python@2: delete

[iMichka]

EOL 1 January 2020.
We gave it 1 month more to live so that people had time to migrate.
All in all, developers had 11 years to do their migration.

You can use the brew extract command and maintain python@2 in your own
tap if necessary:
https://docs.brew.sh/How-to-Create-and-Maintain-a-Tap

• Have you followed the guidelines for contributing?
• Have you checked that there aren't other open pull requests for the same formula update/change?
• Have you built your formula locally with brew install --build-from-source <formula>, where <formula> is the name of the formula you're submitting?
• Is your test running fine brew test <formula>, where <formula> is the name of the formula you're submitting?
• Does your build pass brew audit --strict <formula> (after doing brew install <formula>)?

---

[iMichka]

As decided during FOSDEM with the other maintainers, and announced here:
https://twitter.com/MacHomebrew/status/1224356881122189313

We will remove python@2 on Monday February 10.

[SMillerDev]

Needs the alias removed too

[lithammer]

Are the bottles also removed? I guess what I'm asking is, would it make sense to keep this in a tap?

  bottle do
    sha256 "accfaa922708f00afb69ab230199f96e6ecdddd248a1eca586ce1e5e5cfd732b" => :catalina
    sha256 "54d3351d6be8268b2f5017894dcc8e083811dfa3812bdb9f79f989873b9a4542" => :mojave
    sha256 "cfd5c6eeac37065d19f527bb0798a9caf1928bab3340cd545224861a3c82f219" => :high_sierra
  end

[SMillerDev]

They might be removed, they might be removed in the future. Bottles are only supposed to work for the current formula.

[Stargator]

The problem is, I have some a brew formula that depends on python@2. libimobiledevice. SoI learned that python@2 was removed when I updated Homebrew and now extract is not working.

So is there another way to put it in a tap?

[SMillerDev]

If it's for macOS, the OS also ships with a python 2 version.
If that's not possible, maybe you can just copy an older revision of the python 2 formula in the github UI to your tap?

[benmwebb]

Just FYI, https://docs.brew.sh/Homebrew-and-Python still says Homebrew provides python@2. brew info python also recommends brew install python@2. And the each_python function in /usr/local/Homebrew/Library/Homebrew/language/python.rb fails because it looks for python@2.

[SMillerDev]

@iMichka got time to fix that?

[iMichka]

I'm working on a PR for brew.

[iMichka]

And the each_python function in /usr/local/Homebrew/Library/Homebrew/language/python.rb fails because it looks for python@2.

I can’t reproduce this. Can you give an example?

[iMichka]

See Homebrew/brew#7019 for the documentation and code update in brew.

[benmwebb]

And the each_python function in /usr/local/Homebrew/Library/Homebrew/language/python.rb fails because it looks for python@2.

I can’t reproduce this. Can you give an example?

Sure:

brew update
brew edit pkg-config

Modify the test section to read

  test do
    system "#{bin}/pkg-config", "--libs", "libpcre"
    Language::Python.each_python(build) do |python, version|
      system python
    end
  end

Then brew test pkg-config fails with

Testing pkg-config
==> /usr/local/Cellar/pkg-config/0.29.2/bin/pkg-config --libs libpcre
Error: pkg-config: failed
An exception occurred within a child process:
  FormulaUnavailableError: No available formula with the name "python@2" 
/usr/local/Homebrew/Library/Homebrew/formulary.rb:294:in `get_formula'
/usr/local/Homebrew/Library/Homebrew/formulary.rb:331:in `factory'
/usr/local/Homebrew/Library/Homebrew/language/python.rb:33:in `block in each_python'
/usr/local/Homebrew/Library/Homebrew/language/python.rb:32:in `each'
/usr/local/Homebrew/Library/Homebrew/language/python.rb:32:in `each_python'
/usr/local/Homebrew/Library/Taps/homebrew/homebrew-core/Formula/pkg-config.rb:37:in `block in <class:PkgConfig>'
/usr/local/Homebrew/Library/Homebrew/formula.rb:1756:in `block (3 levels) in run_test'
/usr/local/Homebrew/Library/Homebrew/utils.rb:478:in `with_env'
/usr/local/Homebrew/Library/Homebrew/formula.rb:1755:in `block (2 levels) in run_test'
/usr/local/Homebrew/Library/Homebrew/formula.rb:865:in `with_logging'
/usr/local/Homebrew/Library/Homebrew/formula.rb:1754:in `block in run_test'
/usr/local/Homebrew/Library/Homebrew/formula.rb:1993:in `block in mktemp'
/usr/local/Homebrew/Library/Homebrew/mktemp.rb:57:in `block in run'
/usr/local/Homebrew/Library/Homebrew/mktemp.rb:57:in `chdir'
/usr/local/Homebrew/Library/Homebrew/mktemp.rb:57:in `run'
/usr/local/Homebrew/Library/Homebrew/formula.rb:1992:in `mktemp'
/usr/local/Homebrew/Library/Homebrew/formula.rb:1748:in `run_test'
/usr/local/Homebrew/Library/Homebrew/test.rb:33:in `block in <main>'
/usr/local/Homebrew/Library/Homebrew/vendor/portable-ruby/2.6.3/lib/ruby/2.6.0/timeout.rb:93:in `block in timeout'
/usr/local/Homebrew/Library/Homebrew/vendor/portable-ruby/2.6.3/lib/ruby/2.6.0/timeout.rb:33:in `block in catch'
/usr/local/Homebrew/Library/Homebrew/vendor/portable-ruby/2.6.3/lib/ruby/2.6.0/timeout.rb:33:in `catch'
/usr/local/Homebrew/Library/Homebrew/vendor/portable-ruby/2.6.3/lib/ruby/2.6.0/timeout.rb:33:in `catch'
/usr/local/Homebrew/Library/Homebrew/vendor/portable-ruby/2.6.3/lib/ruby/2.6.0/timeout.rb:108:in `timeout'
/usr/local/Homebrew/Library/Homebrew/test.rb:32:in `<main>'