{ description = "Python flake for use with pip environments."; inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable"; inputs.flake-utils.url = "github:numtide/flake-utils"; outputs = { self, nixpkgs, flake-utils}: flake-utils.lib.eachDefaultSystem (system: let pkgs = import nixpkgs { inherit system; config.allowUnfree = true; }; in { devShells.default = pkgs.mkShell { packages = with pkgs; [ python39 python39Packages.pip # You might want to add an IDE of your choice; # jetbrains.pycharm-professional ]; }; }); }