homebrew and linuxbrew formula Notes

TOC

• Working with Python 2.x / 3.x
  • Python Useful Links
• Build time options / parameters
• Useful Links
• TODOs

Working with Pythons - 2.x 3.x

Homebrew can install concurrent Pythons on the local system.

Homebrew seperates the pythons by creating seperate binaries, ie. python 2.x is located at

/usr/local/opt/python/libexec/bin/python

and python 3.x is located at

/usr/local/bin/python3

Both pythons use a seperate pip package to manage python dependencies, ie. python 2.x uses

/usr/local/opt/python/libexec/bin/pip

and python 3.x uses

/usr/local/bin/pip3

Python Useful Links

Homebrew documentation - Python

Build time options / parameters

To show build time options for a homebrew formula

brew info [mr_fancy_pants_formula]

brew info weechat

Working with homebrew casks

To install a brew formula from a cask, ie. kodi

brew search kodi

Output:

brew search kodi                                                                    0 < 14:24:28
==> Searching local taps...
==> Searching taps on GitHub...
caskroom/cask/kodi                                 caskroom/versions/kodi-development
==> Searching blacklisted, migrated and deleted formulae...

Then to install kodi

brew cask install kodi

---

Homebrew 🍻 formula are stored in the following location on macOS (10.12.6)

/usr/local/Homebrew/Library/Taps/homebrew/homebrew-core/Formula/

However, linuxbrew formula are more than likely located at the below path on Debian Jessie

/home/linuxbrew/.linuxbrew/Homebrew/Library/Taps/homebrew/homebrew-core/Formula/

To edit a formula, make sure the $EDITOR environment variable is set to your favorite text editor. ie. in the fish shell,

set -x EDITOR /path/to/your/favorite/editor

Example

set -x EDITOR /home/linuxbrew/.linuxbrew/bin/nvim

Then one can edit the formula of choosing with the below command,

brew edit <name_of_formula.rb>

Example

brew edit weechat.rb

To list all installed packages with homebrew 🍻

brew list
brew cask list

To get the SHA 256 hash of a file

shasum -a 256 <name_of_file> | awk '{printf $1}' | pbcopy

Useful Links 🔗

• Official - search for formula
• How to Create and Maintain a Tap
  
• Formula Cookbook for developers
  
• Python for Formula Authors
  
• A deep dive 🏊 into homebrew dependencies

TODOs

• add entries to table of contents for this .md file
• figure out which binaries belong to which packages, ie. which package installed locate