Contribution Guidelines

Table of Contents

Contribution Guidelines

This is a loose set of "guidelines" for contributing to my depot. Please note that I will not accept any patches that don't follow these guidelines.

Also consider the code of conduct. No really, you should.

Before making a change

Before making a change, consider your motivation for making the change. Documentation updates, bug fixes and the like are always welcome.

When adding a feature you should consider whether it is only useful for your particular use-case or whether it is generally applicable for other users of the project.

When in doubt - just ask! You can reach out to me via mail or on Twitter / IRC / etc.

Commit messages

All commit messages should be structured like this:

type(scope): Subject line with at most a 68 character length

Body of the commit message with an empty line between subject and
body. This text should explain what the change does and why it has
been made, *especially* if it introduces a new feature.

Relevant issues should be mentioned if they exist.

Where type can be one of:

feat: A new feature has been introduced
fix: An issue of some kind has been fixed
docs: Documentation or comments have been updated
style: Formatting changes only
refactor: Hopefully self-explanatory!
test: Added missing tests / fixed tests
chore: Maintenance work

And scope should refer to some kind of logical grouping inside of the project.

Please take a look at the existing commit log for examples.

Commit content

Multiple changes should be divided into multiple git commits whenever possible. Common sense applies.

The fix for a single-line whitespace issue is fine to include in a different commit. Introducing a new feature and refactoring (unrelated) code in the same commit is not fine.

git commit -a is generally taboo.

In my experience making "sane" commits becomes significantly easier as developer tooling is improved. The interface to git that I recommend is magit. Even if you are not yet an Emacs user, it makes sense to install Emacs just to be able to use magit - it is really that good.

For staging sane chunks on the command line with only git, consider git add -p.

Code quality

This one should go without saying - but please ensure that your code quality does not fall below the rest of the project. This is of course very subjective, but as an example if you place code that throws away errors into a block in which errors are handled properly your change will be rejected.

In my experience there is a strong correlation between the visual appearance of a code block and its quality. This is a simple way to sanity-check your work while squinting and keeping some distance from your screen ;-)

Builds & tests

My projects are built using Nix to avoid "build pollution" via the user's environment.

If you have Nix installed and are contributing to a project tracked in this repository, you can usually build the project by calling nix-build -A path.to.project.

For example, to build a project located at tools/foo you would call nix-build -A tools.foo

If the project has tests, check that they still work before submitting your change.

Submitting patches

When making a change, please create an appropriate commit locally and send it to me using either git send-email or git format-patch. The email address to use for depot reviews is depot@tazj.in, which is a public group.

I recognise that most people are used to a GitHub-style workflow. If you run into issues with the above but would still like to contribute, feel free to reach out to me.