{ description = "A very basic flake"; inputs = { nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-unstable"; flake-parts.url = "github:hercules-ci/flake-parts"; }; outputs = inputs@{ flake-parts, ... }: flake-parts.lib.mkFlake { inherit inputs; } (_: { imports = []; systems = [ "x86_64-linux" ]; perSystem = { pkgs, ... }: { devShells.default = pkgs.mkShell { buildInputs = with pkgs; [ python313 python313Packages.mypy python313Packages.black python313Packages.python-lsp-server python313Packages.pylsp-mypy ]; }; }; }) ; }