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// Copyright 2023 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package cfg
import (
"cmd/go/internal/par"
"os/exec"
)
var lookPathCache par.ErrCache[string, string]
// LookPath wraps exec.LookPath and caches the result
// which can be called by multiple Goroutines at the same time.
func LookPath(file string) (path string, err error) {
return lookPathCache.Do(file,
func() (string, error) {
return exec.LookPath(file)
})
}