d2lang/d2 · warning

chromium installation cancelled by user

Error message

chromium installation cancelled by user

What it means

When the user answers anything other than y/yes to the Chromium install confirmation, InitPlaywrightWithPrompt deliberately returns this error. It is a controlled user-declined outcome, not a malfunction.

Source

Thrown at lib/png/png.go:116

	if os.Getenv("CI") != "" {
		return InitPlaywright()
	}

	// Just try running first. This only works if drivers and browsers are already installed
	pw, err := playwright.Run()
	if err == nil {
		return startPlaywright(pw)
	}

	fmt.Print("D2 needs to install Chromium v149.0.7827.55 to render non-SVG images. Continue? (y/N): ")
	reader := bufio.NewReader(os.Stdin)
	response, err := reader.ReadString('\n')
	if err != nil {
		return Playwright{}, fmt.Errorf("failed to read user input: %w", err)
	}
	response = strings.TrimSpace(strings.ToLower(response))
	if response != "y" && response != "yes" {
		return Playwright{}, fmt.Errorf("chromium installation cancelled by user")
	}

	return InitPlaywright()
}

type timeoutSetter interface {
	SetDefaultTimeout(float64)
	SetDefaultNavigationTimeout(float64)
}

func configureTimeout(target timeoutSetter) {
	seconds, ok := env.Timeout()
	if !ok {
		return
	}
	if seconds < 0 {
		seconds = 0
	}

View on GitHub (pinned to 0d69dca6f5)

Solutions

1. Re-run and answer y or yes to proceed with installation
2. Set CI=1 to skip the prompt entirely if automation should always install
3. Pre-install Chromium out-of-band and use a path that does not prompt
4. If declined intentionally, fall back to SVG output instead of PNG rendering

Example fix

// before
pw, err := InitPlaywrightWithPrompt() // error: cancelled by user
// after
if err != nil && strings.Contains(err.Error(), "cancelled by user") {
    log.Println("PNG rendering skipped; export SVG instead")
    return renderSVG()
}

// no pre-check possible; user decision at runtime
fmt.Fprintln(os.Stderr, "Chromium download (~150MB) required")

func isUserCancelled(err error) bool { return strings.Contains(err.Error(), "cancelled by user") }

pw, err := InitPlaywrightWithPrompt()
if err != nil {
    if isUserCancelled(err) {
        return renderSVG() // graceful fallback
    }
    return err
}

When it happens

Trigger: User types anything except y or yes (case-insensitive, trimmed) at the 'Continue? (y/N)' prompt during InitPlaywrightWithPrompt().

Common situations: User accidentally presses Enter (default is No); scripted input containing unexpected text; user declines a large download on metered connections.

Related errors

• no color stops in gradient
• cannot read a directory
• %s is not a supported format. Supported formats are: %s
• failed to fully compile (partial render written) %s: %w
• failed to compile %s: %w

AI-assisted analysis of d2lang/d2@0d69dca6f5 (2026-08-31). Data as JSON: /api/errors/b56c873871b5fdf0. Report an issue: GitHub.