{
  description = "Python UV dev environment";
  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
    pyproject-nix = {
      url = "github:pyproject-nix/pyproject.nix";
      inputs.nixpkgs.follows = "nixpkgs";
    };
    uv2nix = {
      url = "github:pyproject-nix/uv2nix";
      inputs.pyproject-nix.follows = "pyproject-nix";
      inputs.nixpkgs.follows = "nixpkgs";
    };
    pyproject-build-systems = {
      url = "github:pyproject-nix/build-system-pkgs";
      inputs.pyproject-nix.follows = "pyproject-nix";
      inputs.uv2nix.follows = "uv2nix";
      inputs.nixpkgs.follows = "nixpkgs";
    };
  };

  outputs = {
    self,
    nixpkgs,
    uv2nix,
    pyproject-nix,
    pyproject-build-systems,
    ...
  }:
  let
    inherit (nixpkgs) lib;

    workspace = uv2nix.lib.workspace.loadWorkspace {workspaceRoot = ./.;};
    overlay = workspace.mkPyProjectOverlay{
      sorcePreference = "wheel";
    };
    pyprojectOverrides = _final: _prev: {};

    pkgs = nixpkgs.legacyPackages.x86_64-linux;

    python = pkgs.python314;

    pythonSet = 
      (pkgs.callPackage pyproject-nix.build.packages{
        inherit python;
      }).overrideScope
        (
        lib.composeManyExtensions [
          pyproject-build-systems.overlays.default
          overlay
          pyprojectOverrides
        ]
      );

  in
  {
    packages.x86_64-linux.default = pythonSet.mkVirtualEnv "autumnism" workspace.deps.default;
    apps.x86_64-linux = {
      default = {
        type ="app";
        program = "${self.packages.x86_64-linux.default}/bin/hello";
      };
    };

    devShells.x86_64-linux = {
      uv2nix =
        let
          editableOverlay = workspace.mkEditablePyprojectOverlay {
            root = "$REPO_ROOT";
          };
          editablePythonSet = pythonSet.overrideScope (
            lib.composeManyExtensions [
              editableOverlay
              (final: prev: {
                autumnism = prev.autumnism.overrideAttrs (old: {
                  src = lib.fileset.toSource {
                    root = old.src;
                    fileset = lib.fileset.unions [
                      (old.src + "pyproject.toml")
                      (old.src + "/README.md")
                      (old.src + "/src/autumnism")
                    ];
                  };
                  nativeBuildInputs =
                    old.nativeBuildInputs
                    ++ final.resolveBuildSystem {
                      editables = [ ];
                    };
                });
              })
            ]
          );
          virtualenv = editablePythonSet.mkVirtualEnv "autumnism-dev-env" workspace.deps.all;
        in
        pkgs.mkShell {
          packages = [
            virtualenv
            pkgs.uv
          ];

          env = {
            UV_NO_SYNC = "1";
            UV_PYTHON = python.interpreter;
            UV_PYTHON_DOWNLOADS = "never";
          };

          shellHook = ''
            unset PYTHONPATH
            export REPO_ROOT=$(git rev-parse --show-toplevel)
          '';

        };
      };
  };
}