Add minimal pre-commit config

[olantwin]

Implement #390 .

For now, only local hooks (no CI config).

For now ruff, clang-format and some of the hooks included with pre-commit.

I'll add cmake-format and jsonnet-fmt next.

[olantwin]

@phlexbot yaml-fix

[knoepfel]

@phlexbot yaml-fix

[github-actions]

Automatic YAML formatter fixes pushed (commit 6ac2d04).
⚠️ Note: Some issues may require manual review and fixing.

[knoepfel]

@olantwin, apologies about the YAML format problems. The changes in .github/workflows are not formally related to this PR.

[greenc-FNAL]

Note: we use gersemi in place of cmake-format.

[olantwin]

Note: we use gersemi in place of cmake-format.

Thanks for the pointer! Added.

[olantwin]

Rebased and removed the spurious changes in the .github CI workflows introduced by the yaml bot.

[knoepfel]

@olantwin, thank you for this PR! It will simplify our development workflow in the way we had hoped. I've been testing it locally and encountered a few oddities. I'm not sure they have anything to do with the PR itself or something else...so I'll get back to you on that.

Thank you for patience.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

@@            Coverage Diff             @@
##             main     #406      +/-   ##
==========================================
+ Coverage   83.71%   84.25%   +0.54%     
==========================================
  Files         126      128       +2     
  Lines        3291     3322      +31     
  Branches      583      564      -19     
==========================================
+ Hits         2755     2799      +44     
+ Misses        325      324       -1     
+ Partials      211      199      -12     

Flag	Coverage Δ
unittests	84.25% <ø> (+0.54%)	⬆️

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see 7 files with indirect coverage changes

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[knoepfel]

@olantwin, I pushed some changes to the configuration which, I believe, now brings the PR in line with GitHub actions. After this PR is merged, I will create another PR that applies the changes from pre-commit run --all-files.

[olantwin]

No problem, hope it's going to be useful!

[greenc-FNAL]

Any chance of an addition to DEVELOPING.md describing how to actually activate these hooks locally?

[olantwin]

@greenc-FNAL Thanks for the feedback! I've added a few lines explaining the basic usage to DEVELOPING.md and updated the clang-format version.

[olantwin]

@phlexbot markdown-fix

Changes made by @olantwin in most recent commit

[knoepfel]

We'll deal with the markdown error in a separate PR. Right now, @phlexbot responds only to specific individuals (or individuals on a dedicated team...I can't remember which).

[knoepfel]

Thanks for this @olantwin!