{ description = "A basic flake with a shell"; inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable"; inputs.flake-utils.url = "github:numtide/flake-utils"; outputs = { nixpkgs, flake-utils, ... }: flake-utils.lib.eachDefaultSystem (system: let pkgs = nixpkgs.legacyPackages.${system}; in { devShells.default = pkgs.mkShell { packages = with pkgs; [ (python3.withPackages (pypkgs: with pypkgs; [ mkdocs-material ])) ]; }; }); }