1616312 - python2 was removed from homebrew

Status: RESOLVED WONTFIX

(Infrastructure & Operations :: RelOps: Posix OS, task)

Description

[:dhouse]

"python2" was removed from homebrew. We still use it. So new installs fail.

This raises two concerns:

1. fix the install
2. can we stop installing python version 2 on workers?

python@2 was deleted from homebrew/core in commit 028f11f9e4:
  python@2: delete (https://github.com/Homebrew/homebrew-core/issues/49796)
  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

To show the formula before removal run:
  git -C "$(brew --repo homebrew/core)" show 028f11f9e4^:Formula/[e-mail]

If you still use this formula consider creating your own tap:
  https://docs.brew.sh/How-to-Create-and-Maintain-a-Tap

Comment 1

[:dhouse]

workaround fix:

brew install "https://raw.githubusercontent.com/Homebrew/homebrew-core/3a877e3525d93cfeb076fc57579bdd589defc585/Formula/[e-mail]"

To use the same install we've been on.

Comment 2

[:dhouse]

Attachment: workaround in puppet

linking to last-state for work-around to install from older homebrew hash when python2 existed.

This is stopped to try removing homebrew again instead (that was then stalled because of higher priority work).

Comment 3

[:dhouse]

The manual workaround I have been performing after reimages is:

cd $(brew --repository)/Library/Taps/homebrew/homebrew-core/
git checkout 3a877e3525d93cfeb076fc57579bdd589defc585
HOMEBREW_NO_AUTO_UPDATE=1 brew install python2

This moves homebrew back to before python2 was removed, and then installs it without updating the local clone.
Then puppet will find it is installed and not try installing it and failing when homebrew cannot find "python2".

We're removing homebrew from the workers. So I'll close this as won't-do