chore(deps): bump nixpkgs from b5aa0fb to 0bb7ec5 (#73)

* chore(deps): bump nixpkgs from `b5aa0fb` to `0bb7ec5`

Bumps [nixpkgs](https://github.com/nixos/nixpkgs) from `b5aa0fb` to `0bb7ec5`.
- [Commits](NixOS/nixpkgs@b5aa0fb...0bb7ec5)

---
updated-dependencies:
- dependency-name: nixpkgs
  dependency-version: 0bb7ec54c8483066ec9d7720e780a5caa71f8612
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

* fix(nix): pin Linux swiftformat nixpkgs

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Fukaya Temma <23367170+pranc1ngpegasus@users.noreply.github.com>
Co-authored-by: pranc1ngpegasus <temma.fukaya@mokmok.dev>

Author: dependabot[bot]

flake.lock

@@ -1,6 +1,9 @@
 {
   inputs = {
     nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-unstable";
+    # Keep Linux swiftformat on the last known-good nixpkgs revision. Newer
+    # nixpkgs currently builds Swift 5.10 with a Clang-only TLS flag.
+    nixpkgs-swiftformat.url = "github:nixos/nixpkgs/b5aa0fbd538984f6e3d201be0005b4463d8b09f8";
     flake-utils.url = "github:numtide/flake-utils";
     rust-overlay.url = "github:oxalica/rust-overlay";
     rust-overlay.inputs.nixpkgs.follows = "nixpkgs";
@@ -10,6 +13,7 @@
     {
       self,
       nixpkgs,
+      nixpkgs-swiftformat,
       flake-utils,
       rust-overlay,
     }:
@@ -20,6 +24,11 @@
           inherit system;
           overlays = [ rust-overlay.overlays.default ];
         };
+        swiftformat =
+          if pkgs.stdenv.isLinux then
+            (import nixpkgs-swiftformat { inherit system; }).swiftformat
+          else
+            pkgs.swiftformat;
         rustToolchain = pkgs.rust-bin.fromRustupToolchainFile ./rust-toolchain.toml;
 
         # Shared by both devShells on macOS. Nix injects its own apple-sdk +