Monorepo

If you want to use GoReleaser within a monorepo and use tag prefixes to mark “which tags belong to which sub project”, GoReleaser has you covered.

Premises

Your project falls into either one of these categories:

1. tags are like subproject1/v1.2.3 and subproject2/v1.2.3;
2. tags are like @user/[email protected] (for an npm package, for example) and v1.2.3 for the rest of the (Go) code.

Usage

Category 1

You’ll need to create a .goreleaser.yaml for each subproject you want to use GoReleaser in:

project_name: subproj1

monorepo:
  tag_prefix: subproject1/
  dir: subproj1

Then, you can release with (from the project’s root directory):

goreleaser release --clean -f ./subproj1/.goreleaser.yaml

Then, the following is different from a “regular” run:

• GoReleaser will then look if current commit has a tag prefixed with subproject1, and the previous tag with the same prefix;
• Changelog will include only commits that contain changes to files within the subproj1 directory;
• Release name gets prefixed with {{ .ProjectName }} if empty;
• All build’s dir setting get set to monorepo.dir if empty;
  • if yours is not, you might want to change that manually;
• Extra files on the release, archives, Docker builds, etc. are prefixed with monorepo.dir;
• If using changelog.use: git, only commits matching files in monorepo.dir will be included in the changelog.
• On templates, {{.PrefixedTag}} will be monorepo.prefix/tag (aka the actual tag name), and {{.Tag}} has the prefix stripped;

The rest of the release process should work as usual.

Category 2

You’ll need to create a .goreleaser.yaml for your Go code in the root of the project:

monorepo:
  tag_prefix: v

Then, you can release with:

goreleaser release --clean

GoReleaser will then ignore the tags that are not prefixed with v, and it should work as expected from there on.

A note about gomods and prefixed tags