chore(flake): Add setuptools in order to build on a minimal Nix system

[acovaci]

Please tick as appropriate:

• I have tested this code on a steam deck or on a PC
• My changes generate no new errors/warnings
• This is a bugfix/hotfix
• This is a new feature

Description

This is a very basic change to the flake.nix file, fixing a failure to activate the Nix shell due to missing setuptools on my system. A completely fresh Nix environment would not have any python packages installed, so I added it, in order to build propcache.

error: builder for '/nix/store/3kvfya2v3vnvbiglh2a5qyh2rai39w3f-python3.11-propcache-0.2.0.drv' failed with exit code 2;
       last 25 log lines:
       >            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
       >   File "/nix/store/hj15fswklkqnsdyqhgap248j7c88kxx9-python3.11-pip-24.0/lib/python3.11/site-packages/pip/_vendor/pyproject_hooks/_impl.py", line 186, in prepare_metadata_for_build_wheel
       >     return self._call_hook('prepare_metadata_for_build_wheel', {
       >            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
       >   File "/nix/store/hj15fswklkqnsdyqhgap248j7c88kxx9-python3.11-pip-24.0/lib/python3.11/site-packages/pip/_vendor/pyproject_hooks/_impl.py", line 321, in _call_hook
       >     raise BackendUnavailable(data.get('traceback', ''))
       > pip._vendor.pyproject_hooks._impl.BackendUnavailable: Traceback (most recent call last):
       >   File "/nix/store/hj15fswklkqnsdyqhgap248j7c88kxx9-python3.11-pip-24.0/lib/python3.11/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 77, in _build_backend
       >     obj = import_module(mod_path)
       >           ^^^^^^^^^^^^^^^^^^^^^^^
       >   File "/nix/store/6b1fqdwb3g56j5pazv8zkx9qd0mv3wiz-python3-3.11.9/lib/python3.11/importlib/__init__.py", line 126, in import_module
       >     return _bootstrap._gcd_import(name[level:], package, level)
       >            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
       >   File "<frozen importlib._bootstrap>", line 1204, in _gcd_import
       >   File "<frozen importlib._bootstrap>", line 1176, in _find_and_load
       >   File "<frozen importlib._bootstrap>", line 1147, in _find_and_load_unlocked
       >   File "<frozen importlib._bootstrap>", line 690, in _load_unlocked
       >   File "<frozen importlib._bootstrap_external>", line 940, in exec_module
       >   File "<frozen importlib._bootstrap>", line 241, in _call_with_frames_removed
       >   File "/build/propcache-0.2.0/packaging/pep517_backend/hooks.py", line 5, in <module>
       >     from setuptools.build_meta import *  # Re-exporting PEP 517 hooks  # pylint: disable=unused-wildcard-import,wildcard-import  # noqa: E501, F401, F403
       >     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
       > ModuleNotFoundError: No module named 'setuptools'
       > 
       > 
       For full logs, run 'nix log /nix/store/3kvfya2v3vnvbiglh2a5qyh2rai39w3f-python3.11-propcache-0.2.0.drv'.
error: 1 dependencies of derivation '/nix/store/szamcj6rz3fb1y7xrhdlzg02z3h1hk91-python3-3.11.9-env.drv' failed to build
error: 1 dependencies of derivation '/nix/store/z40aw3p5aa88fgq26cfbyl6h2d90jxnm-interactive-python3-3.11.9-environment-env.drv' failed to build

It's added as a nativeBuildInputs, as it's only used for building the environment.

P.S. I also ran (by mistake) nixfmt on the file. But if you want to stick with the old formatting, I'm happy to recommit keeping it as it was.

[PartyWumpus]

setuptools should be included by p2n as it's in the poetry lockfile iirc. I'm pretty sure it builds on my nixos system without anything python already installed.

[acovaci]

Hmm, yeah, you are right, that's weird... I wonder if it's because of the pyinstaller override, since that's the only dependency that requires it. Anyhow, I'll dig a bit more and see why it didn't pick it up on my end.

[PartyWumpus]

You're right, I'm getting this error on my system too, something probably broke at some point, I've not tried using the flake from scratch for a while. It works fine with my direnv cached copy, which is bizzare.

[acovaci]

Though, looks like poetry2nix isn't installing anything on my end. Can you check which commit SHA was working on your end?

[PartyWumpus]

Sorry, I meant to approve this earlier. I think the reason it worked for me is because I had python installed, direnv set everything up fine, and then it continued to work afterwards.

[Star-veil]

Just tested this on a fresh machine, it works :)