Fixing tests failing on MacOS

[andrea-pasquale]

Closes #177 by removing pre-commit and black from dev deps.

Currently tests are failing because there is an issue with the latest release of black on MacOS.

After talking to @alecandido we agreed that actually both black and pre-commit are not needed inside pyproject.toml. In fact pre-commit is not needed inside the environment given that the user could commit outside the environment generated by poetry. The same thing is true for black given that we are using it only with pre-commit.

@scarrazza let me know if you agree.

Checklist:

• Reviewers confirm new code works as expected.
• Tests are passing.
• Coverage does not decrease.
• Documentation is updated.

[codecov]

Codecov Report

Merging #178 (6c83fcd) into main (3da0feb) will not change coverage.
The diff coverage is n/a.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #178   +/-   ##
=======================================
  Coverage   27.28%   27.28%           
=======================================
  Files          17       17           
  Lines         722      722           
=======================================
  Hits          197      197           
  Misses        525      525           

Flag	Coverage Δ
unittests	27.28% <ø> (ø)

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[alecandido]

Just to add a few more details for a future reader:

• concerning pre-commit, you want to commit outside the environment: any IDE will be outside the environment, but also in a terminal you should try to use poetry shell as little as possible, prefer poetry run (that of course only works for single commands, but at least you always know what you are using), and you do not want to commit inside the Poetry shell (also because it is by design an isolated environment, and you can not use any Python CLI installed system or user-wide) - for the CI it is just a useless dependency
• concerning black, instead it's even harmful: if pre-commit and Poetry happen to have two different versions of Black, if you run inside Poetry you will also enter a loop, in which one modify the code one way and the other revert it

[scarrazza]

Thanks, I fully agree.