Function PrependBinDirToEnv

pkg/toolinstall/paths.go:40–59

PrependBinDirToEnv takes an env slice and ensures the tools bin directory is prepended to the PATH entry. This allows installed tools to find other installed tools (e.g., npx finding node).

(env []string)

// is prepended to the PATH entry. This allows installed tools to find
// other installed tools (e.g., npx finding node).
func PrependBinDirToEnv(env []string) []string {
	binDir := BinDir()
	result := make([]string, 0, len(env))
	found := false

	for _, e := range env {
		if existing, ok := strings.CutPrefix(e, "PATH="); ok {
			result = append(result, "PATH="+binDir+string(os.PathListSeparator)+existing)
			found = true
		} else {
			result = append(result, e)
		}
	}

	if !found {
		result = append(result, "PATH="+binDir)
	}

	return result
}