I noticed that files such as ".gk8hqaqb6z4q1gmk678sixjbc9r7kd9g-disk-image-rw" are filling up my $TMPDIR when building ISO images with Guix.
This is new. I think the issue was introduced with recent work on (gnu system image), perhaps from this commit: https://git.savannah.gnu.org/cgit/guix.git/commit/?id=da924796744bbb7b035a986fe5d28d8d613ff6af
