{ nixpkgs, flake-utils, ... }: let imports = [ ./languages/python.nix ]; in { mkShell = attrs: (flake-utils.lib.eachDefaultSystem ( system: let pkgs = import nixpkgs { inherit system; config.allowUnfree = true; }; modules = [ attrs ] ++ imports; evaluated = nixpkgs.lib.evalModules { inherit modules; }; in { devShells.default = pkgs.mkShell { TEST_ENV = builtins.trace evaluated.config "HELLO"; }; } )); }