Improve compare performance #377434
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6.topic: continuous integration
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mweinelt
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Various improvements such as: 1. Avoiding deduplications when there can't be any duplicates 2. Avoiding O(n^2) deduplications 3. Using builtins.any to avoid list allocations 4. Using builtins.concatMap instead of lib.flatten when it's known that there's only one level of nesting 5. Using builtins.groupBy instead of folding with an accumulator In particular 5. should fix CI exceeding the stack size on staging: https://github.com/NixOS/nixpkgs/actions/runs/12989244871/job/36240781244?pr=377253 While 2. in particular should make CI a lot faster.
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Various improvements such as:
In particular 5. should fix CI exceeding the stack size on staging: https://github.com/NixOS/nixpkgs/actions/runs/12989244871/job/36240781244?pr=377253
While 2. in particular should make CI a lot faster.
Thanks for the report, @mweinelt!
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