rs := LoadModFile(ctx)
	return moduleInfo(ctx, rs, m, 0, nil)
}

// PackageModRoot returns the module root directory for the module that provides
// a given package. If modules are not enabled or if the package is in the
// standard library or if the package was not successfully loaded with
// LoadPackages or ImportFromFiles, the empty string is returned.
func PackageModRoot(ctx context.Context, pkgpath string) string {

			if !cfg.ModulesEnabled {
				buildMode = build.ImportComment
			} else {
				buildContext.GOPATH = "" // Clear GOPATH so packages are imported as pure module packages
			}
			modroot := modload.PackageModRoot(ctx, r.path)
			if modroot == "" && str.HasPathPrefix(r.dir, cfg.GOROOTsrc) {
				modroot = cfg.GOROOTsrc
				gorootSrcCmd := filepath.Join(cfg.GOROOTsrc, "cmd")
				if str.HasPathPrefix(r.dir, gorootSrcCmd) {