{ description = "A Nix-flake-based Python development environment"; inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-23.05"; outputs = { self, nixpkgs }: let supportedSystems = [ "x86_64-linux" "aarch64-linux" "x86_64-darwin" "aarch64-darwin" ]; forEachSupportedSystem = f: nixpkgs.lib.genAttrs supportedSystems (system: f { pkgs = import nixpkgs { inherit system; }; }); in { devShells = forEachSupportedSystem ({ pkgs }: { default = pkgs.mkShell { packages = with pkgs; [ python311 virtualenv borgbackup ] ++ (with pkgs.python311Packages; [ apprise pipx tox isort flexmock ]); shellHook = '' export PATH=~/.local/bin/:$PATH ''; }; }); }; }