This improves the load time of most brew commands. For an example of
one of the simplest commands this speeds up:
Without Bootsnap:
```
$ hyperfine 'git checkout master; brew help' 'git checkout optimise_requires; brew help'
Benchmark 1: git checkout master; brew help
Time (mean ± σ): 525.0 ms ± 35.8 ms [User: 229.9 ms, System: 113.1 ms]
Range (min … max): 465.3 ms … 576.6 ms 10 runs
Benchmark 2: git checkout optimise_requires; brew help
Time (mean ± σ): 383.3 ms ± 25.1 ms [User: 133.0 ms, System: 72.1 ms]
Range (min … max): 353.0 ms … 443.6 ms 10 runs
Summary
git checkout optimise_requires; brew help ran
1.37 ± 0.13 times faster than git checkout master; brew help
```
With Bootsnap:
```
$ hyperfine 'git checkout master; brew help' 'git checkout optimise_requires; brew help'
Benchmark 1: git checkout master; brew help
Time (mean ± σ): 386.0 ms ± 30.9 ms [User: 130.2 ms, System: 93.8 ms]
Range (min … max): 359.5 ms … 469.3 ms 10 runs
Benchmark 2: git checkout optimise_requires; brew help
Time (mean ± σ): 330.2 ms ± 32.4 ms [User: 93.4 ms, System: 73.0 ms]
Range (min … max): 302.9 ms … 413.9 ms 10 runs
Summary
git checkout optimise_requires; brew help ran
1.17 ± 0.15 times faster than git checkout master; brew help
```
When either being in a non-default prefix or being on an unsupported
macOS version we expect most things to be built from source. In that
environment, do not allow HOMEBREW_INSTALL_FROM_API to be set.
Fixes#14475
- Change `LINUX_CI_OS_VERSION` from `Ubuntu 16.04` to `Ubuntu 22.04`
- Change `LINUX_GLIBC_CI_VERSION` from `2.23` to `2.35`
- Change `LINUX_GCC_CI_VERSION` from `5.0` to `11.0`
- Change `LINUX_PREFERRED_GCC_FORMULA` from `gcc@5` to `gcc@11`
- Build the Docker image `ghcr.io/homebrew/ubuntu22.04:master`
This will allow us to replace code like
os = if OS.mac?
"Darwin"
else
"Linux"
end
with a call to `OS.uname`. Doing
rg '= (if )?OS\.(mac|linux)\?'
returns about 70 matches, so there are probably at least a handful of
formulae that could be simplified by this.
- `download_strategy`: only request image index JSON for downloading
the manifest for the tab
- use a shared `OS` constant for the version of `glibc` we use in CI
- fix `skoepeo` typo
- ensure that blank hash values are deleted (again) rather than just
`nil` ones
- use a shared `Hardware::CPU` constant for oldest CPU we're
supporting/using on Intel 64-bit
- re-add comment to `software_spec`
Define MacOS.version, MacOS.full_version, and MacOS::Xcode.version to
Version::NULL on Linux so that brew readall succeeds and Homebrew/brew
can tap Homebrew/core on Linux.
The existing one has two issues:
* It doesn't reflect Linuxbrew's move to a separate GitHub org
* It redirects to the legacy-linuxbrew (pre-core/brew split) wiki
If the environment variable HOMEBREW_TEST_GENERIC_OS is set ensure that
neither Mac nor Linux-specific code is loaded. This allows easier
testing of cross-platform code on OS X and will make it easier to port
Homebrew to platforms other than OS X and Linux.
Generally it seems user agents are all `software/version` but ours is
not. Also, set the user agent in a way that it's shared between Bash
and Ruby code.
Closes https://github.com/Homebrew/legacy-homebrew/pull/50480.
