{ description = "Python Environment"; inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable"; inputs.flake-utils.url = "github:numtide/flake-utils"; inputs.devshell.url = "github:numtide/devshell"; outputs = { self, nixpkgs, flake-utils, devshell, }: flake-utils.lib.eachDefaultSystem (system: let pkgs = import nixpkgs { inherit system; config.allowUnfree = true; overlays = [devshell.overlays.default]; }; myPython = pkgs.python310.withPackages (p: with p; [ rich pygments ]); in { devShell = pkgs.devshell.mkShell { name = "Python Environment"; packages = with pkgs; [ myPython texlab ]; # Use $1 for positional args # commands = [ # ]; }; }); }