7 type = types.functionTo (types.attrsOf types.str);
10 result = lib.mkOption {
12 default = toString (lib.attrValues (config.fun {
20 config.fun = lib.mkMerge [
21 (input: { inherit (input) a; })
22 (input: { inherit (input) b; })
24 b = lib.mkForce input.c;