error:
       … while evaluating the attribute 'drvPath'
         at «github:NixOS/nixpkgs/8ce4ef6cb6f871616146b9fe26d2a5ae594e94fe?narHash=sha256-xB8mKMOx1IA9vTDNLmJZ6n4wCMq/cuWBBOzGCRnqxrU%3D»/lib/customisation.nix:416:11:
          415|         // {
          416|           drvPath =
             |           ^
          417|             assert condition;

       … while calling the 'derivationStrict' builtin
         at «nix-internal»/derivation-internal.nix:37:12:
           36|
           37|   strict = derivationStrict drvAttrs;
             |            ^
           38|

       … while evaluating the option `driverConfigurationFile':

       … while evaluating the option `driverConfiguration.vms.sophia.start_script':

       … while evaluating definitions from `/nix/store/wr3njgpzrbmxfcdys91h0x23i9v12551-source/nixos/lib/testing/driver-configuration.nix':

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

       … while evaluating definitions from `/nix/store/wr3njgpzrbmxfcdys91h0x23i9v12551-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/z9qmbadbjnapcnsl7ln886ilph8zvcs0-source/hosts/sophia/default.nix' no longer has any effect; please remove it.
       Use services.journald.settings.Journal instead.