[arch-dev-public] /dev/shm permissions and building in chroot

Hi, I have been tracking down a python3 bug and it turns out to be caused by our chroot building. Essentially the permissions of /dev/shm are different in the chroot than on the system: allan@mugen /home/arch/chroot/stable-i686/copy/dev

ls -ld shm drwxr-xr-x 2 root root 40 Jul 12 15:16 shm

allan@mugen /dev

ls -ld shm drwxrwxrwt 2 root root 40 Aug 14 10:23 shm

So when configure scripts try to test for POSIX semaphores by writing in that directory, they fail. Looking at the relevant line in mkarchroot: mount -o bind /dev "${working_dir}/dev" Doing that manually show the same issue. Should we add chmod 1777 "${working_dir}/dev/shm" after the mount? It fixes my issue but feels hackish. Any other suggestions? Allan