In reply to @adis:blad.is
Could you give me a complete reproduction case? I could try to figure out what's going on.

pyproject.toml

name = "minimal-recursion"
version = "0.1.0"
description = ""
authors = ["Andrey Larionov <anlarionov@gmail.com>"]

[tool.poetry.dependencies]
python = "^3.10"

[tool.poetry.dev-dependencies]
coverage = "^6.2"

[build-system]
requires = ["poetry-core>=1.0.0"]
build-backend = "poetry.core.masonry.api"

flake.nix

  description = "minimal-recursion";

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

  outputs = { self, nixpkgs, flake-utils, poetry2nix }:
    {
      # Nixpkgs overlay providing the application
      overlay = nixpkgs.lib.composeManyExtensions [
        poetry2nix.overlay
        (final: prev: {
          # The application
          minRec = prev.poetry2nix.mkPoetryApplication {
            projectDir = ./.;
          };
        })
      ];
    } // (flake-utils.lib.eachDefaultSystem (system:
      let
        pkgs = import nixpkgs {
          inherit system;
          overlays = [ self.overlay ];
        };
      in
      rec {
        apps = {
          exyaru = pkgs.minRec;
        };

        defaultApp = pkgs.minRec;

        packages = {
          exyaru = pkgs.minRec;
        };

        defaultPackage = pkgs.minRec;
      }));
}

In reply to @mou_bugtracker:matrix.org

pyproject.toml

name = "minimal-recursion"
version = "0.1.0"
description = ""
authors = ["Andrey Larionov <anlarionov@gmail.com>"]

[tool.poetry.dependencies]
python = "^3.10"

[tool.poetry.dev-dependencies]
coverage = "^6.2"

[build-system]
requires = ["poetry-core>=1.0.0"]
build-backend = "poetry.core.masonry.api"

flake.nix

  description = "minimal-recursion";

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

  outputs = { self, nixpkgs, flake-utils, poetry2nix }:
    {
      # Nixpkgs overlay providing the application
      overlay = nixpkgs.lib.composeManyExtensions [
        poetry2nix.overlay
        (final: prev: {
          # The application
          minRec = prev.poetry2nix.mkPoetryApplication {
            projectDir = ./.;
          };
        })
      ];
    } // (flake-utils.lib.eachDefaultSystem (system:
      let
        pkgs = import nixpkgs {
          inherit system;
          overlays = [ self.overlay ];
        };
      in
      rec {
        apps = {
          exyaru = pkgs.minRec;
        };

        defaultApp = pkgs.minRec;

        packages = {
          exyaru = pkgs.minRec;
        };

        defaultPackage = pkgs.minRec;
      }));
}

In reply to @adis:blad.is
https://github.com/nix-community/poetry2nix/pull/510

In reply to @mou_bugtracker:matrix.org
Wow. That was quick. Thank you so much.

In reply to @mou_bugtracker:matrix.org
Cool. Will wait till merge and then remove my explicit dependency on setuptools

Just updated poetry2nix and encountered error i'm pretty sure does not seen before
pyproject.toml

name = "poetry2nix-ref-rev"
version = "0.1.0"
description = ""
authors = ["Andrey Larionov <anlarionov@gmail.com>"]

[tool.poetry.dependencies]
python = "^3.9"
uengine = { git = "https://github.com/mou/uengine.git", rev = "9331977689e49a59cded336247f8cd54ae989b94" }

[build-system]
requires = ["poetry-core>=1.0.0"]
build-backend = "poetry.core.masonry.api"

flake.nix

  description = "poetry2nix minimal project to reproduce rev-ref bug";

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

  outputs = { self, nixpkgs, flake-utils, poetry2nix }:
    {
      # Nixpkgs overlay providing the application
      overlay = nixpkgs.lib.composeManyExtensions [
        poetry2nix.overlay
        (final: prev: {
          # The application
          refrev = prev.poetry2nix.mkPoetryApplication {
            projectDir = ./.;
          };
        })
      ];
    } // (flake-utils.lib.eachDefaultSystem (system:
      let
        pkgs = import nixpkgs {
          inherit system;
          overlays = [ self.overlay ];
        };
      in
      rec {
        apps = {
          refrev = pkgs.refrev;
        };

        defaultApp = pkgs.refrev;

        packages = {
          refrev = pkgs.refrev;
        };

        defaultPackage = pkgs.refrev;
      }));
}

nix build --show-trace

error: program 'git' failed with exit code 128

       … while fetching the input 'git+https://github.com/mou/uengine.git?ref=9331977689e49a59cded336247f8cd54ae989b94&rev=9331977689e49a59cded336247f8cd54ae989b94'

       … while evaluating the attribute 'src.name'

       at /nix/store/90rq6828hgygs5h3shm4zgn810h9xa8b-source/mk-poetry-dep.nix:169:7:

          168|       # Here we can then choose a file based on that info.
          169|       src =
             |       ^
          170|         if isGit then

       … while evaluating 'hasSuffix'

       at /nix/store/m41jr4nfb4vxf39nwqvc9sx68xi04gar-source/lib/strings.nix:234:5:

          233|     # Input string
          234|     content:
             |     ^
          235|     let

       … from call site

       at /nix/store/m41jr4nfb4vxf39nwqvc9sx68xi04gar-source/pkgs/development/interpreters/python/mk-python-derivation.nix:127:25:

          126|       pythonRemoveBinBytecodeHook
          127|     ] ++ lib.optionals (lib.hasSuffix "zip" (attrs.src.name or "")) [
             |                         ^
          128|       unzip

       … while evaluating 'optionals'

       at /nix/store/m41jr4nfb4vxf39nwqvc9sx68xi04gar-source/lib/lists.nix:270:5:

          269|     # List to return if condition is true
          270|     elems: if cond then elems else [];
             |     ^
          271|

       … from call site

       at /nix/store/m41jr4nfb4vxf39nwqvc9sx68xi04gar-source/pkgs/development/interpreters/python/mk-python-derivation.nix:127:10:

          126|       pythonRemoveBinBytecodeHook
          127|     ] ++ lib.optionals (lib.hasSuffix "zip" (attrs.src.name or "")) [
             |          ^
          128|       unzip

       … while evaluating 'chooseDevOutputs'

       at /nix/store/m41jr4nfb4vxf39nwqvc9sx68xi04gar-source/lib/attrsets.nix:498:22:

          497|   /* Pick the outputs of packages to place in buildInputs */
          498|   chooseDevOutputs = drvs: builtins.map getDev drvs;
             |                      ^
          499|

       … from call site

       … while evaluating the attribute 'nativeBuildInputs' of the derivation 'python3.9-uengine-3.6.14'

       at /nix/store/m41jr4nfb4vxf39nwqvc9sx68xi04gar-source/pkgs/stdenv/generic/make-derivation.nix:205:7:

          204|     // (lib.optionalAttrs (attrs ? name || (attrs ? pname && attrs ? version)) {
          205|       name =
             |       ^
          206|         let

       … while evaluating the attribute 'out.outPath'

       at /nix/store/m41jr4nfb4vxf39nwqvc9sx68xi04gar-source/lib/customisation.nix:157:13:

          156|             drvPath = assert condition; drv.${outputName}.drvPath;
          157|             outPath = assert condition; drv.${outputName}.outPath;
             |             ^
          158|           };

       … while evaluating the attribute 'propagatedBuildInputs' of the derivation 'python3.9-poetry2nix-ref-rev-0.1.0'

       at /nix/store/m41jr4nfb4vxf39nwqvc9sx68xi04gar-source/pkgs/stdenv/generic/make-derivation.nix:205:7:

          204|     // (lib.optionalAttrs (attrs ? name || (attrs ? pname && attrs ? version)) {
          205|       name =
             |       ^
          206|         let

       … while evaluating the attribute 'drvPath'

       at /nix/store/m41jr4nfb4vxf39nwqvc9sx68xi04gar-source/lib/customisation.nix:163:7:

          162|     in commonAttrs // {
          163|       drvPath = assert condition; drv.drvPath;
             |       ^
          164|       outPath = assert condition; drv.outPath;

I'm not sure but looks like revision is also placed in position of reference when fetching from git. Pretty sure at least couple of week ago i did not saw this error for similar dependencies.

hmm. i'm looking into mk-poetry-dep.nix

  171           (
  172             builtins.fetchGit {
  173               inherit (source) url;
  174               rev = source.resolved_reference or source.reference;
  175               ref = sourceSpec.branch or sourceSpec.rev or (if sourceSpec?tag then "refs/tags/${sourceSpec.tag}" else "HEAD");
  176             }
  177           )

looks like if source has no branch specification, then ref will get binding to sourceSpec.rev. Which is cause constructing url git+https://github.com/mou/uengine.git?ref=9331977689e49a59cded336247f8cd54ae989b94&rev=9331977689e49a59cded336247f8cd54ae989b94

I'm total newbie and migth not understand completly what this code does.

nix flake init --template github:nix-community/poetry2nix

when I try any of the new nix commands (nix shell, nix develop, nix build) after that, I get

error: flake 'path:/home/das-g/tmp/imgapp' does not provide attribute 'devShells.x86_64-linux.devShell.x86_64-linux', 'packages.x86_64-linux.devShell.x86_64-linux', 'legacyPackages.x86_64-linux.devShell.x86_64-linux', 'devShell.x86_64-linux' or 'defaultPackage.x86_64-linux'