diff --git a/pkgs/development/compilers/copper/default.nix b/pkgs/development/compilers/copper/default.nix
index dd6af73547a..736004fb580 100644
--- a/pkgs/development/compilers/copper/default.nix
+++ b/pkgs/development/compilers/copper/default.nix
@@ -28,5 +28,6 @@ stdenv.mkDerivation rec {
     homepage = "https://tibleiz.net/copper/";
     license = licenses.bsd2;
     platforms = platforms.x86_64;
+    broken = stdenv.isDarwin;
   };
 }