feat(isolation): use normalize_lexically for paths

[n0toose]

This resolves a TODO for removing clean_path as a dependency.

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Feature not stabilized just yet, but made in advance due to #1135.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 76.97%. Comparing base (2d429c6) to head (449565d).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1136      +/-   ##
==========================================
+ Coverage   76.95%   76.97%   +0.02%     
==========================================
  Files          28       28              
  Lines        3393     3396       +3     
==========================================
+ Hits         2611     2614       +3     
  Misses        782      782              

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[fogti]

You'll have to adjust uses: dtolnay/rust-toolchain@stable in the CI workflow files to uses: dtolnay/rust-toolchain@nightly.

[n0toose]

You'll have to adjust uses: dtolnay/rust-toolchain@stable in the CI workflow files to uses: dtolnay/rust-toolchain@nightly.

Yeah, it's a very preliminary pull request to demonstrate how I'd remove clean, given that you're working on top of the same components and now that an unstable implementation exists. :)

I'm not sure if we wish to switch to nightly.