Hello! So I was trying to mount /run/user/1000 in a container so it would have access to all my wayland sockets and such when I got a very cryptic error message.
I was trying something like this: guix shell --share=/run/user/1000 -C coreutils After far too long tracking down the issue, it turns out that the directory had submounts within it meaning that the MS_REC flag is required to bind mount it. My /run/user/1000 only had a submount because xdg-document-portal was making one. To test this yourself you can run `mount` to find something with some submounts. I think /sys/fs might fail for me for the same reason. Now I have no clue what we should do to enable this use case. Maybe we should allow users to specify mount options using something like this? guix shell -C --mount=rbind,ro=/run/user/1000 Maybe we could always bind with the recursive flag? Thanks, Morgan
