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.