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99 lines
3.0 KiB
Markdown
99 lines
3.0 KiB
Markdown
# Homebrew
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## TL;DR
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```shell
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# install/uninstall on os x
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/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
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/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/uninstall)"
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# prevent a formula from upgrading
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brew pin gnupg2
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# bring an installation up to speed from a Brewfile
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brew bundle
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brew bundle --global
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brew bundle --file $HOME/Brewfile --no-lock
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# dump all installed casks/formulae/images/taps into a Brewfile in the current directory
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brew bundle dump
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```
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## Configuration
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```shell
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# require SHA check for casks
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# change cask installation dir to the Application folder in the user HOME
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export HOMEBREW_CASK_OPTS="--require-sha --appdir $HOME/Applications"
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# print install times for each formula at the end of the run
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export HOMEBREW_DISPLAY_INSTALL_TIMES=1
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# do not automatically update before running some commands
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export HOMEBREW_NO_AUTO_UPDATE=1
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# do not print HOMEBREW_INSTALL_BADGE on a successful build
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export HOMEBREW_NO_EMOJI=1
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# do not use the GitHub API
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# avoid searches or fetching relevant issues after a failed install
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export HOMEBREW_NO_GITHUB_API=1
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# forbid redirects from secure HTTPS to insecure HTTP
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export HOMEBREW_NO_INSECURE_REDIRECT=1
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# only list updates to installed software
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export HOMEBREW_UPDATE_REPORT_ONLY_INSTALLED=1
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# pass the -A option when calling sudo
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export SUDO_ASKPASS=1
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```
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## Downgrade an application to a non-managed version
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### The easy way
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```sh
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brew unlink kubernetes-helm
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#install version 2.13.0
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brew install https://raw.githubusercontent.com/Homebrew/homebrew-core/ed9dcb2cb455a816f744c3ad4ab5c18a0d335763/Formula/kubernetes-helm.rb
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brew switch kubernetes-helm 2.13.0
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```
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### The hard way
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[source](https://stackoverflow.com/questions/3987683/homebrew-install-specific-version-of-formula)
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[alternative source](https://www.fernandomc.com/posts/brew-install-legacy-hugo-site-generator/)
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```sh
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formula_name='kubernetes-helm'
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formula_version='2.13.1'
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cd $(brew --repository)/Library/Tapshomebrew/homebrew-core
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git log master -S${formula_version} -- Formula/${formula_name}.rb
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commit_id='<something>' # insert commit id
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git checkout -b ${formula_name}-${formula_version} ${commit_id}
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HOMEBREW_NO_AUTO_UPDATE=1 brew install ${formula_name}
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# pin application if needed
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git checkout master
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git branch -d ${formula_name}-${formula_version}
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```
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## Gotchas
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- `moreutils` installs its own old version of `parallel`, which conflicts with the `parallel` formulae; install the standalone `gettext`, `parallel` and `sponge` to have their recent version
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## Further readings
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- [How to stop homebrew from upgrading itself on every run]
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- [macOS migrations with Brewfile]
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- [manpage]
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- Homebrew [bundle]
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[bundle]: https://github.com/Homebrew/homebrew-bundle
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[how to stop homebrew from upgrading itself on every run]: https://superuser.com/questions/1209053/how-do-i-tell-homebrew-to-stop-running-brew-update-every-time-i-want-to-install/1209068#1209068
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[macos migrations with brewfile]: https://openfolder.sh/macos-migrations-with-brewfile
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[manpage]: https://docs.brew.sh/Manpage
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