[Bug 1633520] Re: Support dbus runtime relocation

[Michael Terry]

Alberto, sure that could work in principle.  Good point.

- We'd have to not only copy the .service file, but modify its Exec=
line to point inside the correct snap and update the file when a new
snap version gets installed (or delete it if the new snap doesn't use
the file anymore, etc).

- What is the use case that you hit this with?  In my use case, both the
session dbus daemon and the session dbus .service are all inside a
monolithic snap.  But it sounds like you want multiple snaps to install
session .service files that can be run from another "session" snap?
Just curious what you're envisioning.

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https://bugs.launchpad.net/bugs/1633520

Title:
  Support dbus runtime relocation

Status in D-Bus:
  Unknown
Status in dbus package in Ubuntu:
  New
Status in snapd package in Ubuntu:
  New

Bug description:
  For example, when running in a snap.

  I ran into this while testing a unity8 desktop session snap.  Session
  services were being dbus-activated, but dbus was running the hardcoded
  paths in the session desktop files.  Which weren't pointed into the
  snap.

  DBus has support for relocating those paths, but it only does so on
  Windows.

  I've added a patch to support $DBUS_ROOT on Unix and relocate paths as
  needed.  I've linked the upstream bug here.  We may want to consider
  patching Ubuntu while we wait for it to land upstream.

  I've attached the patch here too.

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