nix: Import quartz

This will allow us to modularize the flake in the future. For now just
import the eachSystem lib utility, but soon we can also omit the
fetchFromGithub for quartz.

Author: vimpostor

flake.lock

@@ -2,11 +2,10 @@
 	description = "Drag and drop your files directly out of the terminal";
 	inputs = {
 		nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+		quartz.url = "github:vimpostor/quartz";
 	};
 
-	outputs = { self, nixpkgs }:
-	let eachSystem = with nixpkgs.lib; f: foldAttrs mergeAttrs {} (map (s: mapAttrs (_: v: { ${s} = v; }) (f s)) systems.flakeExposed);
-	in eachSystem (system:
+	outputs = { self, nixpkgs, quartz }: quartz.lib.eachSystem (system:
 		let
 			pkgs = nixpkgs.legacyPackages.${system};
 			stdenvs = [ { name = "gcc"; pkg = pkgs.gcc14Stdenv; } { name = "clang"; pkg = pkgs.llvmPackages_18.stdenv; } ];