coreutils: disable df-symlink test

pkgs/tools/misc/coreutils/default.nix

@@ -43,6 +43,9 @@ stdenv.mkDerivation (rec {
     sed '2i echo Skipping rm deep-2 test && exit 77' -i ./tests/rm/deep-2.sh
     sed '2i echo Skipping du long-from-unreadable test && exit 77' -i ./tests/du/long-from-unreadable.sh
 
+    # Depends on the mountpoints
+    sed '2i echo Skipping df df-symlink test && exit 77' -i ./tests/df/df-symlink.sh
+
     # Some target platforms, especially when building inside a container have
     # issues with the inotify test.
     sed '2i echo Skipping tail inotify dir recreate test && exit 77' -i ./tests/tail-2/inotify-dir-recreate.sh