Workaround for urllib3 breakage in Mac WPT runtime

[cookiecrook]

Problem

This urllib change:

• Drop support for OpenSSL<1.1.1 urllib3/urllib3#2168

Caused this breakage in WPT:

• Instructions for getting started don't work on macOS wpt#40188

Workaround

Until you update your system, dev tools, etc. to get the latest long-term fixes, this workaround may suffice.

Use homebrew to install a version of Python 3 that is not Python 3.11

brew install python@3.10

Then explicitly point to (or symlink) your python instance when running tests.

/opt/homebrew/opt/python@3.10/libexec/bin/python ./wpt run --log-mach-level debug --log-mach - --webdriver-arg="--diagnose" safari wai-aria

This Stack Overllow page has some helpful tips if you get stuck:
https://stackoverflow.com/questions/51125013/how-can-i-install-a-previous-version-of-python-3-in-macos-using-homebrew

[cookiecrook]

This worked for me. Thanks @gsnedders. I'll leave this issue open til the next meeting in case others are still affected.

[gsnedders]

It should work on WPT tip-of-tree with Xcode Python 3 now, after the latest urllib3 update.

[boazsender]

Discussed in todays meeting, thanks for the PSA!