twisted-alike (so similar) automatic publishing on gha

[altendky]

Stalled on:

• Add build-system to pyproject.toml for pep517 (tox-wheel) #314 Add build-system to pyproject.toml for PEP 517 (-m build) #323 (probably) is needed as the Twisted setup this comes from uses PEP 517 builds.
• If going with Add build-system to pyproject.toml for PEP 517 (-m build) #323 then the wheel and sdist are already built and should just be checked and uploaded.

[codecov]

Codecov Report

Merging #315 (e7a136c) into master (499c8f7) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #315   +/-   ##
=======================================
  Coverage   96.78%   96.78%           
=======================================
  Files          20       20           
  Lines        1183     1183           
  Branches      106      106           
=======================================
  Hits         1145     1145           
  Misses         20       20           
  Partials       18       18           

Impacted Files	Coverage Δ
src/towncrier/_version.py	100.00% <100.00%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 499c8f7...e7a136c. Read the comment docs.

[adiroiban]

This looks good.
For validating this PR my suggestion is to first push something like 11.1dev1 tag to check that the publish is blocked due to tag mismatch.

Then update the version to 21.3.dev1 and push that tag to make sure publishing to public repo works.

Then we can merge this and delete the dev1 release from PyPi.

Thanks!

[altendky]

Working tagged build (PyPI)
Failing build due to incorrect tag
Same commit as above tagged properly (PyPI)

[adiroiban]

Wonderful work. Thanks! Looking forward to the public release :)

[adiroiban]

why double ? just asking :)

[altendky]

https://docs.github.com/en/actions/reference/workflow-syntax-for-github-actions#filter-pattern-cheat-sheet

*: Matches zero or more characters, but does not match the / character. For example, Octo* matches Octocat.
**: Matches zero or more of any character.

So it will match even if the tag ends up having a / in it. Not something we need, just my default at this point when saying 'anything'.

[adiroiban]

Maybe use dev4 as this was the last released ?

Suggested change

	__version__ = Version("towncrier", 21, 3, 0, dev=1)
	__version__ = Version("towncrier", 21, 3, 0, dev=4)

[altendky]

Huh... I definitely didn't mean to do this, lemme find where I lost that. Thanks.

[altendky]

Yeah, merge and fork and branch and PR and everything more confusion. Sorry, thanks. There was something else missing so this is a good catch.

149c27f