In reply to @x10an14:matrix.org

Here's my flake.nix, stripped of non-Nix/poetry2nix related sturr:

{
  description = "A Nix-flake for poetry based python development ";

  inputs = {
    flake-utils.url = "github:numtide/flake-utils";
    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
    poetry2nix = {
      url = "github:nix-community/poetry2nix";
      inputs.nixpkgs.follows = "nixpkgs";
      inputs.flake-utils.follows = "nixpkgs";
    };
  };

  outputs = {
    self,
    ...
  } @ inputs:
    inputs.flake-utils.lib.eachDefaultSystem (system: let
      pkgs = import inputs.nixpkgs {localSystem = {inherit system;};};
      inherit (inputs.poetry2nix.lib.mkPoetry2Nix { inherit pkgs; }) mkPoetryApplication;
      myapp = mkPoetryApplication {projectDir = self;};
    in {
      devShells.default = pkgs.mkShell {
        inputsFrom = [myapp];
        packages = with pkgs; [
          poetry
          (
            python3.withPackages (
              exts: [
                exts.ipython
              ]
            )
          )
        ];

        shellHook = ''
          ${pkgs.python3}/bin/python3 --version
          ${pkgs.poetry}/bin/poetry --version
        '';
      };
      packages = {
        inherit myapp;
      };
      packages.default = myapp;
    });
}

In reply to @truh:matrix.org
You could try nixpkgs.follows = "poetry2nix/nixpkgs"; rather than the other way around.

Thanks for taking a look @truh! Huhm...
I agree that there's a channel mismatch between the two...

But how do you figure it's related to the error message? I don't see anywhere there might be a reference to a flake-utils version missing https://github.com/numtide/flake-utils?tab=readme-ov-file#eachdefaultsystem--system---attrs.

  `inputs.flake-utils.follows = "nixpkgs";` this shouldn't follow nixpkgs

In reply to @truh:matrix.org
You could try nixpkgs.follows = "poetry2nix/nixpkgs"; rather than the other way around.

  `inputs.flake-utils.follows = "nixpkgs";` 

this shouldn't follow nixpkgs

  inputs.flake-utils.follows = "nixpkgs";

this shouldn't follow nixpkgs

In reply to @truh:matrix.org

  `inputs.flake-utils.follows = "nixpkgs";` this shouldn't follow nixpkgs

I'm trying to build an older version of poetry, specifically version 1.4.2. I have this derivation:

{ fetchFromGitHub, poetry2nix }:
poetry2nix.mkPoetryApplication {
    projectDir = fetchFromGitHub {
        owner = "python-poetry";
        repo = "poetry";
        rev = "1.4.2";
        hash = "sha256-AiRQFZA5+M1niTzj1RO2lx0QFOMmSzpQo1gzauyTblg=";
    };
}

The derivation builds fine. However, the resulting package depends on the build module version 1.0.3. This is a problem, since the poetry.lock from that version of poetry requires build version 0.10. As a result, the poetry package doesn't work since that version of poetry breaks with that version of the build package.

I have attempted to override the build package version:

{ fetchFromGitHub, poetry2nix }:
poetry2nix.mkPoetryApplication {
    projectDir = fetchFromGitHub {
        owner = "python-poetry";
        repo = "poetry";
        rev = "1.4.2";
        hash = "sha256-AiRQFZA5+M1niTzj1RO2lx0QFOMmSzpQo1gzauyTblg=";
    };
    overrides = poetry2nix.defaultPoetryOverrides.extend (final: prev: {
        build = prev.build.overridePythonAttrs (old: {
            version = "0.10.0";
            src = fetchFromGitHub {
                owner = "pypa";
                repo = "build";
                rev = "0.10.0";
                hash = "sha256-kXFrfTb7+68EV+gSENL81IFSR+ue7Fl6R2gsuFFBJhI=";
            };
        });
    });
}

But, when I do that, I get a build error:

       > patching script interpreter paths in /nix/store/i2mwa5yrz6lgllq3rvqim6ldwgj2bcfv-python3.11-zipp-3.14.0
       > stripping (with command strip and flags -S) in  /nix/store/i2mwa5yrz6lgllq3rvqim6ldwgj2bcfv-python3.11-zipp-3.14.0/lib
       > Executing pythonRemoveTestsDir
       > Finished executing pythonRemoveTestsDir
       > Running phase: pythonCatchConflictsPhase
       > Found duplicated packages in closure for dependency 'wheel':
       >       wheel 0.41.1 (/nix/store/k0hkn48yfv05f6a1nf4qfri3ajilxgzb-python3.11-wheel-0.41.1/lib/python3.11/site-packages/wheel-0.41.1.dist-info)
       >         wheel 0.41.1 (/nix/store/lq0ayfkzrgp69r5g7ia7ln597qa5dv18-python3.11-wheel-0.41.1/lib/python3.11/site-packages/wheel-0.41.1.dist-info)
       >
       > Package duplicates found in closure, see above. Usually this happens if two packages depend on different version of the same dependency.

I've tried searching the edgecases documentation but didn't find anything that seems to explain what I should do in this case.

Anyway, I was about to open an issue, but saw that it asked that I first post problems to the Matrix chat and I was wondering if anyone had any idea what I was doing wrong or if I should open up an issue.

Thanks in advance!

  description = "Application packaged using poetry2nix";

  inputs = {
    flake-utils.url = "github:numtide/flake-utils";
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable-small";
    poetry2nix = {
      url = "github:nix-community/poetry2nix";
      inputs.nixpkgs.follows = "nixpkgs";
    };
  };


  outputs = { self, nixpkgs, flake-utils, poetry2nix }:
    flake-utils.lib.eachDefaultSystem (system:
      let
        pkgs = nixpkgs.legacyPackages.${system};

        inherit (poetry2nix.lib.mkPoetry2Nix { inherit pkgs; }) mkPoetryApplication overrides;

				mk = mkPoetryApplication {
				  projectDir = ./.;
				  overrides = overrides.withDefaults (self: super: {
				
				    pathspec = super.pathspec.overridePythonAttrs (
				      old: {
				        buildInputs = (old.buildInputs or [ ]) ++ [ self.flit-core ];
				      }
				    );
				  });
				};

      in
      {

        packages = {
          myapp = mk;
          default = self.packages.${system}.myapp;
        };

        # Shell for app dependencies: 
        # Use this shell for developing your app: 	nix develop
        devShells.default = pkgs.mkShell {
          inputsFrom = [ self.packages.${system}.myapp ];
        };

        # Shell for poetry.
        # Use this shell for changes to pyproject.toml and poetry.lock: nix develop .#poetry
        devShells.poetry = pkgs.mkShell {
          packages = [ pkgs.poetry ];
        };
      });
}

with the following error: ``` warning: Git tree '/home/kativen/universita/statistical_learning' is dirty
error: builder for '/nix/store/65p128giakz2k87slj0mphllvk9fcn2r-python3.11-docutils-0.21.2.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 'flit_core'
>
>
For full logs, run 'nix log /nix/store/65p128giakz2k87slj0mphllvk9fcn2r-python3.11-docutils-0.21.2.drv'.
error: 1 dependencies of derivation '/nix/store/qhqqkxwv2hn4iyqh6i7bp8yrnz2gazih-python3.11-flit-3.9.0.drv' failed to build
error (ignored): error: cannot unlink '/tmp/nix-build-python3.11-pyyaml-6.0.1.drv-0': Directory not empty
error: 1 dependencies of derivation '/nix/store/sbhbrhkfx74cwklf0vccjffm659v3wd8-nix-shell-env.drv' failed to build

with the following error: ``` warning: Git tree '/home/kativen/universita/statistical_learning' is dirty
error: builder for '/nix/store/65p128giakz2k87slj0mphllvk9fcn2r-python3.11-docutils-0.21.2.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 'flit_core'

For full logs, run 'nix log /nix/store/65p128giakz2k87slj0mphllvk9fcn2r-python3.11-docutils-0.21.2.drv'.
error: 1 dependencies of derivation '/nix/store/qhqqkxwv2hn4iyqh6i7bp8yrnz2gazih-python3.11-flit-3.9.0.drv' failed to build
error (ignored): error: cannot unlink '/tmp/nix-build-python3.11-pyyaml-6.0.1.drv-0': Directory not empty
error: 1 dependencies of derivation '/nix/store/sbhbrhkfx74cwklf0vccjffm659v3wd8-nix-shell-env.drv' failed to build ```

with the following error: warning: Git tree '/home/kativen/universita/statistical_learning' is dirty
error: builder for '/nix/store/65p128giakz2k87slj0mphllvk9fcn2r-python3.11-docutils-0.21.2.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 'flit_core'

For full logs, run 'nix log /nix/store/65p128giakz2k87slj0mphllvk9fcn2r-python3.11-docutils-0.21.2.drv'.
error: 1 dependencies of derivation '/nix/store/qhqqkxwv2hn4iyqh6i7bp8yrnz2gazih-python3.11-flit-3.9.0.drv' failed to build
error (ignored): error: cannot unlink '/tmp/nix-build-python3.11-pyyaml-6.0.1.drv-0': Directory not empty
error: 1 dependencies of derivation '/nix/store/sbhbrhkfx74cwklf0vccjffm659v3wd8-nix-shell-env.drv' failed to build ```

error: builder for '/nix/store/65p128giakz2k87slj0mphllvk9fcn2r-python3.11-docutils-0.21.2.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  flit\_core

For full logs, run 'nix log /nix/store/65p128giakz2k87slj0mphllvk9fcn2r-python3.11-docutils-0.21.2.drv'.
error: 1 dependencies of derivation '/nix/store/qhqqkxwv2hn4iyqh6i7bp8yrnz2gazih-python3.11-flit-3.9.0.drv' failed to build
error (ignored): error: cannot unlink '/tmp/nix-build-python3.11-pyyaml-6.0.1.drv-0': Directory not empty
error: 1 dependencies of derivation '/nix/store/sbhbrhkfx74cwklf0vccjffm659v3wd8-nix-shell-env.drv' failed to build  ```

In reply to @kativen:matrix.org

error: builder for '/nix/store/65p128giakz2k87slj0mphllvk9fcn2r-python3.11-docutils-0.21.2.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  flit\_core

For full logs, run 'nix log /nix/store/65p128giakz2k87slj0mphllvk9fcn2r-python3.11-docutils-0.21.2.drv'.
error: 1 dependencies of derivation '/nix/store/qhqqkxwv2hn4iyqh6i7bp8yrnz2gazih-python3.11-flit-3.9.0.drv' failed to build
error (ignored): error: cannot unlink '/tmp/nix-build-python3.11-pyyaml-6.0.1.drv-0': Directory not empty
error: 1 dependencies of derivation '/nix/store/sbhbrhkfx74cwklf0vccjffm659v3wd8-nix-shell-env.drv' failed to build  ```

Hey y'all!

I'm working on nixifying a Python application, and chose to use poetry2nix due to previous familiarity.
Originally the project used hatch (not really relevant).

However, the end-result is a docker image (no surprises there).
And the docker image previously produces has much smaller size than the one generated by Nix.
(I'm leveraging nixpkgs's dockerTools.buildImage on the mkPoetryApplication).

Hey y'all!

I'm working on nixifying a Python application, and chose to use poetry2nix due to previous familiarity.
Originally the project used hatch (not really relevant).

However, the end-result is a docker image (no surprises there).
And the docker image previously produces has much smaller size than the one generated by Nix.
(I'm leveraging nixpkgs's dockerTools.buildImage on the mkPoetryApplication).

We're talking like 125MiB vs 527MiB.