error:
       … while evaluating the attribute 'drvPath'
         at «https://releases.nixos.org/nixpkgs/nixpkgs-26.11pre1015397.173d0ad7a974/nixexprs.tar.xz?narHash=sha256-hCafbexZ0iZ/7QYkKWxCxviTU%2Bc0PDhkieiUVVPCHtY%3D»/lib/customisation.nix:415:11:
          414|         // {
          415|           drvPath =
             |           ^
          416|             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.ecl-alpha.start_script':

       … while evaluating definitions from `/nix/store/lr5ld8f0qbyhjx3nr9mxfvg4cndvpggp-source/nixos/lib/testing/driver-configuration.nix':

       … while evaluating the option `nodes.ecl-alpha.environment.etc."resolv.conf".source':

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

       error: The option `nodes.ecl-alpha.environment.etc."resolv.conf".source' has conflicting definition values:
       - In `/nix/store/lr5ld8f0qbyhjx3nr9mxfvg4cndvpggp-source/nixos/modules/system/etc/etc.nix': <derivation etc-resolv.conf>
       - In `/nix/store/lr5ld8f0qbyhjx3nr9mxfvg4cndvpggp-source/nixos/modules/system/boot/resolved.nix': "/run/systemd/resolve/stub-resolv.conf"
       Use `lib.mkForce value` or `lib.mkDefault value` to change the priority on any of these definitions.