Ubuntu
snapd package

  1. Bug #1575053
  2. Comment #29

Comment 29 for bug 1575053

Revision history for this message
Jamie Strandboge (jdstrand) wrote : Re: Please move snap user data from "$HOME/snap" to "$HOME/.snap" (or to "$HOME/.local/share/snap" in accordance with the XDG spec)

"Changing this in the source code is possible but not very easy as the value is spelled out in a very peculiar way in the apparmor profile for snap-confine and all the snaps."

Actually, this isn't particularly difficult in and of itself. We could simply drop the complicated bit in the home interface we have now that carves out the snap dir (since it won't be special any more_ then simply allow @{HOME}/.snap/... by default.

The problem is all the other details that Zygmunt and Oliver mentioned, plus other things (eg, do we allow both directories? If we allow both, what does that mean for the home interface? Do we allow compatibility symlinks? Do we do a data migration? Do we do data migration upon revert of the core snap? What happens to applications if the only core snap is reverted, if only the app snap is reverted, if both are reverted? How do we handle snaps that hard-code ~/snap/... instead of using $SNAP_USER_DATA and $SNAP_USER_COMMON (this might be more common than you think-- I know of a lot of examples that use getent/getpwent() for things-- they may then be depending on being able to just tack on 'snap/<name>/common'? These questions are just the ones OTOH, I'm sure there are others.

Like Oliver said, there is conceptual work. Whenever this is implemented, I very much expect bugs coming in for what Oliver mentioned: "my snap's data is not discoverable because it is in a hidden directory" (which was the reason why it is 'snap' now instead of '.snap'; we had the same debates on 'snap' vs '.snap' when decided on this long ago).