Function triggerUpdate

internal/vercheck/vercheck.go:174–203

triggerUpdate runs `devbox version -v` and triggers an update since a new version is available. It parses the output to get the new launcher and devbox versions.

(stdErr io.Writer)

// version is available. It parses the output to get the new launcher and
// devbox versions.
func triggerUpdate(stdErr io.Writer) (*updatedVersions, error) {
	exePath := os.Getenv(envir.LauncherPath)
	if exePath == "" {
		ux.Fwarningf(stdErr, "expected LAUNCHER_PATH to be set. Defaulting to \"devbox\".")
		exePath = "devbox"
	}

	// TODO savil. Add a --json flag to devbox version and parse the output as JSON
	cmd := exec.Command(exePath, "version", "-v")

	buf := new(bytes.Buffer)
	cmd.Stdout = io.MultiWriter(stdErr, buf)
	cmd.Stderr = stdErr
	if err := cmd.Run(); err != nil {
		return nil, errors.WithStack(err)
	}

	// Parse the output to ascertain the new devbox and launcher versions
	updated := &updatedVersions{}
	for _, line := range strings.Split(buf.String(), "\n") {
		if strings.HasPrefix(line, "Version:") {
			updated.devboxVersion = strings.TrimSpace(strings.TrimPrefix(line, "Version:"))
		}

		if strings.HasPrefix(line, "Launcher:") {
			updated.launcherVersion = strings.TrimSpace(strings.TrimPrefix(line, "Launcher:"))
		}
	}
	return updated, nil
}

func printSuccessMessage(w io.Writer, toolName, oldVersion, newVersion string) {
	var msg string