diff --git a/flake.nix b/flake.nix
index da1527d..641e7fc 100644
--- a/flake.nix
+++ b/flake.nix
@@ -7,12 +7,17 @@
 			sfnt2woff-zopfli = callPackage ./sfnt2woff-zopfli.nix {};
 			fetchfont = callPackage ./fetchfont.nix {sfnt2woff-zopfli = sfnt2woff-zopfli; };
 			fonts = callPackage ./fonts.nix {fetchfont = fetchfont; };
-		in
-		fetchfont = fetchfont;
-
-		defaultPackage.x86_64-linux =
-			with import nixpkgs { system = "x86_64-linux"; };
-			fonts // { sfnt2woff-zopfli = sfnt2woff-zopfli; };
-	};
+			allSystems = [ "x86_64-linux" "aarch64-linux" "x86_64-darwin" "aarch64-darwin" ];
+			forAllSystems = f: nixpkgs.lib.genAttrs allSystems (system: f {
+				pkgs = import nixpkgs { inherit system; };
+			});
+		in {
+			lib = {
+				fetchfont = fetchfont;
+			};
+			packages = forAllSystems {pkgs}: {
+				default = fonts // { sfnt2woff-zopfli = sfnt2woff-zopfli; };
+			};
+		};
 }