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packaging: Make patch count lazier
This makes `nix.version` quicker to evaluate, which should speed up package listing operations. If you want an accurate count, use `lib.optionals` in your override instead of `null` values.
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@ -102,7 +102,7 @@ let
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src = finalScope.patchedSrc;
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src = finalScope.patchedSrc;
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version =
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version =
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let
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let
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n = lib.count (p: p != null) finalScope.patches;
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n = lib.length finalScope.patches;
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in
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in
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if n == 0 then finalAttrs.version else finalAttrs.version + "+${toString n}";
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if n == 0 then finalAttrs.version else finalAttrs.version + "+${toString n}";
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