brew tap adds more repositories to the list of formulae that
brew tracks, updates,
and installs from. By default,
tap assumes that the repositories come from GitHub,
but the command isn’t limited to any one location.
brew tapwithout arguments lists the currently tapped repositories. For example:
$ brew tap homebrew/core mistydemeo/tigerbrew dunn/emacs
brew tap <user/repo> makes a shallow clone of the repository at
https://github.com/user/repo. After that,
brew will be able to work on
those formulae as if they were in Homebrew’s canonical repository. You can
install and uninstall them with
brew [un]install, and the formulae are
automatically updated when you run
brew update. (See below for details
brew tap handles the names of repositories.)
brew tap <user/repo> <URL> makes a shallow clone of the repository at URL.
Unlike the one-argument version, URL is not assumed to be GitHub, and it
doesn’t have to be HTTP. Any location and any protocol that Git can handle is
--full to either the one- or two-argument invocations above, and Git
will make a complete clone rather than a shallow one. Full is the default for
brew tap --repair migrates tapped formulae from a symlink-based to
directory-based structure. (This should only need to be run once.)
brew untap user/repo [user/repo user/repo ...] removes the given taps. The
repositories are deleted and
brew will no longer be aware of their formulae.
brew untap can handle multiple removals at once.
On GitHub, your repository must be named
homebrew-something in order to use
the one-argument form of
brew tap. The prefix ‘homebrew-‘ is not optional.
(The two-argument form doesn’t have this limitation, but it forces you to
give the full URL explicitly.)
When you use
brew tap on the command line, however, you can leave out the
‘homebrew-‘ prefix in commands.
brew tap username/foobar can be used as a shortcut for the long
brew tap username/homebrew-foobar.
brew will automatically add
back the ‘homebrew-‘ prefix whenever it’s necessary.
If your tap contains a formula that is also present in
homebrew/core, that’s fine,
but it means that you must install it explicitly by default.
If you would like to prioritise a tap over
homebrew/core, you can use
brew tap-pin username/repo to pin the tap,
brew tap-unpin username/repo to revert the pin.
brew install foo command is issued,
brew will find which formula
to use by searching in the following order:
If you need a formula to be installed from a particular tap, you can use fully qualified names to refer to them.
For example, you can create a tap for an alternative
vim formula. Without
pinning it, the behaviour will be
brew install vim # installs from homebrew/core brew install username/repo/vim # installs from your custom repo
However if you pin the tap with
brew tap-pin username/repo, you will need to
homebrew/core to refer to the core formula.
brew install vim # installs from your custom repo brew install homebrew/core/vim # installs from homebrew/core
Do note that pinned taps are prioritized only when the formula name is directly given by you, i.e. it will not influence formulae automatically installed as dependencies.