ModuleNotFoundError: No module named 'setuptools'

[Kukkerem]

Hello,

I'm impressed by your project and wanted to try it out on an existing tool to have a more stable docker image build, which sometimes fails for some reason. I have tried using your example and this very fresh repo to move on, but I need to figure out how to solve a persistent error.

After the project creation, I can use nix develop to add dependencies to poetry on the command line and run poetry build without a problem. Still, after I'm trying to rerun nix develop or use nix build, I'm getting this error:

$ nix build
error: builder for '/nix/store/rx8kcm1qm64i49ndavicpb6n9pm7c227-python3.11-webdriver-manager-4.0.0.drv' failed with exit code 2;
       last 10 log lines:
       >   File "<frozen importlib._bootstrap>", line 1204, in _gcd_import
       >   File "<frozen importlib._bootstrap>", line 1176, in _find_and_load
       >   File "<frozen importlib._bootstrap>", line 1126, in _find_and_load_unlocked
       >   File "<frozen importlib._bootstrap>", line 241, in _call_with_frames_removed
       >   File "<frozen importlib._bootstrap>", line 1204, in _gcd_import
       >   File "<frozen importlib._bootstrap>", line 1176, in _find_and_load
       >   File "<frozen importlib._bootstrap>", line 1140, in _find_and_load_unlocked
       > ModuleNotFoundError: No module named 'setuptools'

The current modifications are on this branch:
https://github.com/Kukkerem/lightnovel-crawler/tree/nix-cde

I have tried to install setuptools with dev_commandsa and dev_apps and modified the build-system requirements in the pyproject.toml file. I don't have any other ideas/leads.

Could you please help me with this issue?

[takeda]

So this is somewhat common issue with nix and it is due to build dependencies needing to be specified.

To get yourself unblocked you can add override:

  python = {
    enable = true;
    ...
    overrides = self: super: {
      webdriver-manager = super.webdriver-manager.overridePythonAttrs (old: {
        nativeBuildInputs = (old.nativeBuildInputs or []) ++ [
          self.setuptools
        ];
      });
    };
  }

Long term fix would be to make a PR and modify: https://github.com/nix-community/poetry2nix/blob/master/overrides/build-systems.json

Once I bump versions in flake.lock (or you have your branch updated) then above override won't be needed anymore.

If you don't want to create own branch. You could also add to flake.nix:

{
    inputs = {
      ...
      poetry2nix.url = "github:nix-community/poetry2nix";
      nix-cde.inputs.poetry2nix.follows = "poetry2nix";
    };
};

[Kukkerem]

It's working with overrides, and I will probably contribute it to poetry2nix. Thank you very much!