[Bug 1989198] Re: Snaps info pre-fetching seems broken

[Dan Bungert]

We believe a fix for this can be found in Subiquity 22.10.1.  On
install you will be offered to update to the new version of the
installer if network is available, or you can perform a manual update
by running the follwing in a terminal:
sudo snap refresh subiquity


** Changed in: subiquity (Ubuntu)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1989198

Title:
  Snaps info pre-fetching seems broken

Status in subiquity package in Ubuntu:
  Fix Released

Bug description:
  It seems that we have a mechanism to pre-fetch information about the
  snaps available. My understanding is that it impacts how fast the
  screen shows the information about a specific snap when the user
  presses enter on the snap list view.

  However, in practice I always get the following debug log, which seems
  to indicate that we did not pre-fetch any snap info.

  2022-09-09 13:09:46,158 DEBUG subiquity.server.controllers.snaplist:70
  fetched list of 0 snaps

  The code does this:

              task = self.tasks[None] = \
                      SingleInstanceTask(self._load_list, propagate_errors=False)
              task.start_sync()
              self.pending_snaps = self.model.get_snap_list()
              log.debug("fetched list of %s snaps", len(self.pending_snaps))

  and it feels like we should wait for the task to complete before
  calling self.model.get_snap_list().

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