From 781c1e96247532256974e864c5ba6e653e103b9d Mon Sep 17 00:00:00 2001
From: Brad Fitzpatrick <bradfitz@tailscale.com>
Date: Mon, 24 Feb 2025 12:14:14 -0800
Subject: [PATCH] tstest/deptest: add DepChecker.ExtraEnv option for callers to
 set

For tests (in another repo) that use cgo, we'd like to set CGO_ENABLED=1
explicitly when evaluating cross-compiled deps with "go list".

Updates tailscale/corp#26717
Updates tailscale/corp#26737

Change-Id: Ic21a54379ae91688d2456985068a47e73d04a645
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
---
 tstest/deptest/deptest.go | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tstest/deptest/deptest.go b/tstest/deptest/deptest.go
index 2393733e6..4effd4a78 100644
--- a/tstest/deptest/deptest.go
+++ b/tstest/deptest/deptest.go
@@ -27,6 +27,7 @@ type DepChecker struct {
 	BadDeps  map[string]string // package => why
 	WantDeps set.Set[string]   // packages expected
 	Tags     string            // comma-separated
+	ExtraEnv []string          // extra environment for "go list" (e.g. CGO_ENABLED=1)
 }
 
 func (c DepChecker) Check(t *testing.T) {
@@ -43,6 +44,7 @@ func (c DepChecker) Check(t *testing.T) {
 	if c.GOARCH != "" {
 		extraEnv = append(extraEnv, "GOARCH="+c.GOARCH)
 	}
+	extraEnv = append(extraEnv, c.ExtraEnv...)
 	cmd.Env = append(os.Environ(), extraEnv...)
 	out, err := cmd.Output()
 	if err != nil {