noto-fonts-emoji: Work around Hydra silence timeouts by being noisy

The added noise should keep Hydra from stopping this build thinking it
is hanging doing nothing, while in fact it's just churning slowly
through thousands of funny pictures!

pkgs/data/fonts/noto-fonts/default.nix

@@ -141,6 +141,10 @@ in
       # remove check for virtualenv, since we handle
       # python requirements using python.withPackages
       sed -i '/ifndef VIRTUAL_ENV/,+2d' Makefile
+
+      # Make the build verbose so it won't get culled by Hydra thinking that
+      # it somehow got stuck doing nothing.
+      sed -i 's;\t@;\t;' Makefile
     '';
 
     enableParallelBuilding = true;