{ description = "A very basic flake"; inputs = { nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-unstable"; }; outputs = { self, nixpkgs}: let supportedSystems = [ "x86_64-linux" ]; forAllSystems = nixpkgs.lib.genAttrs supportedSystems; in { packages = forAllSystems (system: let pkgs = nixpkgs.legacyPackages.${system}; in { xbuild = pkgs.callPackage ./pkgs/x/xbuild/package.nix {}; }); }; }