Add some `--all` flags we'll eventually migrate to to ensure that we'll
eventually require their usage to read all formulae. Where we need to
do stuff later, add some comments.
Allows you to avoid the `Keg::ConflictError` recommending that you invoke `brew link --overwrite` in scenarios when you know that that's how you'd proceed anyway.
Some setups (e.g. a default `tmux` session) will result in a user
starting multiple nested login shells. This is a problem for the way we
currently handle `shellenv` because a login shell invokes
`/usr/libexec/path_helper` which will prepend the contents of
`/etc/paths` and `/etc/paths.d` to `PATH`. In particular, the second
login shell will place `brew` further down the `PATH` than desired in a
non-`/usr/local` prefix, since `brew shellenv` will no longer produce
output the second time around.
Let's fix this by replacing the check that `brew` is in `PATH` with a
check that `${HOMEBREW_PREFIX}/bin` precedes `/usr/bin` in `PATH`.
Fixes#11851, #11883, Homebrew/discussions#2547.
See also:
- Homebrew/discussions#2237
- https://superuser.com/questions/544989/does-tmux-sort-the-path-variable
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- automatically upgrading outdated dependents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.
Whenever the `sysctl` call does not match `"Apple"*`, we can be sure
that `HOMEBREW_PROCESSOR` is `Intel`, so there's no need for this
additional check.
The previous commit only prevented the installation of an Intel Portable
Ruby into `/opt/homebrew` prefix. Let's actually install an ARM64
Portable Ruby there too.
Since `HOMEBREW_PROCESSOR` is populated using `uname -m`, this will
register as `Intel` even when a native ARM install is running under
Rosetta.
Let's work around this by checking `sysctl -n machdep.cpu.brand_string`.
On my Intel machine:
❯ sysctl -n machdep.cpu.brand_string
Intel(R) Core(TM) i3-1000NG4 CPU @ 1.10GHz
On Apple Silicon:
brew@HMBRW-A-001-M1-001 ~ % sysctl -n machdep.cpu.brand_string
Apple M1
The case of a Rosetta installation of Homebrew is already handled below
the proposed change.
FixesHomebrew/discussions#2434.
