}
func vendorPkg(vdir, pkg string) {
- // TODO(#42504): Instead of calling modload.ImportMap then build.ImportDir,
- // just call load.PackagesAndErrors. To do that, we need to add a good way
- // to ignore build constraints.
- realPath := modload.ImportMap(pkg)
- if realPath != pkg && modload.ImportMap(realPath) != "" {
+ src, realPath, _ := modload.Lookup("", false, pkg)
+ if src == "" {
+ base.Errorf("internal error: no pkg for %s\n", pkg)
+ return
+ }
+ if realPath != pkg {
+ // TODO(#26904): Revisit whether this behavior still makes sense.
+ // This should actually be impossible today, because the import map is the
+ // identity function for packages outside of the standard library.
+ //
+ // Part of the purpose of the vendor directory is to allow the packages in
+ // the module to continue to build in GOPATH mode, and GOPATH-mode users
+ // won't know about replacement aliasing. How important is it to maintain
+ // compatibility?
fmt.Fprintf(os.Stderr, "warning: %s imported as both %s and %s; making two copies.\n", realPath, realPath, pkg)
}
copiedFiles := make(map[string]bool)
dst := filepath.Join(vdir, pkg)
- src := modload.PackageDir(realPath)
- if src == "" {
- fmt.Fprintf(os.Stderr, "internal error: no pkg for %s -> %s\n", pkg, realPath)
- }
copyDir(dst, src, matchPotentialSourceFile, copiedFiles)
if m := modload.PackageModule(realPath); m.Path != "" {
copyMetadata(m.Path, realPath, dst, src, copiedFiles)
return ".", module.Version{}
}
-// ImportMap returns the actual package import path
-// for an import path found in source code.
-// If the given import path does not appear in the source code
-// for the packages that have been loaded, ImportMap returns the empty string.
-func ImportMap(path string) string {
- pkg, ok := loaded.pkgCache.Get(path).(*loadPkg)
- if !ok {
- return ""
- }
- return pkg.path
-}
-
-// PackageDir returns the directory containing the source code
-// for the package named by the import path.
-func PackageDir(path string) string {
- pkg, ok := loaded.pkgCache.Get(path).(*loadPkg)
- if !ok {
- return ""
- }
- return pkg.dir
-}
-
// PackageModule returns the module providing the package named by the import path.
func PackageModule(path string) module.Version {
pkg, ok := loaded.pkgCache.Get(path).(*loadPkg)