New project with flake hangs, using seemingly infinite memory

[paholg]

Describe the issue

I created a new python project, and tried the flake template. Then, nix shell hangs and uses more and more memory until I kill it.

This is the only output produced:

evaluating derivation 'git+file:///home/paho/src/test#packages.x86_64-linux.default'

It is quite possible/likely that I am doing something wrong, and I would love pointers in the right direction. At this same time, this is not a great failure mode.

Additional context

To reproduce, run the following script on a system with flakes enabled:

#!/usr/bin/env bash

set -euxo pipefail

PROJECT_NAME="test"
mkdir "$PROJECT_NAME" && cd "$PROJECT_NAME" && git init
cat << PROJECT > pyproject.toml
[tool.poetry]
name = "test"
version = "0.0.1"
description = "foo"
authors = []

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

[build-system]
requires = ["poetry>=0.12"]
build-backend = "poetry.masonry.api"
PROJECT
git add pyproject.toml

nix-shell -p python310Packages.pipx --run \
  "pipx install --suffix=@master 'poetry@git+https://github.com/python-poetry/poetry.git@master' \
  && poetry@master lock"
git add poetry.lock

nix flake init -t github:nix-community/poetry2nix
git add flake.nix

# Hangs:
nix shell

flake.nix:

{
  description = "Application packaged using poetry2nix";

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

  outputs = { self, nixpkgs, flake-utils, poetry2nix }:
    flake-utils.lib.eachDefaultSystem (system:
      let
        # see https://github.com/nix-community/poetry2nix/tree/master#api for more functions and examples.
        inherit (poetry2nix.legacyPackages.${system}) mkPoetryApplication;
        pkgs = nixpkgs.legacyPackages.${system};
      in
      {
        packages = {
          myapp = mkPoetryApplication { projectDir = self; };
          default = self.packages.${system}.myapp;
        };

        devShells.default = pkgs.mkShell {
          packages = [ poetry2nix.packages.${system}.poetry ];
        };
      });
}

pyproject.toml:

[tool.poetry]
name = "test"
version = "0.0.1"
description = "foo"
authors = []

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

[build-system]
requires = ["poetry>=0.12"]
build-backend = "poetry.masonry.api"

poetry.lock:

# This file is automatically @generated by Poetry 1.7.0.dev0 and should not be changed by hand.
package = []

[metadata]
lock-version = "2.0"
python-versions = "^3.10"
content-hash = "53f2eabc9c26446fbcc00d348c47878e118afc2054778c3c803a0a8028af27d9"

[sciyoshi]

Please see the discussion here: #1291

[paholg]

Ah, thanks. Will close this as it seems to be the same issue.