The baselayout merge tries to write /mnt/floppy/.keep (I assume from the other similar /mnt/ commands listed before the failure). So if I have a read only /mnt/floppy drive mounted, it fails. This isn't fun when I expect to emerge a bunch of things overnight, only to find an early ebuild failed. WORKAROUND: umount /mnt/floppy, run ebuild, mount /mnt/floppy If the ebuild could skip ro mounts that would be good, but I don't know much about what it needs to do so that may not be feasible. At least not failing would be helpful.
*** This bug has been marked as a duplicate of 9849 ***