// EvalSymlinks calls [Clean] on the result.
func EvalSymlinks(path string) (string, error) {
	return evalSymlinks(path)
}

// IsAbs reports whether the path is absolute.
func IsAbs(path string) bool {
	return filepathlite.IsAbs(path)
}

// Abs returns an absolute representation of path.
// If the path is not absolute it will be joined with the current

}

// IsLocal reports whether the pattern must be resolved from a specific root or
// directory, such as a filesystem path or a single module.
func (m *Match) IsLocal() bool {
	return build.IsLocalImport(m.pattern) || filepath.IsAbs(m.pattern)
}

// IsMeta reports whether the pattern is a “meta-package” keyword that represents
// multiple packages, such as "std", "cmd", or "all".
func (m *Match) IsMeta() bool {
	return IsMetaPackage(m.pattern)
}

		for _, test := range isabstests {
			tests = append(tests, IsAbsTest{"c:" + test.path, test.isAbs})
		}
	} else {
		tests = isabstests
	}

	for _, test := range tests {
		if r := filepath.IsAbs(test.path); r != test.isAbs {
			t.Errorf("IsAbs(%q) = %v, want %v", test.path, r, test.isAbs)
		}
	}
}

type EvalSymlinksTest struct {

		return f(s)
	}
	return filepath.SplitList(s)
}

// isAbsPath calls ctxt.IsAbsPath (if not nil) or else filepath.IsAbs.
func (ctxt *Context) isAbsPath(path string) bool {
	if f := ctxt.IsAbsPath; f != nil {
		return f(path)
	}
	return filepath.IsAbs(path)
}

// isDir calls ctxt.IsDir (if not nil) or else uses fsys.Stat.
func isDir(path string) bool {
	fi, err := fsys.Stat(path)

	var dirFd = int32(-1)
	var dirName string

	dir := "/"
	if !isAbs(path) {
		dir = cwd
	}
	path = joinPath(dir, path)

	for _, p := range preopens {
		if len(p.name) > len(dirName) && stringslite.HasPrefix(path, p.name) {
			dirFd, dirName = p.fd, p.name
		}
	}

	path = path[len(dirName):]
	for isAbs(path) {
		path = path[1:]
	}
	if len(path) == 0 {
		path = "."
	}

		if strings.HasPrefix(val, "~") {
			return fmt.Errorf("GOPATH entry cannot start with shell metacharacter '~': %q", val)
		}
		if !filepath.IsAbs(val) && val != "" {
			return fmt.Errorf("GOPATH entry is relative; must be absolute path: %q", val)
		}
	case "GOMODCACHE":
		if !filepath.IsAbs(val) && val != "" {
			return fmt.Errorf("GOMODCACHE entry is relative; must be absolute path: %q", val)
		}
	case "CC", "CXX":

	buildModeInit()
	if err := fsys.Init(base.Cwd()); err != nil {
		base.Fatal(err)
	}

	// Make sure -pkgdir is absolute, because we run commands
	// in different directories.
	if cfg.BuildPkgdir != "" && !filepath.IsAbs(cfg.BuildPkgdir) {
		p, err := filepath.Abs(cfg.BuildPkgdir)
		if err != nil {
			fmt.Fprintf(os.Stderr, "go: evaluating -pkgdir: %v\n", err)
			base.SetExitStatus(2)
			base.Exit()
		}
		cfg.BuildPkgdir = p
	}

	// First, is it a complete package path as it is? If so, we are done.
	// This avoids confusion over package paths that have other
	// package paths as their prefix.
	var importErr error
	if filepath.IsAbs(arg) {
		pkg, importErr = build.ImportDir(arg, build.ImportComment)
		if importErr == nil {
			return pkg, arg, "", false
		}
	} else {
		pkg, importErr = build.Import(arg, wd, build.ImportComment)

			// complete URL. For all other paths, implicitly add "https://".
			if strings.ContainsAny(url, ".:/") && !strings.Contains(url, ":/") && !filepath.IsAbs(url) && !path.IsAbs(url) {
				url = "https://" + url
			}

			// Check that newProxyRepo accepts the URL.
			// It won't do anything with the path.
			if _, err := newProxyRepo(url, "golang.org/x/text"); err != nil {

			}
			missingBinaries = true
			continue
		}
		if m.Unsymbolizable() {
			// Skip well-known system mappings
			continue
		}
		if m.BuildID == "" {
			if u, err := url.Parse(m.File); err == nil && u.IsAbs() && strings.Contains(strings.ToLower(u.Scheme), "http") {
				// Skip mappings pointing to a source URL
				continue
			}
		}

		name := filepath.Base(m.File)
		if m.BuildID != "" {