{ inputs = { nixpkgs.url = "nixpkgs/nixos-unstable"; }; outputs = {nixpkgs, ...}: let system = "x86_64-linux"; pkgs = import nixpkgs { inherit system; }; in { packages.${system} = { default = pkgs.callPackage ./package.nix {}; }; devShells.${system} = { default = pkgs.mkShell { nativeBuildInputs = [ pkgs.zola pkgs.tokei ]; shellHook = '' ${pkgs.cowsay}/bin/cowsay Welcome to the devshell ''; }; }; }; }