rset: mark as broken

Failing Hydra build: https://hydra.nixos.org/build/230560459

Pretty outdated already and now having trouble with latest glibc. Since
the patches don't apply anymore and the currently used tag is almost 2.5
years old, it's IMHO reasonable to consider it broken until somebody
steps up to take care of this package.

pkgs/tools/admin/rset/default.nix

@@ -44,5 +44,10 @@ stdenv.mkDerivation rec {
     license = licenses.isc;
     platforms = platforms.unix;
     maintainers = with maintainers; [ cstrahan ];
+    # 2023-08-19, fails to compile with glibc-2.38 because of strlcpy.
+    # At the time of writing, this was 4 minors behind already and
+    # the `paths.patch` didn't apply anymore, so this is now considered
+    # broken until somebody cares enough to fix and upgrade this.
+    broken = true;
   };
 }