lix/tests/functional/lang/eval-okay-inherit-from.nix
pennae a704123ea1 evaluate inherit (from) exprs only once per directive
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).
2024-02-26 15:37:40 +01:00

17 lines
277 B
Nix

let
inherit (builtins.trace "used" { a = 1; b = 2; }) a b;
x.c = 3;
y.d = 4;
merged = {
inner = {
inherit (y) d;
};
inner = {
inherit (x) c;
};
};
in
[ a b rec { x.c = []; inherit (x) c; inherit (y) d; __overrides.y.d = []; } merged ]