{ description = "A very basic flake"; inputs = { flake-utils.url = "github:numtide/flake-utils"; }; outputs = { self, pkgs, flake-utils }: flake-utils.lib.eachDefaultSystem (system: let p = pkgs.packages.x86_64-linux; in { defaultPackage = p.rustPlatform.buildRustPackage { pname = "gtk-hello-world"; version = "0.1.0"; src = self; cargoLock.lockFile = ./Cargo.lock; nativeBuildInputs = with p; [ pkgconfig ]; buildInputs = with p; [ gtk4 ]; }; devShell = p.mkShell { inputsFrom = [ self.defaultPackage.x86_64-linux ]; }; } ); }