From 93f5ed019a89ea041a98cb485378851c9ce939c1 Mon Sep 17 00:00:00 2001
From: Josh Bleecher Snyder <josh@tailscale.com>
Date: Thu, 12 Aug 2021 12:22:40 -0700
Subject: [PATCH] depaware: use go toolchain that depaware was compiled with

Fixes tailscale/corp#2376

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
---
 depaware/depaware.go | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/depaware/depaware.go b/depaware/depaware.go
index 6c0e2fe..4914e1c 100644
--- a/depaware/depaware.go
+++ b/depaware/depaware.go
@@ -18,6 +18,7 @@ import (
 	"log"
 	"os"
 	"path/filepath"
+	"runtime"
 	"sort"
 	"strings"
 	"unicode"
@@ -39,6 +40,7 @@ func Main() {
 	if *check && *update {
 		log.Fatalf("-check and -update can't be used together")
 	}
+	setGoBinaryPath()
 
 	ipaths, err := pkgPaths(flag.Args()...)
 	if err != nil {
@@ -305,3 +307,11 @@ func parsePreferredWhy(r io.Reader) map[string]string {
 	}
 	return m
 }
+
+// setGoBinaryPath makes the go binary executed by go/packages
+// match the go binary that depaware was compiled with.
+func setGoBinaryPath() {
+	binDir := filepath.Join(runtime.GOROOT(), "bin")
+	pathEnv := fmt.Sprintf("%s%c%s", binDir, os.PathListSeparator, os.Getenv("PATH"))
+	os.Setenv("PATH", pathEnv)
+}