Add publishing workflow to GH Actions

[dhomeier]

Description

Follow-up to #82 adding a publish_pure_python job.

[codecov]

Codecov Report

Merging #86 (cf34c3f) into main (101e94a) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main      #86   +/-   ##
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  Coverage   71.97%   71.97%           
=======================================
  Files          18       18           
  Lines         860      860           
=======================================
  Hits          619      619           
  Misses        241      241           

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[dhomeier]

Any thoughts why the test_extras are not installing their PyQt dependencies? Might be because pip install QtPy by itself does not install a working backend, so maybe the install_requires explicitly need PyQt5 (or something like PyQt5 | PySide2)?

[dhomeier]

I suppose there is no subset of tests working without a backend, since the core package cannot even be imported?
Shall I cut the tests until it is possible to set up a headless display in the publishing tests?

[astrofrog]

Yes can we just make the publish job be contingent on the main test matrix passing instead?

[dhomeier]

Oh; got the test_command working now (see comment in matrix).

Nonetheless having one job being contingent on another would in fact be useful (like for the minimal/extended test configurations), but I haven't found anything on how to do this so far.

[astrofrog]

Looks good thanks! I'll send a message later showing how to have dependent jobs

[astrofrog]

I'll merge this for now, we can do the dependent stuff later