[Bug 1841225] Re: deb to snap transition uses an ubuntu release channel for the core18 snap

[Łukasz Zemczak]

** Also affects: ubuntu-release-upgrader (Ubuntu Disco)
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1841225

Title:
  deb to snap transition uses an ubuntu release channel for the core18
  snap

Status in ubuntu-release-upgrader package in Ubuntu:
  In Progress
Status in ubuntu-release-upgrader source package in Disco:
  New
Status in ubuntu-release-upgrader source package in Eoan:
  In Progress

Bug description:
  The release upgrader (DistUpgradeQuirks.py) tries to run the following
  command when upgrading a system without snaps installed to Ubuntu
  19.10 (eoan):

  snap install --channel stable/ubuntu-19.10 core18

  This channel does not exist and the release upgrade will fail e.g.:

  2019-08-23 03:24:45,533 DEBUG quirks: running eoanPostUpgrade
  2019-08-23 03:24:45,533 DEBUG running Quirks.eoanPostUpgrade
  2019-08-23 03:24:51,547 DEBUG install of snap core18 failed
  2019-08-23 03:25:51,348 DEBUG install of snap gnome-3-28-1804 succeeded

  The quirk should be updated so that an ubuntu release channel is not
  used when installing the core18 snap.

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