{ description = "A very basic flake"; outputs = { self, nixpkgs }: let pkgs = import nixpkgs { system = "x86_64-linux"; }; hello = pkgs.writeScriptBin "hello" '' #!${pkgs.bash}/bin/bash echo "Hello from bash script!" ''; in { packages.x86_64-linux.hello = hello; packages.x86_64-linux.default = self.packages.x86_64-linux.hello; }; }