error:
       … while evaluating the attribute 'drvPath'
         at «https://releases.nixos.org/nixpkgs/nixpkgs-26.11pre1059855.174eb786fb68/nixexprs.tar.xz?narHash=sha256-SpMiSe9OSfWseGAupsdcED3He9mTYTbGMtWb7EVt6pE%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 `driverConfiguration.test_script':

       … while evaluating definitions from `/nix/store/7j2q0l0mrczrm6fiqyx152xdr0hw4s72-source/nixos/lib/testing/driver-configuration.nix':

       … while evaluating the option `testScriptString':

       … while evaluating definitions from `/nix/store/7j2q0l0mrczrm6fiqyx152xdr0hw4s72-source/nixos/lib/testing/testScript.nix':

       … while evaluating the option `testScript':

       … while evaluating definitions from `<unknown-file>':

       … while evaluating definitions from `/nix/store/7x01a1p0nip4syzkr5j50xzwnfq8fyfj-source/modules/clan/module.nix':

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

       error: Flake does not have 'input' named 'nixpkgs'