nixpkgs/pkgs/development/compilers/go/go_no_vendor_checks-1.16.patch

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Starting from go1.14, go verifes that vendor/modules.txt matches the requirements
and replacements listed in the main module go.mod file, and it is a hard failure if
vendor/modules.txt is missing.
Relax module consistency checks and switch back to pre go1.14 behaviour if
vendor/modules.txt is missing regardless of go version requirement in go.mod.
This has been ported from FreeBSD: https://reviews.freebsd.org/D24122
See https://github.com/golang/go/issues/37948 for discussion.
diff --git a/src/cmd/go/internal/modload/vendor.go b/src/cmd/go/internal/modload/vendor.go
index d8fd91f1fe..8bc08e6fed 100644
--- a/src/cmd/go/internal/modload/vendor.go
+++ b/src/cmd/go/internal/modload/vendor.go
@@ -133,7 +133,7 @@ func checkVendorConsistency() {
readVendorList()
pre114 := false
- if semver.Compare(index.goVersionV, "v1.14") < 0 {
+ if semver.Compare(index.goVersionV, "v1.14") < 0 || (os.Getenv("GO_NO_VENDOR_CHECKS") == "1" && len(vendorMeta) == 0) {
// Go versions before 1.14 did not include enough information in
// vendor/modules.txt to check for consistency.
// If we know that we're on an earlier version, relax the consistency check.