Hey folks, I'm new to poetry2nix and trying to get my first flake going for a python backend in a monorepo.

The flake quickstart example has a default app output as follows:

apps.${system}.default = {
  type = "app";
  program = "${myapp}/bin/some_script";
};

But I would like to output multiple scripts as different commands. How would I go about it? I thought I could just do apps.${system}.command_name but it complains:

error: flake 'git+file:///home/ixxie/myapp?dir=backend' does not provide attribute 'packages.x86_64-linux.default' or 'defaultPackage.x86_64-linux

I'm not sure what to make of this... here is the flake for the backend (it's in ${monorepo}/backend):

{
  description = "MyApp Backend - Python, Uvicorn & FastAPI";

  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
    poetry2nix.url = "github:nix-community/poetry2nix";
  };
  
  outputs = { self, nixpkgs, poetry2nix }:
    let
      system = "x86_64-linux";
      pkgs = nixpkgs.legacyPackages.${system};
      # create a custom "mkPoetryApplication" API function that under the hood uses
      # the packages and versions (python3, poetry etc.) from our pinned nixpkgs above:
      inherit (poetry2nix.lib.mkPoetry2Nix { inherit pkgs; }) mkPoetryApplication;
      myapp = mkPoetryApplication { projectDir = ./.; };
    in
    {
      apps.${system}.backend = {
        type = "app";
        program = "${myapp}/bin/backend";
      };
    };
}

But I get the following error:

warning: Git tree '/home/ixxie/myapp' is dirty
error:
       … while calling a functor (an attribute set with a '__functor' attribute)
         at /nix/store/lpqygnph8c5l7ajkmqr4rff0pvkfz1f6-source/default.nix:407:13:
          406|
          407|       app = py.pkgs.buildPythonPackage (
             |             ^
          408|         passedAttrs // inputAttrs // {

       … while evaluating a branch condition
         at /nix/store/dydg48djlykksz8cxq0xjplyxpa9pvf4-source/pkgs/development/interpreters/python/python-packages-base.nix:28:7:
           27|     in
           28|       if builtins.isAttrs result then result
             |       ^
           29|       else if builtins.isFunction result then {

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

       error: expected a set but found null: null

In reply to @ixxie:matrix.org
How do I control the name of the package created with mkPoetryApplication and installed with nix profile install?

In reply to @tyberius_prime:matrix.org
I thought it was taken from pyproject.toml? the source indicate that this is true

I've set the name in pyproject.toml, and set pname in mkPoetryApplication but when I run nix profile install .#package-name but then I still get something like this:

> nix profile list

Name:               path/from/git/root/to/flake
Flake attribute:    packages.x86_64-linux.default
Original flake URL: git+file:///home/ixxie/project?dir=path/from/git/root/to/flake
Locked flake URL:   git+file:///home/ixxie/project?dir=path/from/git/root/to/flake
Store paths:        /nix/store/4r112qhr7f3vsxj3jx4ynvyb8560vjxf-python3.11-cli-0.1

In reply to @tyberius_prime:matrix.org
well, the name (pname + version) ends up in the store path, which I giuess is where the python3.11-cli comes from (cli being set in your pyproject.toml).

I suppose you want to change 'Name:'?

In reply to @tyberius_prime:matrix.org
I mean you can change the flake attribute easily enough, so 'flake attribute' is something you could change, at the price of having to do nix profile install /path/to/flake#name

hey, how can I override the generated inputs in mkPoetryApplication? I know I can override the dependencies but I can't manage to add inputs to the package itself

      mkPoetryApplication {
        projectDir = src;
        patches = [ ./salmon.patch ];
        overrides = defaultPoetryOverrides.extend (self: super: {
          bencoder-pyx = super.bencoder-pyx.overridePythonAttrs (old: {
            buildInputs = (old.buildInputs or []) ++ [ super.setuptools super.cython ];
          });
          pyimgurapi = super.pyimgurapi.overridePythonAttrs (old: {
            buildInputs = (old.buildInputs or []) ++ [ super.poetry ];
          });
          heybrochecklog = super.heybrochecklog.overridePythonAttrs (old: {
            patches = (old.patches or []) ++ [ ./salmon.patch ]; # ffs
            buildInputs = (old.buildInputs or []) ++ [ super.setuptools super.poetry ];
          });
          dottorrent = super.dottorrent.overridePythonAttrs (old: {
            buildInputs = (old.buildInputs or []) ++ [ super.setuptools ];
          });
          bs4 = super.bs4.overridePythonAttrs (old: {
            buildInputs = (old.buildInputs or []) ++ [ super.setuptools ];
          });
          pyimgur = super.pyimgur.overridePythonAttrs (old: {
            buildInputs = (old.buildInputs or []) ++ [ super.setuptools ];
          });
        });
      };

this is what I have so far, I tried overriding it together with the other dependencies but it had no effect

potentially silly question: how to get keyrings-google-artifactregistry-auth working in mkPoetryEnv? i include it as a buildInput and it works in the shellHook, but when i add a private source in tool.poetry.source' and try nix-shell`, i get these errors:

building '/nix/store/had00ag5f29zdjwlv5hmmc596cl60sjv-genjax-0.4.0-py3-none-any.whl.drv'...
Reading index https://us-west1-python.pkg.dev/probcomp-caliban/probcomp/simple/genjax/
Traceback (most recent call last):
  File "/nix/store/0rzh74dywg10ggl3ds6khsdpc84nbp96-fetch-from-legacy.py", line 82, in <module>
    response = urllib.request.urlopen(req, context=context)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/nix/store/7hnr99nxrd2aw6lghybqdmkckq60j6l9-python3-3.11.9/lib/python3.11/urllib/request.py", line 216, in urlopen
    return opener.open(url, data, timeout)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/nix/store/7hnr99nxrd2aw6lghybqdmkckq60j6l9-python3-3.11.9/lib/python3.11/urllib/request.py", line 525, in open
    response = meth(req, response)
               ^^^^^^^^^^^^^^^^^^^
  File "/nix/store/7hnr99nxrd2aw6lghybqdmkckq60j6l9-python3-3.11.9/lib/python3.11/urllib/request.py", line 634, in http_response
    response = self.parent.error(
               ^^^^^^^^^^^^^^^^^^
  File "/nix/store/7hnr99nxrd2aw6lghybqdmkckq60j6l9-python3-3.11.9/lib/python3.11/urllib/request.py", line 563, in error
    return self._call_chain(*args)
           ^^^^^^^^^^^^^^^^^^^^^^^
  File "/nix/store/7hnr99nxrd2aw6lghybqdmkckq60j6l9-python3-3.11.9/lib/python3.11/urllib/request.py", line 496, in _call_chain
    result = func(*args)
             ^^^^^^^^^^^
  File "/nix/store/7hnr99nxrd2aw6lghybqdmkckq60j6l9-python3-3.11.9/lib/python3.11/urllib/request.py", line 643, in http_error_default
    raise HTTPError(req.full_url, code, msg, hdrs, fp)
urllib.error.HTTPError: HTTP Error 401: Unauthorized

potentially silly question: how to get keyrings-google-artifactregistry-auth working in mkPoetryEnv? i include it as a buildInput and it works in the shellHook, but when i add a private source in tool.poetry.source and try nix-shell, i get these errors:

building '/nix/store/had00ag5f29zdjwlv5hmmc596cl60sjv-genjax-0.4.0-py3-none-any.whl.drv'...
Reading index https://us-west1-python.pkg.dev/probcomp-caliban/probcomp/simple/genjax/
Traceback (most recent call last):
  File "/nix/store/0rzh74dywg10ggl3ds6khsdpc84nbp96-fetch-from-legacy.py", line 82, in <module>
    response = urllib.request.urlopen(req, context=context)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/nix/store/7hnr99nxrd2aw6lghybqdmkckq60j6l9-python3-3.11.9/lib/python3.11/urllib/request.py", line 216, in urlopen
    return opener.open(url, data, timeout)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/nix/store/7hnr99nxrd2aw6lghybqdmkckq60j6l9-python3-3.11.9/lib/python3.11/urllib/request.py", line 525, in open
    response = meth(req, response)
               ^^^^^^^^^^^^^^^^^^^
  File "/nix/store/7hnr99nxrd2aw6lghybqdmkckq60j6l9-python3-3.11.9/lib/python3.11/urllib/request.py", line 634, in http_response
    response = self.parent.error(
               ^^^^^^^^^^^^^^^^^^
  File "/nix/store/7hnr99nxrd2aw6lghybqdmkckq60j6l9-python3-3.11.9/lib/python3.11/urllib/request.py", line 563, in error
    return self._call_chain(*args)
           ^^^^^^^^^^^^^^^^^^^^^^^
  File "/nix/store/7hnr99nxrd2aw6lghybqdmkckq60j6l9-python3-3.11.9/lib/python3.11/urllib/request.py", line 496, in _call_chain
    result = func(*args)
             ^^^^^^^^^^^
  File "/nix/store/7hnr99nxrd2aw6lghybqdmkckq60j6l9-python3-3.11.9/lib/python3.11/urllib/request.py", line 643, in http_error_default
    raise HTTPError(req.full_url, code, msg, hdrs, fp)
urllib.error.HTTPError: HTTP Error 401: Unauthorized