snapd installs files in /etc which break bzr (via etckeeper)

[James Troup]

I use etckeeper with bzr. After installing a snap, its apt hook
started to fail with the following:

bzr: ERROR: bzrlib.errors.InvalidEntryName: Invalid entry name: snap-ubuntu\x2dcore-109.mount

And indeed:

root@ornery:/etc/systemd/system# ls -l snap-*
-rw-r--r-- 1 root root 155 Apr 25 19:10 snap-notes-1.mount
-rw-r--r-- 1 root root 177 Apr 25 19:10 snap-ubuntu\x2dcore-109.mount
root@ornery:/etc/systemd/system#

[John Lenton (chipaca)]

Unfortunately AFAIK that name is mandated by systemd for a mount unit that mounts /snap/ubuntu-core/109.2

      Mount units must be named after the mount point directories they control. Example: the mount point
       /home/lennart must be configured in a unit file home-lennart.mount. For details about the escaping
       logic used to convert a file system path to a unit name, see systemd.unit(5). Note that mount units
       cannot be templated.

[John Lenton (chipaca)]

One thing we *could* do is create them every boot, under /run/systemd/system, but that's part of a bigger piece of work

[Jacek Nykis (jacekn)]

It may be something that's best fixed in bzr, see LP1035045