Remove pixell sharp dependency

[msyriac]

This fixes #178

[zonca]

@msyriac feel free to update minimum python in Github Action or notify me to take care of that

[msyriac]

I have now, but there seems to be a numpy related error. I might not have time to look into this until next week!

[itrharrison]

I think the problem is that pixell's setup.py imports various numpy things but that requirement isn't satisfied when the setup gets run.

Adding numpy to the pysm install_requires seems to fix (but ofc I can't push to Mat's fork).

[zonca]

@itrharrison if you'd like to open another PR and fix this it would be much appreciated!

[zonca]

@itrharrison do you have a branch where you tested this?

[itrharrison]

No, sorry, I have been trying but no matter where I add numpy the same problem appears. You can see here:
https://github.com/itrharrison/pysm/pull/1/files

I guess the other option would be for pixell to remove the numpy imports from its setup.py

[zonca]

Thank you very much for your help with this. I was wondering, is it possible this has something to do with numpy 2.0?
Does it make a difference if we set to avoid numpy.2?

[zonca]

@itrharrison maybe we should open a PR on pixell implementing this? @msyriac?
https://stackoverflow.com/questions/19919905/how-to-bootstrap-numpy-installation-in-setup-py

[zonca]

my hope is that putting numpy in setup_requires on pixell fixes this issue

[zonca]

@itrharrison would you like to create a branch of pixell with this fix, then setup Github Actions in your branch of PySM to install pixell from that git branch and see if everything magically works (I know I'm an optimist!).
If so, we (meaning you of course) can then contribute this fix to pixell.