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cefd0302b5
desugaring inherit-from to syntactic duplication of the source expr also duplicates side effects of the source expr (such as trace calls) and expensive computations (such as derivationStrict).
17 lines
277 B
Nix
17 lines
277 B
Nix
let
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inherit (builtins.trace "used" { a = 1; b = 2; }) a b;
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x.c = 3;
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y.d = 4;
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merged = {
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inner = {
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inherit (y) d;
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};
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inner = {
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inherit (x) c;
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};
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};
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in
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[ a b rec { x.c = []; inherit (x) c; inherit (y) d; __overrides.y.d = []; } merged ]
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