Some formulae in
homebrew/core are made available as versioned formulae using a special naming format, e.g.
gcc@7. If the version you’re looking for isn’t available, consider using
brew unlink <formula>
This can be useful if a package can’t build against the version of something you have linked into Homebrew’s prefix.
And of course, you can simply
brew link <formula> again afterwards!
Sometimes it’s faster to download a file via means other than the strategies that are available as part of Homebrew. For example, Erlang provides a torrent that’ll let you download at 4–5× compared to the normal HTTP method.
Downloads are saved in the
downloads subdirectory of Homebrew’s cache directory (as specified by
brew --cache, e.g.
~/Library/Caches/Homebrew) and renamed as
<url-hash>--<formula>-<version>. The command
brew --cache --build-from-source <formula> will print the expected path of the cached download, so after downloading the file, you can run
mv the_tarball "$(brew --cache --build-from-source <formula>)" to relocate it to the cache.
You can also pre-cache the download by using the command
brew fetch <formula> which also displays the SHA-256 hash. This can be useful for updating formulae to new versions.
brew sh # or: eval "$(brew --env)" gem install ronn # or c-programs
This imports the
brew environment into your existing shell;
gem will pick up the environment variables and be able to build. As a bonus,
brew’s automatically determined optimization flags are set.
brew install --only-dependencies <formula>
$ brew irb ==> Interactive Homebrew Shell Example commands available with: `brew irb --examples` irb(main):001:0> Formulary.factory("ace").methods - Object.methods => [:install, :test, :test_defined?, :sbin, :pkgshare, :elisp, :frameworks, :kext_prefix, :any_version_installed?, :etc, :pkgetc, ... :on_macos, :on_linux, :debug?, :quiet?, :verbose?, :with_context] irb(main):002:0>
This sets the
HOMEBREW_NO_EMOJI environment variable, causing Homebrew to hide all emoji.
The beer emoji can also be replaced with other character(s):
export HOMEBREW_INSTALL_BADGE="☕️ 🐸"
homebrew-mode provides syntax highlighting for inline patches as well as a number of helper functions for editing formula files.
pcmpl-homebrew provides completion for emacs shell-mode and eshell-mode.