Hi folks.

I tried to bump python to 3.12 for a project that uses poetry2nix
python-ldap seems to fail to build now with

  /nix/store/89arss4li8g0g0nabm8a1q6dalzamvph-python3-3.12.4/bin/python3.12 /build/tmpid30f39w.py
  Traceback (most recent call last):
    File "/build/tmpid30f39w.py", line 1, in <module>
      from distutils.util import byte_compile
  ModuleNotFoundError: No module named 'distutils'
  error: command '/nix/store/89arss4li8g0g0nabm8a1q6dalzamvph-python3-3.12.4/bin/python3.12' failed with exit code 1
  error: subprocess-exited-with-error

  × Building wheel for python-ldap (pyproject.toml) did not run successfully.
  │ exit code: 1
  ╰─> See above for output

Disutils was removed from the standard library but this should still work because setuptools provides a replacement?
Any idea what could be going wrong?

I did try something like that:

       python-ldap = prev.python-ldap.overridePythonAttrs (
         old: {
           buildInputs = old.buildInputs or [ ] ++ [
             pkgs.openldap
             pkgs.cyrus_sasl
             # Fix for "cannot find -lldap_r: No such file or directory"
             (pkgs.writeTextFile {
               name = "openldap-lib-fix";
               destination = "/lib/libldap_r.so";
               text = "INPUT ( libldap.so )\n";
             })
           ];
+          propagatedBuildInputs = old.propagatedBuildInputs or [ ] ++ [ final.setuptools ];
         }
       );

I found that done in other parts of the code, but that didn't seem to help

I usually put it in buildInputs not propagatedBuildInputs

             pkgs.openldap
             pkgs.cyrus_sasl
             # Fix for "cannot find -lldap_r: No such file or directory"
             (pkgs.writeTextFile {
               name = "openldap-lib-fix";
               destination = "/lib/libldap_r.so";
               text = "INPUT ( libldap.so )\n";
             })

Should no longer be necessary if you poetry2nix is up to date

I'm running into a problem that I cannot figure out, if someone has a clue, I would very much appreciate some feedback.

I am getting an error when I use nix to run or build my python poetry project if the entry point module is not named main.

Here is the error:

~/mypackage$ nix run
Traceback (most recent call last):
  File "/nix/store/g0fsa09mpa90apcy2i02vljgd5rxxj42-python3.12-mypackage-0.5.0/bin/.mypackage-wrapped", line 6, in <module>
    from mypackage.cli import app
ModuleNotFoundError: No module named 'mypackage.cli'

Here is the structure of my project:

mypackage/
├── README.md
├── mypackage
│   ├── __init__.py
│   ├── cli.py
│   └── mymodule.py
├── flake.lock
├── flake.nix
├── poetry.lock
├── pyproject.toml

Here is the [tool.poetry.scripts] section of my pyproject.toml

[tool.poetry.scripts]
mypackage = "mypackage.cli:app"

Here is my flake.nix

{
  description = "mypackage";
  # Flake inputs
  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
    poetry2nix.url = "github:nix-community/poetry2nix";
  };

  # Flake outputs
  outputs = { self, nixpkgs, poetry2nix }:
    let

      # Systems supported
      allSystems = [
        "x86_64-linux" # 64-bit Intel/AMD Linux
        "aarch64-linux" # 64-bit ARM Linux
        "x86_64-darwin" # 64-bit Intel macOS
        "aarch64-darwin" # 64-bit ARM macOS
      ];

      # Helper to provide system-specific attributes
      forAllSystems = f: nixpkgs.lib.genAttrs allSystems (system: f {
        pkgs = import nixpkgs { inherit system; config.allowUnfree = true; };
      });

    in
    {

      packages = forAllSystems
        ({ pkgs }:
          let
            inherit (poetry2nix.lib.mkPoetry2Nix { inherit pkgs; }) mkPoetryApplication;
          in
          rec {
            myapp = mkPoetryApplication { projectDir = self; };
            default = myapp;
            apps.default = "${myapp}/bin/mypackage";
          });

      devShells = forAllSystems
        ({ pkgs }:
          let
            inherit (poetry2nix.lib.mkPoetry2Nix { inherit pkgs; }) mkPoetryApplication;
          in
          {
            default = pkgs.mkShell
              {
                packages = with pkgs; [
                  poetry
                  (mkPoetryApplication { projectDir = self; })
                ];
              };
          });

    };

}

If I simply rename the cli.py module to main.py, and change the pyproject.toml to reflect the new name, everything works, and there is no error when running the executable produced by nix build, or running with nix run.

The structure of my project tree when it works is simply

mypackage/
├── README.md
├── mypackage
│   ├── __init__.py
│   ├── main.py <------------ This is the change.
│   └── mymodule.py
├── flake.lock
├── flake.nix
├── poetry.lock
├── pyproject.toml

Here is the [tool.poetry.scripts] section of my pyproject.toml with the associated change

[tool.poetry.scripts]
mypackage = "mypackage.main:app"

Does anyone know why I am getting the error when I try to name the module something other than main.py, how can I get everything working when I name the module cli.py?