSUM_FILE}}'"
-      # Check that all paths exist and the checksum matches; otherwise delete the checksum file.
       - |-
         (
+          {{- $err_log := .ERR_LOG}}
           {{- range .INCLUDE_PATTERNS}}
           for path in {{.}}; do
-            test -e "$path"
+            test -e "$path" || (echo "Include path does not exist: $path" > $err_log; exit 1)
           done
           {{- end}}
-          diff -q "{{.TMP_CHECKSUM_FILE}}" "{{.CHECKSUM_FILE}}" 2> /dev/null
-        ) || rm -f "{{.CHECKSUM_FILE}}"
+          cmp -s "{{.TMP_CHECKSUM_FILE}}" "{{.CHECKSUM_FILE}}" \
+            || (
+              echo "cmp failed for '{{.TMP_CHECKSUM_FILE}}' '{{.CHECKSUM_FILE}}'" > "{{.ERR_LOG}}"
+              exit 1
+            )
+        ) || \
+          {{- if eq "true" .FAIL}}
+            echo "[{{.TASK}} error] failed with:\n$(cat {{.ERR_LOG}})"
+            exit 1
+          {{- else}}
+            rm -f "{{.CHECKSUM_FILE}}"
+          {{- end}}
diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
new file mode 100644
index 0000000..8242cd4
--- /dev/null
+++ b/taskfiles/checksum/tests.yaml
@@ -0,0 +1,150 @@
+version: "3"
+
+includes:
+  checksum:
+    internal: true
+    taskfile: "../../exports/taskfiles/utils/checksum.yaml"
+
+tasks:
+  default:
+    cmds:
+      - task: "checksum-test-rerun"
+      - task: "checksum-test-skip"
+      - task: "checksum-test-update"
+
+  checksum-test-rerun:
+    vars:
+      OUTPUT_DIR: "{{.G_OUTPUT_DIR}}/{{.TASK | replace \":\" \"#\"}}"
+      SRC_DIR: "{{.OUTPUT_DIR}}/src"
+
+      CHECKSUM_FILE: "{{.SRC_DIR}}.md5"
+      CHECKSUM_FILE_REF: "{{.CHECKSUM_FILE}}.ref"
+      FILE_0: "{{.SRC_DIR}}/0.txt"
+      FILE_1: "{{.SRC_DIR}}/1.txt"
+    cmds:
+      - task: "checksum-test-init"
+        vars:
+          OUTPUT_DIR: "{{.OUTPUT_DIR}}"
+      - task: "create-dir-with-checksum"
+        vars:
+          CHECKSUM_FILE: "{{.CHECKSUM_FILE}}"
+          FILE_PATH: "{{.FILE_0}}"
+      - "mv '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}'"
+      - task: "create-dir-with-checksum"
+        vars:
+          CHECKSUM_FILE: "{{.CHECKSUM_FILE}}"
+          FILE_PATH: "{{.FILE_1}}"
+
+      # Test create-dir-with-checksum ran the second time and created a different checksum.
+      - "test ! -e '{{.FILE_0}}'"
+      - "test -e '{{.FILE_1}}'"
+      - |-
+        if ! cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}'; then
+          exit 0
+        else
+          exit 1
+        fi
+
+  checksum-test-skip:
+    vars:
+      OUTPUT_DIR: "{{.G_OUTPUT_DIR}}/{{.TASK | replace \":\" \"#\"}}"
+      SRC_DIR: "{{.OUTPUT_DIR}}/src"
+
+      CHECKSUM_FILE: "{{.SRC_DIR}}.md5"
+      CHECKSUM_MOD_TS: "{{.CHECKSUM_FILE}}-mod-ts.txt"
+      FILE_0: "{{.SRC_DIR}}/0.txt"
+      FILE_1: "{{.SRC_DIR}}/1.txt"
+    cmds:
+      - task: "checksum-test-init"
+        vars:
+          OUTPUT_DIR: "{{.OUTPUT_DIR}}"
+      - task: "create-dir-with-checksum"
+        vars:
+          CHECKSUM_FILE: "{{.CHECKSUM_FILE}}"
+          FILE_PATH: "{{.FILE_0}}"
+      - "date -r '{{.CHECKSUM_FILE}}' > '{{.CHECKSUM_MOD_TS}}'"
+      - task: "create-dir-with-checksum"
+        vars:
+          CHECKSUM_FILE: "{{.CHECKSUM_FILE}}"
+          FILE_PATH: "{{.FILE_1}}"
+
+      # Test create-dir-with-checksum didn't run the second time and the checksum is unmodified.
+      - "test -e '{{.FILE_0}}'"
+      - "test ! -e '{{.FILE_1}}'"
+      - "cmp -s '{{.CHECKSUM_MOD_TS}}' <(date -r '{{.CHECKSUM_FILE}}')"
+
+  checksum-test-update:
+    vars:
+      OUTPUT_DIR: "{{.G_OUTPUT_DIR}}/{{.TASK | replace \":\" \"#\"}}"
+      SRC_DIR: "{{.OUTPUT_DIR}}/src"
+
+      CHECKSUM_FILE: "{{.SRC_DIR}}.md5"
+      CHECKSUM_FILE_REF0: "{{.CHECKSUM_FILE}}.ref0"
+      CHECKSUM_FILE_REF1: "{{.CHECKSUM_FILE}}.ref1"
+      FILE_0: "{{.SRC_DIR}}/0.txt"
+      FILE_1: "{{.SRC_DIR}}/1.txt"
+    cmds:
+      - task: "checksum-test-init"
+        vars:
+          OUTPUT_DIR: "{{.OUTPUT_DIR}}"
+      - task: "create-dir-with-checksum"
+        vars:
+          CHECKSUM_FILE: "{{.CHECKSUM_FILE}}"
+          FILE_PATH: "{{.FILE_0}}"
+      - "cp '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF0}}'"
+
+      - "cat '{{.CHECKSUM_FILE}}' > '{{.FILE_0}}'"
+      - task: "checksum:compute"
+        vars:
+          CHECKSUM_FILE: "{{.CHECKSUM_FILE}}"
+          INCLUDE_PATTERNS: ["{{.SRC_DIR}}"]
+      - "cp '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF1}}'"
+
+      - task: "create-dir-with-checksum"
+        vars:
+          CHECKSUM_FILE: "{{.CHECKSUM_FILE}}"
+          FILE_PATH: "{{.FILE_1}}"
+
+      # Test create-dir-with-checksum didn't run the second time and the updated checksum is
+      # different from the original.
+      - "test -e '{{.FILE_0}}'"
+      - "test ! -e '{{.FILE_1}}'"
+      - "cmp -s '{{.FILE_0}}'  '{{.CHECKSUM_FILE_REF0}}'"
+      - "cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF1}}'"
+      - |-
+        if ! cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF0}}'; then
+          exit 0
+        else
+          exit 1
+        fi
+
+  checksum-test-init:
+    internal: true
+    requires:
+      vars: ["OUTPUT_DIR"]
+    cmds:
+      - "rm -rf '{{.OUTPUT_DIR}}'"
+      - "mkdir -p '{{.OUTPUT_DIR}}'"
+
+  create-dir-with-checksum:
+    internal: true
+    vars:
+      DIR: "{{dir .FILE_PATH}}"
+    requires:
+      vars: ["CHECKSUM_FILE", "FILE_PATH"]
+    sources: ["{{.TASKFILE}}"]
+    generates: ["{{.CHECKSUM_FILE}}"]
+    deps:
+      - task: "checksum:validate"
+        vars:
+          CHECKSUM_FILE: "{{.CHECKSUM_FILE}}"
+          INCLUDE_PATTERNS: ["{{.DIR}}"]
+    cmds:
+      - |-
+        rm -rf "{{.DIR}}"
+        mkdir -p "{{.DIR}}"
+        touch "{{.FILE_PATH}}"
+      - task: "checksum:compute"
+        vars:
+          CHECKSUM_FILE: "{{.CHECKSUM_FILE}}"
+          INCLUDE_PATTERNS: ["{{.DIR}}"]
diff --git a/taskfiles/tests.yaml b/taskfiles/tests.yaml
index 7c99a64..3d2efaf 100644
--- a/taskfiles/tests.yaml
+++ b/taskfiles/tests.yaml
@@ -2,6 +2,7 @@ version: "3"
 
 includes:
   boost: "boost/tests.yaml"
+  checksum: "checksum/tests.yaml"
   remote: "remote/tests.yaml"
   ystdlib-py: "ystdlib-py/tests.yaml"
 
@@ -9,7 +10,8 @@ tasks:
   all:
     internal: true
     cmds:
-      - task: "boost"
+      # - task: "boost"
+      - task: "checksum"
       - task: "remote"
       - task: "ystdlib-py"
 

From 394d45fba4dcc7666e51a2ad33e2dc6e0a576d8f Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Mon, 25 Aug 2025 22:26:41 -0400
Subject: [PATCH 68/97] Fix yaml lint; sanity check

---
 exports/taskfiles/utils/checksum.yaml | 4 ++--
 taskfiles/checksum/tests.yaml         | 4 +---
 2 files changed, 3 insertions(+), 5 deletions(-)

diff --git a/exports/taskfiles/utils/checksum.yaml b/exports/taskfiles/utils/checksum.yaml
index bdbfa80..0d69ad9 100644
--- a/exports/taskfiles/utils/checksum.yaml
+++ b/exports/taskfiles/utils/checksum.yaml
@@ -17,7 +17,7 @@ tasks:
       FAIL: "{{if eq \"false\" .FAIL}}false{{else}}true{{end}}"
       TAR: "{{if eq OS \"darwin\"}}gtar{{else}}tar{{end}}"
       ERR_LOG:
-        sh: mktemp
+        sh: "mktemp"
     requires:
       vars:
         - "CHECKSUM_FILE"
@@ -80,7 +80,7 @@ tasks:
       TMP_CHECKSUM_FILE: "{{.CHECKSUM_FILE}}.tmp"
 
       ERR_LOG:
-        sh: mktemp
+        sh: "mktemp"
     requires:
       vars:
         - "CHECKSUM_FILE"
diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
index 8242cd4..d5d90be 100644
--- a/taskfiles/checksum/tests.yaml
+++ b/taskfiles/checksum/tests.yaml
@@ -112,9 +112,7 @@ tasks:
       - "cmp -s '{{.FILE_0}}'  '{{.CHECKSUM_FILE_REF0}}'"
       - "cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF1}}'"
       - |-
-        if ! cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF0}}'; then
-          exit 0
-        else
+        if cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF0}}'; then
           exit 1
         fi
 

From 3b5a816b218e6cf685a7ede7f1996644097bb76c Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Mon, 25 Aug 2025 22:29:53 -0400
Subject: [PATCH 69/97] one more sanity check

---
 taskfiles/checksum/tests.yaml | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
index d5d90be..f35813f 100644
--- a/taskfiles/checksum/tests.yaml
+++ b/taskfiles/checksum/tests.yaml
@@ -112,9 +112,15 @@ tasks:
       - "cmp -s '{{.FILE_0}}'  '{{.CHECKSUM_FILE_REF0}}'"
       - "cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF1}}'"
       - |-
-        if cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF0}}'; then
+        if ! cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF0}}'; then
+          exit 0
+        else
           exit 1
         fi
+      - |-
+         if ! cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF1}}'; then
+           exit 1
+         fi
 
   checksum-test-init:
     internal: true

From 9c935f9b40f3af30543643ec6bdd3c210299cf19 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Mon, 25 Aug 2025 22:34:29 -0400
Subject: [PATCH 70/97] one more

---
 taskfiles/checksum/tests.yaml | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
index f35813f..d50fd8f 100644
--- a/taskfiles/checksum/tests.yaml
+++ b/taskfiles/checksum/tests.yaml
@@ -112,13 +112,11 @@ tasks:
       - "cmp -s '{{.FILE_0}}'  '{{.CHECKSUM_FILE_REF0}}'"
       - "cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF1}}'"
       - |-
-        if ! cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF0}}'; then
-          exit 0
-        else
+        if (cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF0}}'); then
           exit 1
         fi
       - |-
-         if ! cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF1}}'; then
+         if (! cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF1}}'); then
            exit 1
          fi
 

From 07b88fc11db41505821f5b7c3491ab96a774ef41 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Mon, 25 Aug 2025 22:43:31 -0400
Subject: [PATCH 71/97] last one

---
 taskfiles/checksum/tests.yaml | 15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
index d50fd8f..041fa69 100644
--- a/taskfiles/checksum/tests.yaml
+++ b/taskfiles/checksum/tests.yaml
@@ -41,9 +41,8 @@ tasks:
       - |-
         if ! cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF}}'; then
           exit 0
-        else
-          exit 1
         fi
+        exit 1
 
   checksum-test-skip:
     vars:
@@ -112,13 +111,15 @@ tasks:
       - "cmp -s '{{.FILE_0}}'  '{{.CHECKSUM_FILE_REF0}}'"
       - "cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF1}}'"
       - |-
-        if (cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF0}}'); then
-          exit 1
+        if ! cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF0}}'; then
+          exit 0
         fi
+        exit 1
+      # test
       - |-
-         if (! cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF1}}'); then
-           exit 1
-         fi
+        if ! cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF1}}'; then
+          exit 1
+        fi
 
   checksum-test-init:
     internal: true

From 20802e784739100bb0fcb449b765415ccc4369d9 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Mon, 25 Aug 2025 22:46:05 -0400
Subject: [PATCH 72/97] remove test

---
 taskfiles/checksum/tests.yaml | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
index 041fa69..6986408 100644
--- a/taskfiles/checksum/tests.yaml
+++ b/taskfiles/checksum/tests.yaml
@@ -115,11 +115,6 @@ tasks:
           exit 0
         fi
         exit 1
-      # test
-      - |-
-        if ! cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF1}}'; then
-          exit 1
-        fi
 
   checksum-test-init:
     internal: true

From a2ff6f40c41e3e61ebef5bfdb84fe874cc1d3772 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Mon, 25 Aug 2025 23:12:09 -0400
Subject: [PATCH 73/97] Fix err log.

---
 exports/taskfiles/utils/checksum.yaml | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/exports/taskfiles/utils/checksum.yaml b/exports/taskfiles/utils/checksum.yaml
index 0d69ad9..61d9f38 100644
--- a/exports/taskfiles/utils/checksum.yaml
+++ b/exports/taskfiles/utils/checksum.yaml
@@ -94,13 +94,15 @@ tasks:
             ref: "default (list) .EXCLUDE_PATTERNS"
           CHECKSUM_FILE: "{{.TMP_CHECKSUM_FILE}}"
           FAIL: "false"
-      - defer: "rm -f '{{.TMP_CHECKSUM_FILE}}'"
+      - defer: |-
+          rm -f "{{.TMP_CHECKSUM_FILE}}"
+          rm "{{.ERR_LOG}}"
       - |-
         (
           {{- $err_log := .ERR_LOG}}
           {{- range .INCLUDE_PATTERNS}}
           for path in {{.}}; do
-            test -e "$path" || (echo "Include path does not exist: $path" > $err_log; exit 1)
+            test -e "$path" || (echo "Include path does not exist: $path" > "{{$err_log}}"; exit 1)
           done
           {{- end}}
           cmp -s "{{.TMP_CHECKSUM_FILE}}" "{{.CHECKSUM_FILE}}" \

From 194440e5e26ffb80067e27d47c5603eebe858d78 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Tue, 26 Aug 2025 01:37:43 -0400
Subject: [PATCH 74/97] Drop mktemp due to task bug.

---
 exports/taskfiles/utils/checksum.yaml | 26 ++++++++++++--------------
 1 file changed, 12 insertions(+), 14 deletions(-)

diff --git a/exports/taskfiles/utils/checksum.yaml b/exports/taskfiles/utils/checksum.yaml
index 61d9f38..795aca6 100644
--- a/exports/taskfiles/utils/checksum.yaml
+++ b/exports/taskfiles/utils/checksum.yaml
@@ -16,8 +16,7 @@ tasks:
     vars:
       FAIL: "{{if eq \"false\" .FAIL}}false{{else}}true{{end}}"
       TAR: "{{if eq OS \"darwin\"}}gtar{{else}}tar{{end}}"
-      ERR_LOG:
-        sh: "mktemp"
+      TMP_ERR_LOG: "{{.CHECKSUM_FILE}}.log.tmp"
     requires:
       vars:
         - "CHECKSUM_FILE"
@@ -31,7 +30,7 @@ tasks:
       # input patterns cannot be quoted since they're evaluated by the shell and the results are
       # passed to `tar` as arguments. If the input patterns are passed to `tar` with quotes, the
       # pattern won't be evaluated and will instead be treated literally.
-      - defer: "rm '{{.ERR_LOG}}'"
+      - defer: "rm '{{.TMP_ERR_LOG}}'"
       - |-
         if ! \
           {{.TAR}} \
@@ -50,11 +49,11 @@ tasks:
           {{- range .INCLUDE_PATTERNS}}
           {{.}} \
           {{- end}}
-          2> {{.ERR_LOG}} \
+          2> {{.TMP_ERR_LOG}} \
             | md5sum > {{.CHECKSUM_FILE}} \
         ; then
           {{- if eq "true" .FAIL}}
-            echo "[{{.TASK}} error] tar failed with:\n$(cat {{.ERR_LOG}})"
+            echo "[{{.TASK}} error] tar failed with:\n$(cat {{.TMP_ERR_LOG}})"
             exit 1
           {{- else}}
             exit 0
@@ -78,9 +77,7 @@ tasks:
     vars:
       FAIL: "{{if eq \"true\" .FAIL}}true{{else}}false{{end}}"
       TMP_CHECKSUM_FILE: "{{.CHECKSUM_FILE}}.tmp"
-
-      ERR_LOG:
-        sh: "mktemp"
+      TMP_ERR_LOG: "{{.CHECKSUM_FILE}}.log.tmp"
     requires:
       vars:
         - "CHECKSUM_FILE"
@@ -95,24 +92,25 @@ tasks:
           CHECKSUM_FILE: "{{.TMP_CHECKSUM_FILE}}"
           FAIL: "false"
       - defer: |-
-          rm -f "{{.TMP_CHECKSUM_FILE}}"
-          rm "{{.ERR_LOG}}"
+          rm "{{.TMP_CHECKSUM_FILE}}"
+          rm "{{.TMP_ERR_LOG}}"
       - |-
         (
-          {{- $err_log := .ERR_LOG}}
           {{- range .INCLUDE_PATTERNS}}
           for path in {{.}}; do
-            test -e "$path" || (echo "Include path does not exist: $path" > "{{$err_log}}"; exit 1)
+            test -e "$path" \
+              || (echo "Include path does not exist: $path" > "{{$.TMP_ERR_LOG}}"; exit 1)
           done
           {{- end}}
           cmp -s "{{.TMP_CHECKSUM_FILE}}" "{{.CHECKSUM_FILE}}" \
             || (
-              echo "cmp failed for '{{.TMP_CHECKSUM_FILE}}' '{{.CHECKSUM_FILE}}'" > "{{.ERR_LOG}}"
+              echo "cmp failed for '{{.TMP_CHECKSUM_FILE}}' '{{.CHECKSUM_FILE}}'" \
+                > "{{.TMP_ERR_LOG}}"
               exit 1
             )
         ) || \
           {{- if eq "true" .FAIL}}
-            echo "[{{.TASK}} error] failed with:\n$(cat {{.ERR_LOG}})"
+            echo "[{{.TASK}} error] failed with:\n$(cat {{.TMP_ERR_LOG}})"
             exit 1
           {{- else}}
             rm -f "{{.CHECKSUM_FILE}}"

From 3a92d534e8a032a7d6967fb8688c481869971da0 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Tue, 26 Aug 2025 01:41:25 -0400
Subject: [PATCH 75/97] Add force to rm tmp files.

---
 exports/taskfiles/utils/checksum.yaml | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/exports/taskfiles/utils/checksum.yaml b/exports/taskfiles/utils/checksum.yaml
index 795aca6..4b12abd 100644
--- a/exports/taskfiles/utils/checksum.yaml
+++ b/exports/taskfiles/utils/checksum.yaml
@@ -30,7 +30,7 @@ tasks:
       # input patterns cannot be quoted since they're evaluated by the shell and the results are
       # passed to `tar` as arguments. If the input patterns are passed to `tar` with quotes, the
       # pattern won't be evaluated and will instead be treated literally.
-      - defer: "rm '{{.TMP_ERR_LOG}}'"
+      - defer: "rm -f '{{.TMP_ERR_LOG}}'"
       - |-
         if ! \
           {{.TAR}} \
@@ -92,8 +92,8 @@ tasks:
           CHECKSUM_FILE: "{{.TMP_CHECKSUM_FILE}}"
           FAIL: "false"
       - defer: |-
-          rm "{{.TMP_CHECKSUM_FILE}}"
-          rm "{{.TMP_ERR_LOG}}"
+          rm -f "{{.TMP_CHECKSUM_FILE}}"
+          rm -f "{{.TMP_ERR_LOG}}"
       - |-
         (
           {{- range .INCLUDE_PATTERNS}}

From c31ef2428792ef959e61c0b35bacc8d752a58071 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Tue, 26 Aug 2025 02:15:23 -0400
Subject: [PATCH 76/97] sub shells

---
 exports/taskfiles/utils/checksum.yaml | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/exports/taskfiles/utils/checksum.yaml b/exports/taskfiles/utils/checksum.yaml
index 4b12abd..74de95c 100644
--- a/exports/taskfiles/utils/checksum.yaml
+++ b/exports/taskfiles/utils/checksum.yaml
@@ -108,10 +108,11 @@ tasks:
                 > "{{.TMP_ERR_LOG}}"
               exit 1
             )
-        ) || \
+        ) || ( \
           {{- if eq "true" .FAIL}}
             echo "[{{.TASK}} error] failed with:\n$(cat {{.TMP_ERR_LOG}})"
             exit 1
           {{- else}}
             rm -f "{{.CHECKSUM_FILE}}"
           {{- end}}
+          )

From 07fd3e4cbc7759424cff8421061caa1eb4142f81 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Tue, 26 Aug 2025 02:25:29 -0400
Subject: [PATCH 77/97] Update readme with macos requirements.

---
 README.md | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/README.md b/README.md
index a49d797..09613a3 100644
--- a/README.md
+++ b/README.md
@@ -12,6 +12,14 @@ Before you submit a pull request, ensure you follow the testing and linting inst
 * [Task] 3.40 or higher
 * [uv] 0.7.10 or higher
 
+### MacOS
+
+The exported tasks use GNU utilities that are not always pre-installed on MacOS. You may need to
+install the following brew packages:
+
+* [coreutils]
+* [gnu-tar]
+
 ## Testing
 
 To run all tests:
@@ -42,5 +50,7 @@ To clean up any generated files:
 task clean
 ```
 
+[coreutils]: https://formulae.brew.sh/formula/coreutils
+[gnu-tar]: https://formulae.brew.sh/formula/gnu-tar
 [Task]: https://taskfile.dev/
 [uv]: https://docs.astral.sh/uv

From 4ec658897d6dfffa7924c13d62c063ab8289171d Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Tue, 26 Aug 2025 12:49:38 -0400
Subject: [PATCH 78/97] Tweak default list handling.

---
 exports/taskfiles/utils/checksum.yaml | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/exports/taskfiles/utils/checksum.yaml b/exports/taskfiles/utils/checksum.yaml
index 74de95c..ef1376f 100644
--- a/exports/taskfiles/utils/checksum.yaml
+++ b/exports/taskfiles/utils/checksum.yaml
@@ -14,7 +14,10 @@ tasks:
     label: "{{.TASK}}-{{.CHECKSUM_FILE}}"
     silent: true
     vars:
+      EXCLUDE_PATTERNS:
+        ref: "default (list) .EXCLUDE_PATTERNS"
       FAIL: "{{if eq \"false\" .FAIL}}false{{else}}true{{end}}"
+
       TAR: "{{if eq OS \"darwin\"}}gtar{{else}}tar{{end}}"
       TMP_ERR_LOG: "{{.CHECKSUM_FILE}}.log.tmp"
     requires:
@@ -85,11 +88,11 @@ tasks:
     cmds:
       - task: "compute"
         vars:
+          CHECKSUM_FILE: "{{.TMP_CHECKSUM_FILE}}"
           INCLUDE_PATTERNS:
             ref: ".INCLUDE_PATTERNS"
           EXCLUDE_PATTERNS:
-            ref: "default (list) .EXCLUDE_PATTERNS"
-          CHECKSUM_FILE: "{{.TMP_CHECKSUM_FILE}}"
+            ref: ".EXCLUDE_PATTERNS"
           FAIL: "false"
       - defer: |-
           rm -f "{{.TMP_CHECKSUM_FILE}}"

From 93a6296679b12e4b169a2fb9308e87e611680db8 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Tue, 26 Aug 2025 12:52:44 -0400
Subject: [PATCH 79/97] readme tweak

---
 README.md | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/README.md b/README.md
index 09613a3..2d39429 100644
--- a/README.md
+++ b/README.md
@@ -12,13 +12,13 @@ Before you submit a pull request, ensure you follow the testing and linting inst
 * [Task] 3.40 or higher
 * [uv] 0.7.10 or higher
 
-### MacOS
+### macOS
 
-The exported tasks use GNU utilities that are not always pre-installed on MacOS. You may need to
-install the following brew packages:
+The exported tasks use GNU utilities that are not always pre-installed on macOS. You may need to
+install the following brew packages and add their executables to your PATH:
 
-* [coreutils]
-* [gnu-tar]
+* [coreutils]\: `md5sum`
+* [gnu-tar]\: `gtar`
 
 ## Testing
 

From 5a230b96fdf040364b96a748892e7ec8bca34067 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Tue, 26 Aug 2025 13:01:29 -0400
Subject: [PATCH 80/97] doc string tweaks

---
 exports/taskfiles/utils/checksum.yaml | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/exports/taskfiles/utils/checksum.yaml b/exports/taskfiles/utils/checksum.yaml
index ef1376f..86199ee 100644
--- a/exports/taskfiles/utils/checksum.yaml
+++ b/exports/taskfiles/utils/checksum.yaml
@@ -1,8 +1,10 @@
 version: "3"
 
 tasks:
-  # Compute the checksum of the given path include patterns saving the result to `CHECKSUM_FILE`. A
-  # calling task can set `FAIL` to false if they wish to continue after errors.
+
+  # Compute the checksum of the given path include/exclude patterns, saving the result to
+  # `CHECKSUM_FILE`. The calling task can set `FAIL` to "false" if they wish to continue if checksum
+  # computation fails.
   #
   # @param {string} CHECKSUM_FILE
   # @param {string[]} INCLUDE_PATTERNS Path wildcard patterns to compute the checksum for.
@@ -63,10 +65,10 @@ tasks:
           {{- end}}
         fi
 
-  # Validates the checksum of the given path include patterns matches the checksum in the given
-  # file. If validation fails the checksum file is deleted so that a calling task with the checksum
-  # file in their `generates` field will be reran. A calling task can set `FAIL` to true if they
-  # wish to halt on failure.
+  # Validates the checksum of the given path include/exclude patterns matches the checksum in the
+  # given file. If validation fails the checksum file is deleted, but the task succeeds so that the
+  # calling task will be reran (by using the checksum file in their `generates` field). The calling
+  # task can set `FAIL` to "true" if they wish for this task to fail if validation fails.
   #
   # @param {string} CHECKSUM_FILE
   # @param {string[]} INCLUDE_PATTERNS Path wildcard patterns to validate the checksum for.

From 01280e1f8436855bf2222866b5cb49fb80c5349d Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Tue, 26 Aug 2025 15:44:59 -0400
Subject: [PATCH 81/97] fix sub shell and indentation.

---
 exports/taskfiles/utils/checksum.yaml | 77 +++++++++++++++------------
 1 file changed, 42 insertions(+), 35 deletions(-)

diff --git a/exports/taskfiles/utils/checksum.yaml b/exports/taskfiles/utils/checksum.yaml
index 86199ee..d649696 100644
--- a/exports/taskfiles/utils/checksum.yaml
+++ b/exports/taskfiles/utils/checksum.yaml
@@ -38,27 +38,28 @@ tasks:
       - defer: "rm -f '{{.TMP_ERR_LOG}}'"
       - |-
         if ! \
-          {{.TAR}} \
-          --create \
-          --file - \
-          --group 0 \
-          --mtime "UTC 1970-01-01" \
-          --numeric-owner \
-          --owner 0 \
-          --sort name \
-          --no-anchored \
-          --wildcards \
-          {{- range .EXCLUDE_PATTERNS}}
-          --exclude="{{.}}" \
-          {{- end}}
-          {{- range .INCLUDE_PATTERNS}}
-          {{.}} \
-          {{- end}}
-          2> {{.TMP_ERR_LOG}} \
-            | md5sum > {{.CHECKSUM_FILE}} \
+            {{.TAR}} \
+            --create \
+            --file - \
+            --group 0 \
+            --mtime "UTC 1970-01-01" \
+            --numeric-owner \
+            --owner 0 \
+            --sort name \
+            --no-anchored \
+            --wildcards \
+            {{- range .EXCLUDE_PATTERNS}}
+            --exclude="{{.}}" \
+            {{- end}}
+            {{- range .INCLUDE_PATTERNS}}
+            {{.}} \
+            {{- end}}
+            2> "{{.TMP_ERR_LOG}}" \
+                | md5sum > "{{.CHECKSUM_FILE}}" \
         ; then
+          rm "{{.CHECKSUM_FILE}}"
           {{- if eq "true" .FAIL}}
-            echo "[{{.TASK}} error] tar failed with:\n$(cat {{.TMP_ERR_LOG}})"
+            printf "[{{.TASK}} error] failed with:\n%s\n" "$(cat {{.TMP_ERR_LOG}})"
             exit 1
           {{- else}}
             exit 0
@@ -102,22 +103,28 @@ tasks:
       - |-
         (
           {{- range .INCLUDE_PATTERNS}}
-          for path in {{.}}; do
-            test -e "$path" \
-              || (echo "Include path does not exist: $path" > "{{$.TMP_ERR_LOG}}"; exit 1)
-          done
+            for path in {{.}}; do
+              test -e "${path}" \
+                  || (
+                    echo "Include path does not exist: ${path}" > "{{$.TMP_ERR_LOG}}"
+                    exit 1
+                  )
+            done && \
           {{- end}}
-          cmp -s "{{.TMP_CHECKSUM_FILE}}" "{{.CHECKSUM_FILE}}" \
+              (
+                cmp -s "{{.TMP_CHECKSUM_FILE}}" "{{.CHECKSUM_FILE}}" \
+                || (
+                  echo "cmp failed for '{{.TMP_CHECKSUM_FILE}}' '{{.CHECKSUM_FILE}}'" \
+                    > "{{.TMP_ERR_LOG}}"
+                  exit 1
+                  )
+              )
+        ) \
             || (
-              echo "cmp failed for '{{.TMP_CHECKSUM_FILE}}' '{{.CHECKSUM_FILE}}'" \
-                > "{{.TMP_ERR_LOG}}"
-              exit 1
+              {{- if eq "true" .FAIL}}
+                printf "[{{.TASK}} error] failed with:\n%s\n" "$(cat {{.TMP_ERR_LOG}})"
+                exit 1
+              {{- else}}
+                rm -f "{{.CHECKSUM_FILE}}"
+              {{- end}}
             )
-        ) || ( \
-          {{- if eq "true" .FAIL}}
-            echo "[{{.TASK}} error] failed with:\n$(cat {{.TMP_ERR_LOG}})"
-            exit 1
-          {{- else}}
-            rm -f "{{.CHECKSUM_FILE}}"
-          {{- end}}
-          )

From b6df4171338b3a9a11ccf12d7632e54535fe4254 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Tue, 26 Aug 2025 15:57:54 -0400
Subject: [PATCH 82/97] Add -f when removing checksum on failed compute.

---
 exports/taskfiles/utils/checksum.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/exports/taskfiles/utils/checksum.yaml b/exports/taskfiles/utils/checksum.yaml
index d649696..950f600 100644
--- a/exports/taskfiles/utils/checksum.yaml
+++ b/exports/taskfiles/utils/checksum.yaml
@@ -57,7 +57,7 @@ tasks:
             2> "{{.TMP_ERR_LOG}}" \
                 | md5sum > "{{.CHECKSUM_FILE}}" \
         ; then
-          rm "{{.CHECKSUM_FILE}}"
+          rm -f "{{.CHECKSUM_FILE}}"
           {{- if eq "true" .FAIL}}
             printf "[{{.TASK}} error] failed with:\n%s\n" "$(cat {{.TMP_ERR_LOG}})"
             exit 1

From fbe8a72c8e523180dc818c6fc145c5ffd2036438 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Mon, 22 Sep 2025 09:57:35 -0400
Subject: [PATCH 83/97] Undo testing comment.

---
 taskfiles/tests.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/taskfiles/tests.yaml b/taskfiles/tests.yaml
index 3d2efaf..84626f9 100644
--- a/taskfiles/tests.yaml
+++ b/taskfiles/tests.yaml
@@ -10,7 +10,7 @@ tasks:
   all:
     internal: true
     cmds:
-      # - task: "boost"
+      - task: "boost"
       - task: "checksum"
       - task: "remote"
       - task: "ystdlib-py"

From 8534c248e86584733e770ff1e4e231aae4884386 Mon Sep 17 00:00:00 2001
From: davidlion <davidlion2@protonmail.com>
Date: Wed, 15 Oct 2025 10:05:54 -0400
Subject: [PATCH 84/97] Apply suggestions from code review.

Co-authored-by: Bingran Hu <bingran.hu@yscope.com>
---
 exports/taskfiles/utils/checksum.yaml | 15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

diff --git a/exports/taskfiles/utils/checksum.yaml b/exports/taskfiles/utils/checksum.yaml
index 950f600..ebcb571 100644
--- a/exports/taskfiles/utils/checksum.yaml
+++ b/exports/taskfiles/utils/checksum.yaml
@@ -20,7 +20,7 @@ tasks:
         ref: "default (list) .EXCLUDE_PATTERNS"
       FAIL: "{{if eq \"false\" .FAIL}}false{{else}}true{{end}}"
 
-      TAR: "{{if eq OS \"darwin\"}}gtar{{else}}tar{{end}}"
+      ARCHIVER: "{{if eq OS \"darwin\"}}gtar{{else}}tar{{end}}"
       TMP_ERR_LOG: "{{.CHECKSUM_FILE}}.log.tmp"
     requires:
       vars:
@@ -38,7 +38,7 @@ tasks:
       - defer: "rm -f '{{.TMP_ERR_LOG}}'"
       - |-
         if ! \
-            {{.TAR}} \
+            {{.ARCHIVER}} \
             --create \
             --file - \
             --group 0 \
@@ -66,16 +66,17 @@ tasks:
           {{- end}}
         fi
 
-  # Validates the checksum of the given path include/exclude patterns matches the checksum in the
-  # given file. If validation fails the checksum file is deleted, but the task succeeds so that the
-  # calling task will be reran (by using the checksum file in their `generates` field). The calling
-  # task can set `FAIL` to "true" if they wish for this task to fail if validation fails.
+  # Validates that the checksum computed from the given include/exclude path patterns matches the
+  # reference checksum stored in the given file. If validation fails, the checksum file is deleted,
+  # but the task succeeds so dependent tasks that list the checksum file under `generates` will
+  # rerun automatically. The calling task can set `FAIL` to "true" to make this task fail when the
+  # validation is expected to succeed.
   #
   # @param {string} CHECKSUM_FILE
   # @param {string[]} INCLUDE_PATTERNS Path wildcard patterns to validate the checksum for.
   # @param {string[]} [EXCLUDE_PATTERNS] Path wildcard patterns, relative to any `INCLUDE_PATTERNS`,
   # to exclude from the checksum.
-  # @param {string} [FAIL="false"] If set to "true" the task fails.
+  # @param {string} [FAIL="false"] If set to "true", the task fails when checksums mismatch.
   validate:
     internal: true
     label: "{{.TASK}}-{{.CHECKSUM_FILE}}"

From bbb32bc21b900bff45e5fbb755f9e53401ed9052 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Tue, 28 Oct 2025 01:00:08 -0400
Subject: [PATCH 85/97] Add individual checksum task to tests.

---
 taskfiles/tests.yaml | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/taskfiles/tests.yaml b/taskfiles/tests.yaml
index 84626f9..a303a09 100644
--- a/taskfiles/tests.yaml
+++ b/taskfiles/tests.yaml
@@ -19,6 +19,10 @@ tasks:
     cmds:
       - task: "boost:test"
 
+  checksum:
+    cmds:
+      - task: "checksum:default"
+
   remote:
     cmds:
       - task: "remote:default"

From 3871d7d91e7c4356d81052b178e013e01f6f036e Mon Sep 17 00:00:00 2001
From: davidlion <davidlion2@protonmail.com>
Date: Fri, 14 Nov 2025 09:01:29 -0500
Subject: [PATCH 86/97] Apply suggestions from code review.

Co-authored-by: Bingran Hu <bingran.hu@yscope.com>
Co-authored-by: Junhao Liao <junhao@junhao.ca>
---
 exports/taskfiles/utils/checksum.yaml | 78 +++++++++++++--------------
 taskfiles/checksum/tests.yaml         |  2 +-
 2 files changed, 40 insertions(+), 40 deletions(-)

diff --git a/exports/taskfiles/utils/checksum.yaml b/exports/taskfiles/utils/checksum.yaml
index b2e4a4f..c53f3c7 100644
--- a/exports/taskfiles/utils/checksum.yaml
+++ b/exports/taskfiles/utils/checksum.yaml
@@ -10,7 +10,7 @@ tasks:
   # @param {string[]} INCLUDE_PATTERNS Path wildcard patterns to compute the checksum for.
   # @param {string[]} [EXCLUDE_PATTERNS] Path wildcard patterns, relative to any `INCLUDE_PATTERNS`,
   # to exclude from the checksum.
-  # @param {string} [FAIL="true"] If set to "false" the task will not fail.
+  # @param {string} [FAIL="true"] If set to "false", the task will not fail.
   compute:
     internal: true
     label: "{{.TASK}}-{{.CHECKSUM_FILE}}"
@@ -39,28 +39,28 @@ tasks:
       - defer: "rm -f '{{.TMP_ERR_LOG}}'"
       - |-
         if ! \
-            {{.ARCHIVER}} \
-            --create \
-            --file - \
-            --group 0 \
-            --mtime "UTC 1970-01-01" \
-            --numeric-owner \
-            --owner 0 \
-            --sort name \
-            --no-anchored \
-            --wildcards \
-            {{- range .EXCLUDE_PATTERNS}}
-            --exclude="{{.}}" \
-            {{- end}}
-            {{- range .INCLUDE_PATTERNS}}
-            {{.}} \
-            {{- end}}
-            2> "{{.TMP_ERR_LOG}}" \
-                | md5sum > "{{.CHECKSUM_FILE}}" \
+          {{.ARCHIVER}} \
+          --create \
+          --file - \
+          --group 0 \
+          --mtime "UTC 1970-01-01" \
+          --numeric-owner \
+          --owner 0 \
+          --sort name \
+          --no-anchored \
+          --wildcards \
+          {{- range .EXCLUDE_PATTERNS}}
+          --exclude="{{.}}" \
+          {{- end}}
+          {{- range .INCLUDE_PATTERNS}}
+          {{.}} \
+          {{- end}}
+          2> "{{.TMP_ERR_LOG}}" \
+            | md5sum > "{{.CHECKSUM_FILE}}" \
         ; then
           rm -f "{{.CHECKSUM_FILE}}"
           {{- if eq "true" .FAIL}}
-            printf "[{{.TASK}} error] failed with:\n%s\n" "$(cat {{.TMP_ERR_LOG}})"
+            printf "[{{.TASK}} error] failed with:\n%s\n" "$(cat '{{.TMP_ERR_LOG}}')"
             exit 1
           {{- else}}
             exit 0
@@ -107,26 +107,26 @@ tasks:
           {{- range .INCLUDE_PATTERNS}}
             for path in {{.}}; do
               test -e "${path}" \
-                  || (
-                    echo "Include path does not exist: ${path}" > "{{$.TMP_ERR_LOG}}"
-                    exit 1
-                  )
-            done && \
-          {{- end}}
-              (
-                cmp -s "{{.TMP_CHECKSUM_FILE}}" "{{.CHECKSUM_FILE}}" \
                 || (
-                  echo "cmp failed for '{{.TMP_CHECKSUM_FILE}}' '{{.CHECKSUM_FILE}}'" \
-                    > "{{.TMP_ERR_LOG}}"
+                  echo "Include path does not exist: ${path}" > "{{$.TMP_ERR_LOG}}"
                   exit 1
-                  )
-              )
-        ) \
-            || (
-              {{- if eq "true" .FAIL}}
-                printf "[{{.TASK}} error] failed with:\n%s\n" "$(cat {{.TMP_ERR_LOG}})"
+                )
+            done && \
+          {{- end}}
+            (
+              cmp -s "{{.TMP_CHECKSUM_FILE}}" "{{.CHECKSUM_FILE}}" \
+              || (
+                echo "cmp failed for '{{.TMP_CHECKSUM_FILE}}' '{{.CHECKSUM_FILE}}'" \
+                  > "{{.TMP_ERR_LOG}}"
                 exit 1
-              {{- else}}
-                rm -f "{{.CHECKSUM_FILE}}"
-              {{- end}}
+                )
             )
+        ) \
+          || (
+            {{- if eq "true" .FAIL}}
+              printf "[{{.TASK}} error] failed with:\n%s\n" "$(cat {{.TMP_ERR_LOG}})"
+              exit 1
+            {{- else}}
+              rm -f "{{.CHECKSUM_FILE}}"
+            {{- end}}
+          )
diff --git a/taskfiles/checksum/tests.yaml b/taskfiles/checksum/tests.yaml
index 6986408..a3795c0 100644
--- a/taskfiles/checksum/tests.yaml
+++ b/taskfiles/checksum/tests.yaml
@@ -108,7 +108,7 @@ tasks:
       # different from the original.
       - "test -e '{{.FILE_0}}'"
       - "test ! -e '{{.FILE_1}}'"
-      - "cmp -s '{{.FILE_0}}'  '{{.CHECKSUM_FILE_REF0}}'"
+      - "cmp -s '{{.FILE_0}}' '{{.CHECKSUM_FILE_REF0}}'"
       - "cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF1}}'"
       - |-
         if ! cmp -s '{{.CHECKSUM_FILE}}' '{{.CHECKSUM_FILE_REF0}}'; then

From d07138ebfc4c0b7e59745c2b1210a31ec65d925d Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Fri, 14 Nov 2025 09:18:35 -0500
Subject: [PATCH 87/97] Address review comments and tweak if statements.

---
 exports/taskfiles/utils/checksum.yaml | 29 ++++++++++++---------------
 1 file changed, 13 insertions(+), 16 deletions(-)

diff --git a/exports/taskfiles/utils/checksum.yaml b/exports/taskfiles/utils/checksum.yaml
index c53f3c7..d0a9d95 100644
--- a/exports/taskfiles/utils/checksum.yaml
+++ b/exports/taskfiles/utils/checksum.yaml
@@ -1,16 +1,15 @@
 version: "3"
 
 tasks:
-
   # Compute the checksum of the given path include/exclude patterns, saving the result to
-  # `CHECKSUM_FILE`. The calling task can set `FAIL` to "false" if they wish to continue if checksum
-  # computation fails.
+  # `CHECKSUM_FILE`. The calling task can set `IGNORE_ERROR` to "false" if they wish to continue if
+  # checksum computation fails.
   #
   # @param {string} CHECKSUM_FILE
   # @param {string[]} INCLUDE_PATTERNS Path wildcard patterns to compute the checksum for.
   # @param {string[]} [EXCLUDE_PATTERNS] Path wildcard patterns, relative to any `INCLUDE_PATTERNS`,
   # to exclude from the checksum.
-  # @param {string} [FAIL="true"] If set to "false", the task will not fail.
+  # @param {string} [IGNORE_ERROR="false"] If set to "true", the task will not fail on error.
   compute:
     internal: true
     label: "{{.TASK}}-{{.CHECKSUM_FILE}}"
@@ -18,7 +17,7 @@ tasks:
     vars:
       EXCLUDE_PATTERNS:
         ref: "default (list) .EXCLUDE_PATTERNS"
-      FAIL: "{{if eq \"false\" .FAIL}}false{{else}}true{{end}}"
+      IGNORE_ERROR: "{{if eq \"true\" .IGNORE_ERROR}}true{{else}}false{{end}}"
 
       ARCHIVER: "{{if eq OS \"darwin\"}}gtar{{else}}tar{{end}}"
       TMP_ERR_LOG: "{{.CHECKSUM_FILE}}.log.tmp"
@@ -59,31 +58,30 @@ tasks:
             | md5sum > "{{.CHECKSUM_FILE}}" \
         ; then
           rm -f "{{.CHECKSUM_FILE}}"
-          {{- if eq "true" .FAIL}}
+          {{- if eq "false" .IGNORE_ERROR}}
             printf "[{{.TASK}} error] failed with:\n%s\n" "$(cat '{{.TMP_ERR_LOG}}')"
             exit 1
-          {{- else}}
-            exit 0
           {{- end}}
         fi
 
   # Validates that the checksum computed from the given include/exclude path patterns matches the
   # reference checksum stored in the given file. If validation fails, the checksum file is deleted,
   # but the task succeeds so dependent tasks that list the checksum file under `generates` will
-  # rerun automatically. The calling task can set `FAIL` to "true" to make this task fail when the
-  # validation is expected to succeed.
+  # rerun automatically. The calling task can set `FAIL_ON_ERROR` to "true" to make this task fail
+  # when the validation is expected to succeed.
   #
   # @param {string} CHECKSUM_FILE
   # @param {string[]} INCLUDE_PATTERNS Path wildcard patterns to validate the checksum for.
   # @param {string[]} [EXCLUDE_PATTERNS] Path wildcard patterns, relative to any `INCLUDE_PATTERNS`,
   # to exclude from the checksum.
-  # @param {string} [FAIL="false"] If set to "true", the task fails when checksums mismatch.
+  # @param {string} [FAIL_ON_ERROR="false"] If set to "true", the task fails when checksums
+  # mismatch.
   validate:
     internal: true
     label: "{{.TASK}}-{{.CHECKSUM_FILE}}"
     silent: true
     vars:
-      FAIL: "{{if eq \"true\" .FAIL}}true{{else}}false{{end}}"
+      FAIL_ON_ERROR: "{{if eq \"true\" .FAIL_ON_ERROR}}true{{else}}false{{end}}"
       TMP_CHECKSUM_FILE: "{{.CHECKSUM_FILE}}.tmp"
       TMP_ERR_LOG: "{{.CHECKSUM_FILE}}.log.tmp"
     requires:
@@ -98,7 +96,7 @@ tasks:
             ref: ".INCLUDE_PATTERNS"
           EXCLUDE_PATTERNS:
             ref: ".EXCLUDE_PATTERNS"
-          FAIL: "false"
+          IGNORE_ERROR: "true"
       - defer: |-
           rm -f "{{.TMP_CHECKSUM_FILE}}"
           rm -f "{{.TMP_ERR_LOG}}"
@@ -123,10 +121,9 @@ tasks:
             )
         ) \
           || (
-            {{- if eq "true" .FAIL}}
+            {{- if eq "true" .FAIL_ON_ERROR}}
               printf "[{{.TASK}} error] failed with:\n%s\n" "$(cat {{.TMP_ERR_LOG}})"
               exit 1
-            {{- else}}
-              rm -f "{{.CHECKSUM_FILE}}"
             {{- end}}
+            rm -f "{{.CHECKSUM_FILE}}"
           )

From 95f680a60fd74129c7fcbd4422600a8d51c469ad Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Fri, 14 Nov 2025 09:37:14 -0500
Subject: [PATCH 88/97] Revert workflow concurrency test.

---
 .github/workflows/unit-tests.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/unit-tests.yaml b/.github/workflows/unit-tests.yaml
index aabe8fa..cce541c 100644
--- a/.github/workflows/unit-tests.yaml
+++ b/.github/workflows/unit-tests.yaml
@@ -39,4 +39,4 @@ jobs:
         run: "curl --fail --location --silent --show-error https://astral.sh/uv/install.sh | sh"
 
       - name: "Run unit tests"
-        run: "task test --concurrency 1 --verbose"
+        run: "task test"

From 8363fc4f828a0a3558962fde7d6c15aabb71aa7c Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Fri, 14 Nov 2025 09:45:07 -0500
Subject: [PATCH 89/97] Add pipefail note to compute.

---
 exports/taskfiles/utils/checksum.yaml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/exports/taskfiles/utils/checksum.yaml b/exports/taskfiles/utils/checksum.yaml
index d0a9d95..0d5827b 100644
--- a/exports/taskfiles/utils/checksum.yaml
+++ b/exports/taskfiles/utils/checksum.yaml
@@ -5,6 +5,9 @@ tasks:
   # `CHECKSUM_FILE`. The calling task can set `IGNORE_ERROR` to "false" if they wish to continue if
   # checksum computation fails.
   #
+  # Note that using this task without setting `pipefail` in the root taskfile will cause `tar`
+  # failures to be ignored.
+  #
   # @param {string} CHECKSUM_FILE
   # @param {string[]} INCLUDE_PATTERNS Path wildcard patterns to compute the checksum for.
   # @param {string[]} [EXCLUDE_PATTERNS] Path wildcard patterns, relative to any `INCLUDE_PATTERNS`,

From 3bd67a05d257263b69af92f83b415bd10ad4d76f Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Fri, 14 Nov 2025 10:10:59 -0500
Subject: [PATCH 90/97] Fix coderabbit nits.

---
 exports/taskfiles/utils/checksum.yaml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/exports/taskfiles/utils/checksum.yaml b/exports/taskfiles/utils/checksum.yaml
index 0d5827b..487710d 100644
--- a/exports/taskfiles/utils/checksum.yaml
+++ b/exports/taskfiles/utils/checksum.yaml
@@ -2,7 +2,7 @@ version: "3"
 
 tasks:
   # Compute the checksum of the given path include/exclude patterns, saving the result to
-  # `CHECKSUM_FILE`. The calling task can set `IGNORE_ERROR` to "false" if they wish to continue if
+  # `CHECKSUM_FILE`. The calling task can set `IGNORE_ERROR` to "true" if they wish to continue if
   # checksum computation fails.
   #
   # Note that using this task without setting `pipefail` in the root taskfile will cause `tar`
@@ -125,7 +125,7 @@ tasks:
         ) \
           || (
             {{- if eq "true" .FAIL_ON_ERROR}}
-              printf "[{{.TASK}} error] failed with:\n%s\n" "$(cat {{.TMP_ERR_LOG}})"
+              printf "[{{.TASK}} error] failed with:\n%s\n" "$(cat '{{.TMP_ERR_LOG}}')"
               exit 1
             {{- end}}
             rm -f "{{.CHECKSUM_FILE}}"

From 51a1547a2fd08588c9d74f844e4a98f0d2fb9923 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Mon, 17 Nov 2025 10:14:41 -0500
Subject: [PATCH 91/97] Update doc strings with latest and greatest ideas.

---
 exports/taskfiles/utils/boost.yaml | 20 ++++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/exports/taskfiles/utils/boost.yaml b/exports/taskfiles/utils/boost.yaml
index fc100cf..4a29614 100644
--- a/exports/taskfiles/utils/boost.yaml
+++ b/exports/taskfiles/utils/boost.yaml
@@ -14,7 +14,7 @@ tasks:
   # @param {string} SOURCE_DIR Project source directory.
   # @param {string[]} TARGETS Target libraries to build.
   # @param {string} [CHECKSUM_FILE={{.SOURCE_DIR}}.md5] Checksum file path for `SOURCE_DIR`.
-  # @param {string[]} [EXTRA_ARGS] Any additional arguments to pass to the generate command.
+  # @param {string[]} [EXTRA_ARGS=[]] Any additional arguments to pass to the generate command.
   generate:
     internal: true
     label: "{{.TASK}}:{{.SOURCE_DIR}}"
@@ -70,10 +70,10 @@ tasks:
   # @param {string} [SOURCE_CHECKSUM_FILE={{.SOURCE_DIR}}.md5] Checksum file path for `SOURCE_DIR`.
   #
   # Build command parameters
-  # @param {int} [JOBS] The maximum number of concurrent processes to use when building. If
-  # omitted, the b2 default number is used. Before 1.76.0, the number was 1. Since 1.76.0, the
+  # @param {int} [JOBS=0] The maximum number of concurrent processes to use when building. If 0, the
+  # b2 flag is ommitted and the default is used. Before 1.76.0, the number was 1. Since 1.76.0, the
   # default is the number of cores.
-  # @param {string[]} [EXTRA_ARGS] Any additional arguments to pass to the build command.
+  # @param {string[]} [EXTRA_ARGS=[]] Any additional arguments to pass to the build command.
   build-and-install:
     internal: true
     label: "{{.TASK}}:{{.BUILD_DIR}}-{{.INSTALL_PREFIX}}"
@@ -149,16 +149,16 @@ tasks:
   # @param {string} TAR_SHA256 Content hash to verify the downloaded tar file against.
   # @param {string} TAR_URL URL of the tar file to download.
   # @param {string} WORK_DIR Directory in which to store the source, build, and install directories.
-  # @param {string} [CMAKE_SETTINGS_DIR] If set, the directory where the project's CMake settings
+  # @param {string} [CMAKE_SETTINGS_DIR=""] If set, the directory where the project's CMake settings
   # file should be stored.
   #
   # Boost parameters
   # @param {string[]} TARGETS Target libraries to build.
-  # @param {string[]} [BUILD_AND_INSTALL_ARGS] Any additional arguments to pass to boost's build and
-  # install command.
-  # @param {string[]} [GENERATE_ARGS] Any additional arguments to pass to the generate command.
-  # @param {int} [JOBS] The maximum number of concurrent processes to use when building. If
-  # omitted, the b2 default number is used. Before 1.76.0, the number was 1. Since 1.76.0, the
+  # @param {string[]} [BUILD_AND_INSTALL_ARGS=[]] Any additional arguments to pass to boost's build
+  # and install command.
+  # @param {string[]} [GENERATE_ARGS=[]] Any additional arguments to pass to the generate command.
+  # @param {int} [JOBS=0] The maximum number of concurrent processes to use when building. If 0, the
+  # b2 flag is ommitted and the default is used. Before 1.76.0, the number was 1. Since 1.76.0, the
   # default is the number of cores.
   download-and-install:
     internal: true

From d9efd119a91162407db26b5646d2e23b4491f50f Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Mon, 17 Nov 2025 10:24:20 -0500
Subject: [PATCH 92/97] Change SOURCE_DIR to EXTRACTION to be consistent.

---
 exports/taskfiles/utils/boost.yaml | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/exports/taskfiles/utils/boost.yaml b/exports/taskfiles/utils/boost.yaml
index 4a29614..3e6dea9 100644
--- a/exports/taskfiles/utils/boost.yaml
+++ b/exports/taskfiles/utils/boost.yaml
@@ -166,8 +166,8 @@ tasks:
     vars:
       # Directory parameters
       BUILD_DIR: "{{.WORK_DIR}}/boost-build"
+      EXTRACTION_DIR: "{{.WORK_DIR}}/boost-extracted"
       INSTALL_PREFIX: "{{.WORK_DIR}}/boost-install"
-      SOURCE_DIR: "{{.WORK_DIR}}/boost-src"
     requires:
       vars:
         - "TAR_SHA256"
@@ -178,13 +178,13 @@ tasks:
       - task: "remote:download-and-extract-tar"
         vars:
           FILE_SHA256: "{{.TAR_SHA256}}"
-          OUTPUT_DIR: "{{.SOURCE_DIR}}"
+          OUTPUT_DIR: "{{.EXTRACTION_DIR}}"
           URL: "{{.TAR_URL}}"
     cmds:
       - task: "generate"
         vars:
           INSTALL_PREFIX: "{{.INSTALL_PREFIX}}"
-          SOURCE_DIR: "{{.SOURCE_DIR}}"
+          SOURCE_DIR: "{{.EXTRACTION_DIR}}"
           TARGETS:
             ref: ".TARGETS"
           EXTRA_ARGS:
@@ -193,7 +193,7 @@ tasks:
         vars:
           BUILD_DIR: "{{.BUILD_DIR}}"
           INSTALL_PREFIX: "{{.INSTALL_PREFIX}}"
-          SOURCE_DIR: "{{.SOURCE_DIR}}"
+          SOURCE_DIR: "{{.EXTRACTION_DIR}}"
           EXTRA_ARGS:
             ref: ".BUILD_AND_INSTALL_ARGS"
           JOBS: "{{.JOBS}}"

From 40cf0b3ac6512d8eac233b84b5f5c73827f91e72 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Mon, 17 Nov 2025 11:35:22 -0500
Subject: [PATCH 93/97] Fix boost args by removing quotes and spaces.

---
 exports/taskfiles/utils/boost.yaml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/exports/taskfiles/utils/boost.yaml b/exports/taskfiles/utils/boost.yaml
index 3e6dea9..5d4c58f 100644
--- a/exports/taskfiles/utils/boost.yaml
+++ b/exports/taskfiles/utils/boost.yaml
@@ -121,10 +121,10 @@ tasks:
         install
         --build-dir="{{.BUILD_DIR}}"
         {{- range .EXTRA_ARGS}}
-          "{{.}}"
+        {{.}}
         {{- end}}
         {{- if .JOBS}}
-          "-j{{.JOBS}}"
+        -j{{.JOBS}}
         {{- end}};
         popd;
       - "touch '{{.SOURCE_SENTINEL_FILE}}'"

From f425cc6c3b564d83da956b735adf169960423c2b Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Mon, 17 Nov 2025 12:31:19 -0500
Subject: [PATCH 94/97] Reorganize doc strings a bit.

---
 exports/taskfiles/utils/boost.yaml | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/exports/taskfiles/utils/boost.yaml b/exports/taskfiles/utils/boost.yaml
index 5d4c58f..166850f 100644
--- a/exports/taskfiles/utils/boost.yaml
+++ b/exports/taskfiles/utils/boost.yaml
@@ -70,10 +70,10 @@ tasks:
   # @param {string} [SOURCE_CHECKSUM_FILE={{.SOURCE_DIR}}.md5] Checksum file path for `SOURCE_DIR`.
   #
   # Build command parameters
+  # @param {string[]} [EXTRA_ARGS=[]] Any additional arguments to pass to the build command.
   # @param {int} [JOBS=0] The maximum number of concurrent processes to use when building. If 0, the
   # b2 flag is ommitted and the default is used. Before 1.76.0, the number was 1. Since 1.76.0, the
   # default is the number of cores.
-  # @param {string[]} [EXTRA_ARGS=[]] Any additional arguments to pass to the build command.
   build-and-install:
     internal: true
     label: "{{.TASK}}:{{.BUILD_DIR}}-{{.INSTALL_PREFIX}}"
@@ -145,17 +145,17 @@ tasks:
   # If `CMAKE_SETTINGS_DIR` is set, a settings file will be created in that directory, containing a
   # `Boost_ROOT` CMake variable that points to `INSTALL_PREFIX`.
   #
-  # General parameters
+  # Required parameters
   # @param {string} TAR_SHA256 Content hash to verify the downloaded tar file against.
   # @param {string} TAR_URL URL of the tar file to download.
+  # @param {string[]} TARGETS Target libraries to build.
   # @param {string} WORK_DIR Directory in which to store the source, build, and install directories.
-  # @param {string} [CMAKE_SETTINGS_DIR=""] If set, the directory where the project's CMake settings
-  # file should be stored.
   #
   # Boost parameters
-  # @param {string[]} TARGETS Target libraries to build.
   # @param {string[]} [BUILD_AND_INSTALL_ARGS=[]] Any additional arguments to pass to boost's build
   # and install command.
+  # @param {string} [CMAKE_SETTINGS_DIR=""] If set, the directory where the project's CMake settings
+  # file should be stored.
   # @param {string[]} [GENERATE_ARGS=[]] Any additional arguments to pass to the generate command.
   # @param {int} [JOBS=0] The maximum number of concurrent processes to use when building. If 0, the
   # b2 flag is ommitted and the default is used. Before 1.76.0, the number was 1. Since 1.76.0, the

From 509bc3c4d61ed9ccb965f8ac56d36a0fbe81e876 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Fri, 21 Nov 2025 21:03:19 -0500
Subject: [PATCH 95/97] Touch ups.

---
 exports/taskfiles/utils/boost.yaml | 23 ++++++++++-------------
 taskfiles/boost/tests.yaml         |  2 +-
 2 files changed, 11 insertions(+), 14 deletions(-)

diff --git a/exports/taskfiles/utils/boost.yaml b/exports/taskfiles/utils/boost.yaml
index 166850f..13a62d6 100644
--- a/exports/taskfiles/utils/boost.yaml
+++ b/exports/taskfiles/utils/boost.yaml
@@ -8,7 +8,9 @@ set: ["u", "pipefail"]
 shopt: ["globstar"]
 
 tasks:
-  # Runs the Boost generate (bootstrap) step.
+  # Runs Boost's generate (bootstrap) step.
+  # A sentinel file is written to `SOURCE_DIR` and added to `generates` to explicitly track whether
+  # this task updated `SOURCE_DIR`.
   #
   # @param {string} INSTALL_PREFIX Path prefix of where the project should be installed.
   # @param {string} SOURCE_DIR Project source directory.
@@ -21,14 +23,12 @@ tasks:
     vars:
       CHECKSUM_FILE: >-
         {{default (printf "%s.md5" .SOURCE_DIR) .CHECKSUM_FILE}}
-      EXTRA_ARGS:
-        ref: "default (list) .EXTRA_ARGS"
       SOURCE_SENTINEL_FILE: "{{.SOURCE_DIR}}/{{.TASK}}.sentinel"
     requires:
       vars:
         - "INSTALL_PREFIX"
-        - "TARGETS"
         - "SOURCE_DIR"
+        - "TARGETS"
     sources: ["{{.TASKFILE}}"]
     generates:
       - "{{.CHECKSUM_FILE}}"
@@ -46,7 +46,7 @@ tasks:
         --exec-prefix="{{.INSTALL_PREFIX}}"
         --with-libraries={{(join "," .TARGETS)}}
         {{- range .EXTRA_ARGS}}
-          "{{.}}"
+        {{.}}
         {{- end}};
         popd
       - "touch '{{.SOURCE_SENTINEL_FILE}}'"
@@ -55,8 +55,10 @@ tasks:
           CHECKSUM_FILE: "{{.CHECKSUM_FILE}}"
           INCLUDE_PATTERNS: ["{{.SOURCE_DIR}}"]
 
-  # Runs Boost's b2 build and install step.
+  # Runs Boost's combined b2 build and install step.
   # Fails if the caller has not successfully called `generate` on `SOURCE_DIR`.
+  # A sentinel file is written to `SOURCE_DIR` and added to `generates` to explicitly track whether
+  # this task updated `SOURCE_DIR`.
   #
   # Required parameters
   # @param {string} BUILD_DIR Directory in which to build boost.
@@ -69,7 +71,7 @@ tasks:
   # `INSTALL_PREFIX`
   # @param {string} [SOURCE_CHECKSUM_FILE={{.SOURCE_DIR}}.md5] Checksum file path for `SOURCE_DIR`.
   #
-  # Build command parameters
+  # b2 parameters
   # @param {string[]} [EXTRA_ARGS=[]] Any additional arguments to pass to the build command.
   # @param {int} [JOBS=0] The maximum number of concurrent processes to use when building. If 0, the
   # b2 flag is ommitted and the default is used. Before 1.76.0, the number was 1. Since 1.76.0, the
@@ -78,16 +80,12 @@ tasks:
     internal: true
     label: "{{.TASK}}:{{.BUILD_DIR}}-{{.INSTALL_PREFIX}}"
     vars:
-      # Checksum files
       BUILD_CHECKSUM_FILE: >-
         {{default (printf "%s.md5" .BUILD_DIR) .BUILD_CHECKSUM_FILE}}
       INSTALL_CHECKSUM_FILE: >-
         {{default (printf "%s.md5" .INSTALL_PREFIX) .INSTALL_CHECKSUM_FILE}}
       SOURCE_CHECKSUM_FILE: >-
         {{default (printf "%s.md5" .SOURCE_DIR) .SOURCE_CHECKSUM_FILE}}
-
-      EXTRA_ARGS:
-        ref: "default (list) .EXTRA_ARGS"
       SOURCE_SENTINEL_FILE: "{{.SOURCE_DIR}}/{{.TASK}}.sentinel"
     requires:
       vars:
@@ -143,7 +141,7 @@ tasks:
 
   # Downloads Boost from `TAR_URL` and then generates, builds, and installs Boost inside `WORK_DIR`.
   # If `CMAKE_SETTINGS_DIR` is set, a settings file will be created in that directory, containing a
-  # `Boost_ROOT` CMake variable that points to `INSTALL_PREFIX`.
+  # `Boost_ROOT` CMake variable that points to the installation.
   #
   # Required parameters
   # @param {string} TAR_SHA256 Content hash to verify the downloaded tar file against.
@@ -164,7 +162,6 @@ tasks:
     internal: true
     label: "{{.TASK}}:{{.TAR_URL}}-{{.WORK_DIR}}"
     vars:
-      # Directory parameters
       BUILD_DIR: "{{.WORK_DIR}}/boost-build"
       EXTRACTION_DIR: "{{.WORK_DIR}}/boost-extracted"
       INSTALL_PREFIX: "{{.WORK_DIR}}/boost-install"
diff --git a/taskfiles/boost/tests.yaml b/taskfiles/boost/tests.yaml
index 85570c1..167e55a 100644
--- a/taskfiles/boost/tests.yaml
+++ b/taskfiles/boost/tests.yaml
@@ -47,7 +47,6 @@ tasks:
     cmds:
       - task: "utils:boost:download-and-install"
         vars:
-          WORK_DIR: "{{.G_BOOST_DEPS_DIR}}/boost"
           TAR_SHA256: "aa25e7b9c227c21abb8a681efd4fe6e54823815ffc12394c9339de998eb503fb"
           TAR_URL: "https://github.com/boostorg/boost/releases/download/boost-1.89.0/\
             boost-1.89.0-b2-nodocs.tar.gz"
@@ -60,6 +59,7 @@ tasks:
             - "program_options"
             - "regex"
             - "url"
+          WORK_DIR: "{{.G_BOOST_DEPS_DIR}}/boost"
 
   run-boost-test:
     internal: true

From 6773dcc42a6ace7725b6155c60a20ee76c476f3c Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Fri, 21 Nov 2025 22:07:21 -0500
Subject: [PATCH 96/97] FAIL -> FAIL_ON_ERROR

---
 exports/taskfiles/utils/boost.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/exports/taskfiles/utils/boost.yaml b/exports/taskfiles/utils/boost.yaml
index 13a62d6..669cca2 100644
--- a/exports/taskfiles/utils/boost.yaml
+++ b/exports/taskfiles/utils/boost.yaml
@@ -111,7 +111,7 @@ tasks:
         vars:
           CHECKSUM_FILE: "{{.SOURCE_CHECKSUM_FILE}}"
           INCLUDE_PATTERNS: ["{{.SOURCE_DIR}}"]
-          FAIL: "true"
+          FAIL_ON_ERROR: "true"
     cmds:
       - >-
         pushd "{{.SOURCE_DIR}}";

From 310401e61acfc4063d8b9969fc7607f366ef7b39 Mon Sep 17 00:00:00 2001
From: davidlion <david.lion@yscope.com>
Date: Fri, 21 Nov 2025 22:07:49 -0500
Subject: [PATCH 97/97] Add checksum docs and re-add set/shopt.

---
 exports/taskfiles/utils/checksum.yaml | 38 ++++++++++++++++++++++++---
 1 file changed, 35 insertions(+), 3 deletions(-)

diff --git a/exports/taskfiles/utils/checksum.yaml b/exports/taskfiles/utils/checksum.yaml
index 8896296..ac60efa 100644
--- a/exports/taskfiles/utils/checksum.yaml
+++ b/exports/taskfiles/utils/checksum.yaml
@@ -1,13 +1,45 @@
 version: "3"
 
+set: ["u", "pipefail"]
+shopt: ["globstar"]
+
+# The checksum tasks are a robust way for a task to decided whether or not it should run.
+#
+# For many tasks it is not feasible to list out all files in `sources` and `generates`. These tasks
+# provide a way to `compute` a checksum for the contents of directories/files and `validate` whether
+# the contents still match the checksum in later runs.
+#
+# When creating a checksum a task should:
+#
+# a. Call the `compute` task at the end to create the checksum file.
+# b. Call `validate` in `deps` to verify the checksum file matches the current contents.
+#   - `validate` will delete the checksum file if there is no match.
+# c. Add the checksum file to `generates`. This ensures the task runs if:
+#   - The task has not run before.
+#   - `validate` deleted the checksum file as the contents did not match.
+#
+# When multiple tasks mutate the same contents, each task updates the checksum file and also tracks
+# whether it has run or not by creating a sentinel file.
+#
+# a. Before calling `compute`, create a sentinel file with a name unique to the task.
+# b. Add the sentinel file to `generates`. This ensures the task runs if:
+#   - The checksum file exists and matches the contents, but this task has not been run.
+#
+# Additional guidelines:
+#
+# - When creating a directory that will be included in a checksum, always delete any existing
+# contents first.
+#   - This ensures that if the contents diverge from the checksum file, the task is re-run with no
+#   stale data.
+# - If task, A, implicitly depends on task, B, but A does not call `B` in `deps`, it is possible
+# for a user to run A without having run B. A can ensure it fails gracefully by calling `validate`
+# on B's checksum with `FAIL_ON_ERROR: "true"`.
+
 tasks:
   # Compute the checksum of the given path include/exclude patterns, saving the result to
   # `CHECKSUM_FILE`. The calling task can set `IGNORE_ERROR` to "true" if they wish to continue if
   # checksum computation fails.
   #
-  # Note that using this task without setting `pipefail` in the root taskfile will cause `tar`
-  # failures to be ignored.
-  #
   # @param {string} CHECKSUM_FILE
   # @param {string[]} INCLUDE_PATTERNS Path wildcard patterns to compute the checksum for.
   # @param {string[]} [EXCLUDE_PATTERNS=[]] Path wildcard patterns, relative to any