Missing pixell dependency

[sbiquard]

Only the "test" optional dependencies contain the pixell==0.26.0 requirement.

But clearly, the package is used in several places in the code, such as in

pysm/src/pysm3/utils/spherical_harmonics.py

Line 6 in 3360329

import pixell.enmap, pixell.curvedsky

which is where I got an ImportError from.

I guess the fix should be as simple as moving the dependency to the main group in pyproject.toml, but maybe I'm missing something.

Let me know if you'd like me to submit the pull request.

[zonca]

thanks @sbiquard ,

no, we want to be able to run healpix-only with no pixell.
Can you please do a pull request making a conditional import in that file like I have in template.py?

[zonca]

fixed in #208

[zonca]

Thanks!