mikelxc/Workarounds-for-ARM-mac

Python3.9 Install

Opened this issue · 4 comments

mwidjaja1 commented

Hey I tried installing Python3.9 from an ARM Homebrew install at /opt/homebrew and while the install 'finished', the postinstall did not, crashing in these two places:

ModuleNotFoundError: No module named '_posixsubprocess'
ModuleNotFoundError: No module named 'setuptools'

I'm just curious, did you do anything fancy when installing your Python3.9 to get it working?

drewwells commented

Yes, apply this delta locally and it will work https://github.com/Homebrew/homebrew-core/pull/65866/files . Looks like the longterm solution will take a bit to correct.

mwidjaja1 commented

Thanks for that tip, I'll try it out! I'm embarrassed to ask but uh... where do I modify that .rb file and how do I install from it? Do I just make a local copy straight up from the repo or is there a more proper answer?

Thanks!

drewwells commented

I just edit it in place. I think the default location of home-brew is /usr/local/homebrew... but they recommend using /opt/homebrew while things are being worked out. It's here on my computer /opt/homebrew/Library/Taps/homebrew/homebrew-core/Formula/python.rb

drewwells commented

Homebrew will note that the file is out of sync and revert it on upgrades, which is a pain. You can remove git's index of the file if you're needing to upgrade python@3.9 a lot. I imagine a fix is coming soon.