homebrew-cask/RELEASING.md

Release Standards

Here's where we document how homebrew-cask is released.

Versioning

We attempt to follow Semantic Versioning as much as possible.

Since we are still pre-1.0, this essentially means that we bump the PATCH number when we fix bugs, and we bump the MINOR number when we add stuff. Pretty simple.

The script developer/bin/get_release_tag can tell you the latest release tag that exists and/or calculate the proposed next release tag. Docs are at get_release_tag -help.

Release Process

We'll get this scripted someday, but until then it's better to have it written down than floating in a brain somewhere.

1. Do a git log since the last release to see what changed. You can scope it to lib to just pick up code changes and filter out Casks noise. Like this:

   git log $(developer/bin/get_release_tag)..HEAD lib
   

2. Decide whether to bump the minor or patch fields in the next tag, based on whether or not features were added. Run the shell command

   new_tag=$(developer/bin/get_release_tag -next)    # or -next -patch
   

   and make sure the value in $new_tag is what you want.
3. Optionally run developer/bin/project_stats release for overall release stats.
4. Bump the VERSION string which is stored in the file lib/cask/version.rb. It should match $new_tag.
5. Populate the CHANGELOG with a new section for the release you are creating. Follow the patterns used elsewhere in the file.
6. Make a commit containing the CHANGELOG and version-bump. Like this:

   git add CHANGELOG lib/cask/version.rb
   git commit -m "cut $new_tag"
   

7. Tag that commit, ensuring that you provide a message so we get an annotated tag. Like this:

   git tag -m "$new_tag" "$new_tag"
   

8. Push the commit and the tag:

   git push --follow-tags
   

9. Unset $new_tag, you don't need it anymore.

   unset new_tag
   

10. Open your browser to https://github.com/phinze/homebrew-cask/releases . Then click the link for your newly pushed tag. Click the "Edit Tag" button in the top right corner of that page.
11. Paste the markdown summary from the CHANGELOG in the body of the release and click "Publish Release".
12. Rejoice! Have a 🍪.

Things to Consider

The way brew update works, users will always be tracking HEAD in their tap. This means that the latest updates to Casks are going to trickle out immediately after push. This means there are times when we need to be thoughtful about how we push out new or breaking functionality. As a pre-1.0 project we can still break backwards compatibility, but sometimes there might be decisions we can make about releasing to make things easier on our users.

In general: go easy on the users!