Improve SCCACHE_BASEDIRS support

[sylvestre]

No description provided.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 91.42857% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 72.04%. Comparing base (5154084) to head (aed7d53).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/util.rs	91.42%	3 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2576   +/-   ##
=======================================
  Coverage   72.04%   72.04%           
=======================================
  Files          66       66           
  Lines       36953    36969   +16     
=======================================
+ Hits        26623    26635   +12     
- Misses      10330    10334    +4     

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[codspeed-hq]

CodSpeed Performance Report

Merging this PR will degrade performance by 4.57%

_{Comparing sylvestre:sccache-dir (aed7d53) with main (5154084)}

Summary

❌ 2 regressed benchmarks
✅ 60 untouched benchmarks
⏩ 2 skipped benchmarks¹

⚠️ Please fix the performance issues or acknowledge them on CodSpeed.

Performance Changes

	Mode	Benchmark	BASE	HEAD	Efficiency
❌	Simulation	normalize_win_path_typical	1.6 µs	1.7 µs	-4.57%
❌	Simulation	normalize_win_path_utf8	3.3 µs	3.5 µs	-4.31%

Footnotes

1. 2 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩