Function handleNixUpgrade

cmd/upgrade.go:172–272

(current, latest string)

}

func handleNixUpgrade(current, latest string) error {
	faint := color.New(color.Faint)
	version := color.New(color.FgCyan)

	currentCommit := extractCommitFromVersion(current)
	dirty := isNixDirty(current)

	errutil.Print(faint, "current  ")
	errutil.Print(version, current)
	if currentCommit != "" {
		errutil.Printf(faint, " (commit %s)", currentCommit)
	}
	fmt.Println()

	errutil.Print(faint, "latest   ")
	errutil.Println(version, latest)
	fmt.Println()

	if dirty {
		yellow := color.New(color.FgYellow)
		errutil.Println(yellow, tui.SymbolWarning+" you are running a dirty nix build (uncommitted changes)")
		fmt.Println()
		printNixUpgradeInstructions()
		return nil
	}

	if currentCommit == "" {
		yellow := color.New(color.FgYellow)
		errutil.Println(yellow, tui.SymbolWarning+" this is a nix installation")
		errutil.Println(faint, "  nix store is immutable; use nix commands to upgrade")
		fmt.Println()
		printNixUpgradeInstructions()
		return nil
	}

	releaseCommit, err := fetchCommitForTag(latest)
	if err != nil {
		errutil.Printf(faint, "  (could not fetch release commit: %v)\n", err)
		fmt.Println()
		yellow := color.New(color.FgYellow)
		errutil.Println(yellow, tui.SymbolWarning+" this is a nix installation")
		errutil.Println(faint, "  nix store is immutable; use nix commands to upgrade")
		fmt.Println()
		printNixUpgradeInstructions()
		return nil
	}

	releaseShort := releaseCommit
	if len(releaseShort) > 7 {
		releaseShort = releaseShort[:7]
	}

	if strings.HasPrefix(releaseCommit, currentCommit) || strings.HasPrefix(currentCommit, releaseShort) {
		green := color.New(color.FgGreen)
		errutil.Printf(green, tui.SymbolSuccess+" you are running %s (commit %s)\n", latest, releaseShort)
		return nil
	}