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1{ config, lib, ... }: 2let 3 inherit (lib) types mkOption attrNames; 4in 5{ 6 options = { 7 attrs = mkOption { type = types.attrsOf lib.types.int; }; 8 result = mkOption { }; 9 resultFoo = mkOption { }; 10 resultFooBar = mkOption { }; 11 resultFooFoo = mkOption { }; 12 }; 13 config = { 14 attrs.a = 1; 15 variants.foo.attrs.b = 1; 16 variants.bar.attrs.y = 1; 17 variants.foo.variants.bar.attrs.z = 1; 18 variants.foo.variants.foo.attrs.c = 3; 19 resultFoo = lib.concatMapStringsSep " " toString (attrNames config.variants.foo.attrs); 20 resultFooBar = lib.concatMapStringsSep " " toString ( 21 attrNames config.variants.foo.variants.bar.attrs 22 ); 23 resultFooFoo = lib.concatMapStringsSep " " toString ( 24 attrNames config.variants.foo.variants.foo.attrs 25 ); 26 }; 27}