Function SourceProfile

nix/nix.go:319–383

SourceProfile adds environment variables from the Nix profile shell scripts to the current process's environment. This ensures that PATH contains the nix bin directory and that NIX_PROFILES and NIX_SSL_CERT_FILE are set. For properly configured Nix installations, the user's login shell handles sour

()

// For properly configured Nix installations, the user's login shell handles
// sourcing the profile and SourceProfile has no effect.
func SourceProfile() (sourced bool, err error) {
	if profileSourced() {
		return false, nil
	}
	sourceProfileMutex.Lock()
	defer sourceProfileMutex.Unlock()

	if profileSourced() {
		return false, nil
	}

	shell := os.Getenv("SHELL")
	if shell == "" {
		shell = "sh"
	}
	shell, _ = exec.LookPath("sh")
	if shell == "" {
		shell = "/bin/sh"
	}

	trySource := func(path string) error {
		ctx, cancel := context.WithTimeout(context.Background(), 3*time.Second)
		defer cancel()

		wantEnv := map[string]bool{
			"NIX_PROFILES":              true,
			"NIX_SSL_CERT_FILE":         true,
			"PATH":                      true,
			"XDG_DATA_DIRS":             true,
			"__ETC_PROFILE_NIX_SOURCED": true,
		}
		script := fmt.Sprintf(". \"%s\"\n", path)
		for name := range wantEnv {
			script += fmt.Sprintf("echo %s=\"$%[1]s\"\n", name)
		}

		cmd := exec.CommandContext(ctx, shell, "-e", "-c", script)
		stdout, err := cmd.Output()
		if err != nil {
			return err
		}
		for _, line := range strings.Split(string(stdout), "\n") {
			name, value, ok := strings.Cut(line, "=")
			if !ok {
				continue
			}
			if wantEnv[name] {
				err = os.Setenv(name, value)
				if err != nil {
					return err
				}
				delete(wantEnv, name)
			}
		}
		return nil
	}

	for _, path := range profilePaths() {