[Bug 1872902] Re: Upgrade to Focal now removes chrony

[Balint Reczey]

If I add the following pinning chrony is kept:

# cat /etc/apt/preferences.d/chrony-pin 
Package: systemd-timesyncd
Pin: release n=focal*
Pin-Priority: -1

Ntp packages is affected the same way.

Systemd's dependencies (systemd-timesyncd | time-daemon) allows keeping
chrony, ntp, etc., but APT chooses systemd-timesyncd. Maybe we need a
quirk or an adjustment of a quirk in u-r-u.



** Also affects: ntp (Ubuntu)
   Importance: Undecided
       Status: New

** Also affects: apt (Ubuntu)
   Importance: Undecided
       Status: New

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

** Tags added: release-ff-incoming

** Tags removed: release-ff-incoming
** Tags added: rls-ff-incoming

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https://bugs.launchpad.net/bugs/1872902

Title:
  Upgrade to Focal now removes chrony

Status in apt package in Ubuntu:
  New
Status in chrony package in Ubuntu:
  Invalid
Status in ntp package in Ubuntu:
  Invalid
Status in systemd package in Ubuntu:
  Invalid
Status in ubuntu-release-upgrader package in Ubuntu:
  New

Bug description:
  Due to changes in systemd for bug 1849156 this issue now happens.

  On an upgrade for people that had chrony installed on a do-release upgrade it now will:
  Calculating the changes
    MarkInstall systemd-timesyncd:amd64 < none -> 245.4-4ubuntu1 @un uN Ib > FU=1
     Removing: chrony
      MarkDelete chrony:amd64 < 3.2-4ubuntu4.2 -> 3.5-6ubuntu3 @ii umU Ib > FU=0

  That isn't what users want, those who had chrony installed would want
  to get chrony upgraded and systemd-timesyncd (which now is a separate
  pacakge) not installed.

  I'd ask you to revise the dependencies that got changes in systemd
  245.4-2ubuntu1 so that on an upgrade from e.g. Bionic chrony stays
  installed as that was an opt-in chances are quite high people would
  want to keep it that way.

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