go/build: don't check dependencies of vendored circl library

src/go/build/deps_test.go

@@ -499,6 +499,11 @@ var depsRules = `
  < crypto/x509
  < crypto/tls;
 
+ # CIRCL
+ crypto, golang.org/x/sys/cpu, hash
+ < golang.org/x/crypto/blake2b
+ < golang.org/x/crypto/blake2s;
+
  # crypto-aware packages
 
  DEBUG, go/build, go/types, text/scanner, crypto/md5
@@ -730,6 +735,11 @@ func TestDependencies(t *testing.T) {
  policy := depsPolicy(t)
 
  for _, pkg := range all {
+ // Skip import dependency checking within the CIRCL library,
+ // there are too many packages.
+ if strings.HasPrefix(pkg, "github.com/cloudflare/circl/") {
+ continue
+ }
  imports, err := findImports(pkg)
  if err != nil {
  t.Error(err)
@@ -740,6 +750,11 @@ func TestDependencies(t *testing.T) {
  }
  var bad []string
  for _, imp := range imports {
+ // TODO Remove this exception for github.com/cloudflare/circl
+ // and add CIRCL to the dependency graph specified by `depsRules`.
+ if strings.HasPrefix(imp, "github.com/cloudflare/circl/") {
+ continue
+ }
  sawImport[pkg][imp] = true
  if !policy.HasEdge(pkg, imp) {
  bad = append(bad, imp)
@@ -755,7 +770,7 @@ var buildIgnore = []byte("\n//go:build ignore")
 
 func findImports(pkg string) ([]string, error) {
  vpkg := pkg
- if strings.HasPrefix(pkg, "golang.org") {
+ if strings.HasPrefix(pkg, "golang.org") || strings.HasPrefix(pkg, "github.com") {
  vpkg = "vendor/" + pkg
  }
  dir := filepath.Join(Default.GOROOT, "src", vpkg)