error:
       … while evaluating a branch condition
         at «string»:25:5:
           24|     v:
           25|     if !builtins.isAttrs v || isDrv v then
             |     ^
           26|       v

       … in the left operand of the OR (||) operator
         at «string»:25:28:
           24|     v:
           25|     if !builtins.isAttrs v || isDrv v then
             |                            ^
           26|       v

       … while evaluating definitions from `/nix/store/9iv83r72z5xwgylkwms1qip1ijnr6jqs-source/modules/transposition.nix':

       … while evaluating definitions from `/nix/store/bm1xwp1id3kk7hr56wvbsc63r0kx32x6-source/checks/flake-module.nix, via option perSystem':

       … while evaluating the option `system.build.toplevel':

       … while evaluating definitions from `/nix/store/4h2cj19n104pslz9qdd10km9gql80fkz-source/nixos/modules/system/activation/top-level.nix':

       (stack trace truncated; use '--show-trace' to show the full, detailed trace)

       error:
       Failed assertions:
       - The option definition `services.journald.extraConfig' in `/nix/store/bm1xwp1id3kk7hr56wvbsc63r0kx32x6-source/modules/flake-module.nix, via option flake.nixosModules.server' no longer has any effect; please remove it.
       Use services.journald.settings.Journal instead.