I briefly mentioned arcanist in a previous article. It is a command line tool that wraps around git, hg, and svn and provides some handy features for working on a shared codebase. It is meant to be used in conjunction with phabricator, and all my examples assume that situation. As I mentioned previously, a typical workflow while using arc might look something like this: Create a local branch git checkout -b mygreatfeature hack on that branch Run arc lint to run your changes through several possible code linters Run arc unit to run the unit tests that are associated with your changes Run arc diff to submit your patch for review (Note: just running arc diff will call both the lint and the unit test steps if you have them configured)