goreleaser/goreleaser · error

could not apply templates: %w

Error message

could not apply templates: %w

What it means

Wrapped error in the MCP pipe's Publish: the batched tmpl.ApplyAll over the mcp section's string fields (name, description, title, homepage, repository.*, auth.*) failed on at least one field. The %w chain names which template expression was invalid.

Source

Thrown at internal/pipe/mcp/mcp.go:100

	if strings.TrimSpace(disable) == "auto" && ctx.Semver.Prerelease != "" {
		return pipe.Skip("prerelease detected with 'auto' disable, skipping mcp publish")
	}

	warnExperimental()

	if err := tmpl.New(ctx).ApplyAll(
		&mcp.Name,
		&mcp.Description,
		&mcp.Title,
		&mcp.Homepage,
		&mcp.Repository.URL,
		&mcp.Repository.Source,
		&mcp.Repository.ID,
		&mcp.Repository.Subfolder,
		&mcp.Auth.Type,
		&mcp.Auth.Token,
	); err != nil {
		return fmt.Errorf("could not apply templates: %w", err)
	}

	provider, err := p.authProviderFn(
		p.registry,
		mcp.Auth.Type,
		mcp.Auth.Token,
	)
	if err != nil {
		return fmt.Errorf("could not login: %w", err)
	}
	if err := provider.Login(ctx); err != nil {
		return fmt.Errorf("could not login: %w", err)
	}
	defer func() {
		// logout...
		_ = os.Remove(gitHubTokenFilePath)
		_ = os.Remove(registryTokenFilePath)
	}()

View on GitHub (pinned to f5edd73956)

Solutions

1. Fix invalid template syntax or unknown fields in the mcp config (name, description, title, urls, auth)
2. Use only variables available in the publish environment
3. Run goreleaser check to validate the mcp section

When it happens

Trigger: Thrown at internal/pipe/mcp/mcp.go:100 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of goreleaser/goreleaser@f5edd73956 (2026-09-05). Data as JSON: /api/errors/a62b100a3373bf54. Report an issue: GitHub.