{ description = "A Nix-flake-based Python development environment"; inputs = { dev.url = "github:the-nix-way/dev-templates"; mach-nix.url = "github:/DavHau/mach-nix"; }; outputs = { self, dev, mach-nix }: let inherit (dev.lib) flake-utils nixpkgs; in flake-utils.lib.eachDefaultSystem (system: let pkgs = import nixpkgs { inherit system; }; inherit (pkgs) mkShell; python = pkgs.python311; machNix = mach-nix.defaultPackage.${system}; pythonTools = with pkgs; [ virtualenv ] ++ (with pkgs.python311Packages; [ pip ]); nixTools = [ machNix ]; in { devShells = { default = mkShell { buildInputs = [ python ] ++ pythonTools ++ nixTools; shellHook = '' ${python}/bin/python --version ''; }; }; }); }