This came up in https://github.com/Homebrew/homebrew-bundle/issues/1108
wherein a user had unwittingly untapped some official taps that get
automatically tapped on first use and couldn't figure out why they
couldn't use the associated command.
There's a few bits of functionality that Homebrew has changed over the
years, makes sense as a sensible default but some people find really
annoying:
- automatically running `brew update`
- automatically running `brew cleanup`
- automatically upgrading outdated dependents
- automatically reinstalling broken dependents
For each of these: let's improve the documentation of the commands
whose behaviour is changed and the environment variables themselves.
- Output `brew doctor` and `brew install` messages noting this configuration is (currently) unsupported and encourage use of Rosetta instead
- Output Rosetta 2 usage in `brew config` on ARM (whether in Rosetta 2 or not)
- Check the architecture of (newly installed) dependencies and ensure they are using the correct architecture.
- Don't allow installing macOS Intel Homebrew in macOS ARM Homebrew default prefix (and vice versa
- Actually write out the architecture of dependencies to the tab rather than generating and throwing them away
- Set and document the expected default prefix for macOS Intel Homebrew, macOS ARM Homebrew (`/opt/homebrew`) and Homebrew on Linux
While we're here:
- Don't say Big Sur is a prerelease version but still make it clear we
don't support it (yet).
- Don't reference non-existent IRC channel
Previously, running e.g. `brew help bundle` when homebrew-bundle was not
tapped would tap homebrew-bundle and then run `brew bundle` showing
`Error: No Brewfile found` instead of the expected help text.
Align the logic in `cleanup_portable_ruby` with that in `ruby.sh`.
Co-authored-by: Maxim Belkin <maxim.belkin@gmail.com>
Co-authored-by: Mike McQuaid <mike@mikemcquaid.com>
