# Contributing to Homebrew First time contributing to Homebrew? Read our [Code of Conduct](https://github.com/Homebrew/.github/blob/master/CODE_OF_CONDUCT.md#code-of-conduct). ### To report a bug * run `brew update` (twice) * run and read `brew doctor` * read [the Troubleshooting Checklist](https://docs.brew.sh/Troubleshooting) * open an issue on the formula's repository ### To submit a version upgrade for the `foo` formula * check if the same upgrade has been already submitted by [searching the open pull requests for `foo`](https://github.com/Homebrew/homebrew-core/pulls?utf8=✓&q=is%3Apr+is%3Aopen+foo). * `brew bump-formula-pr --strict foo` with `--url=...` and `--sha256=...` or `--tag=...` and `--revision=...` arguments. ### To add a new formula for `foo` version `2.3.4` from `$URL` * read [the Formula Cookbook](https://docs.brew.sh/Formula-Cookbook) or: `brew create $URL` and make edits * `brew install --build-from-source foo` * `brew audit --new-formula foo` * `git commit` with message formatted `foo 2.3.4 (new formula)` * [open a pull request](https://docs.brew.sh/How-To-Open-a-Homebrew-Pull-Request) and fix any failing tests ### To contribute a fix to the `foo` formula If you are already well versed in the use of `git`, then you can find the local copy of the `homebrew-core` repository in this directory (`$(brew --prefix)/Homebrew/Library/Taps/homebrew/homebrew-core/`), modify the formula there leaving the section `bottle do ... end` unchanged, and prepare a pull request as you usually do. Before submitting your pull request, be sure to test it with these commands: ``` brew uninstall --force foo brew install --build-from-source foo brew test foo brew audit --strict foo ``` After testing, if you think it is needed to force the corresponding bottles to be rebuilt and redistributed, add a line of the form `revision 1` to the formula, or add 1 to the revision number already present. If you are not already well versed in the use of `git`, then you may learn about it from the introduction at https://docs.brew.sh/How-To-Open-a-Homebrew-Pull-Request and then proceed as follows: * run `brew edit foo` and make edits * leave the section `bottle do ... end` unchanged * test your changes using the commands listed above * run `git commit` with message formatted `foo <insert new version number>` or `foo: <insert details>` * open a pull request as described in the introduction linked to above, wait for the automated test results, and fix any failing tests Thanks!