uxn: fix builds in Darwin

pkgs/by-name/ux/uxn/package.nix

@@ -35,7 +35,10 @@ stdenv.mkDerivation (finalAttrs: {
   postPatch = ''
     patchShebangs build.sh
     substituteInPlace build.sh \
-      --replace "-L/usr/local/lib " ""
+      --replace "-L/usr/local/lib " "" \
+      --replace "$(brew --prefix)/lib/libSDL2.a " "" \
+      --replace "--static-libs" "--libs" \
+      --replace " | sed -e 's/-lSDL2 //'" ""
   '';
 
   buildPhase = ''
@@ -68,6 +71,5 @@ stdenv.mkDerivation (finalAttrs: {
     maintainers = with lib.maintainers; [ ];
     mainProgram = "uxnemu";
     inherit (SDL2.meta) platforms;
-    broken = stdenv.hostPlatform.isDarwin;
   };
 })