{
  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
    systems.url = "github:nix-systems/default";

    pyproject-nix = {
      url = "github:pyproject-nix/pyproject.nix";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    uv2nix = {
      url = "github:pyproject-nix/uv2nix";
      inputs.nixpkgs.follows = "nixpkgs";
      inputs.pyproject-nix.follows = "pyproject-nix";
    };

    pyproject-build-systems = {
      url = "github:pyproject-nix/build-system-pkgs";
      inputs.nixpkgs.follows = "nixpkgs";
      inputs.pyproject-nix.follows = "pyproject-nix";
      inputs.uv2nix.follows = "uv2nix";
    };
  };

  outputs = {
    self,
    nixpkgs,
    systems,
    pyproject-nix,
    uv2nix,
    pyproject-build-systems,
    ...
  }: let
    inherit (nixpkgs) lib;
    eachSystem = lib.genAttrs (import systems);
    workspace = uv2nix.lib.workspace.loadWorkspace { workspaceRoot = ./.; };
  in {
    devShells = eachSystem (system: let
      pkgs = nixpkgs.legacyPackages.${system};
      python = pkgs.python3;
      overlay = workspace.mkPyprojectOverlay {
        sourcePreference = "wheel";
      };
      editableOverlay = workspace.mkEditablePyprojectOverlay {
        root = "$REPO_ROOT";
      };
      editableSet = (pkgs.callPackage pyproject-nix.build.packages {
        inherit python;
      }).overrideScope (lib.composeManyExtensions [
        pyproject-build-systems.overlays.default
        overlay
        editableOverlay
      ]);
      venv = editableSet.mkVirtualEnv "rangifer-dev" workspace.deps.all;
    in {
      default = pkgs.mkShell {
        packages = [ venv pkgs.uv pkgs.pyright ];
        
        env = {
          UV_NO_SYNC = "1";
          UV_PYTHON = "${venv}/bin/python";
          UV_PYTHON_DOWNLOADS = "never";
        };
        shellHook = ''
          unset PYTHONPATH
          export REPO_ROOT=$(git rev-parse --show-toplevel)
        '';
      };
    });
  };
}