warning: Git tree '/home/roland/poetry2nix-testing' is dirty
error:
       … while calling the 'derivationStrict' builtin

         at /builtin/derivation.nix:9:12: (source not available)

       … while evaluating derivation 'nix-shell'
         whose name attribute is located at /nix/store/zvagwsz0p07n3i0h2hi193ny4zmvry57-source/pkgs/stdenv/generic/make-derivation.nix:336:7

       … while evaluating attribute 'buildInputs' of derivation 'nix-shell'

         at /nix/store/zvagwsz0p07n3i0h2hi193ny4zmvry57-source/pkgs/stdenv/generic/make-derivation.nix:383:7:

          382|       depsHostHost                = elemAt (elemAt dependencies 1) 0;
          383|       buildInputs                 = elemAt (elemAt dependencies 1) 1;
             |       ^
          384|       depsTargetTarget            = elemAt (elemAt dependencies 2) 0;

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

       error: pytest-runner has been removed as it uses deprecated features of setuptools and is deprecated by upstream
