The reason systemd-timesyncd is forcibly installed on upgrade is that it is in the minimal task:
$ apt-cache show systemd-timesyncd | grep Task Task: minimal, ubuntu-desktop-minimal-default-languages, ubuntu-desktop-minimal-default-languages, ubuntu-desktop-minimal-default-languages, ubuntu-desktop-minimal-default-languages, ubuntu-desktop-minimal-default-languages, ubuntu-desktop-minimal-default-languages, ubuntu-desktop-minimal-default-languages, ubuntu-desktop-default-languages, ubuntu-desktop-default-languages, ubuntu-desktop-default-languages, ubuntu-desktop-default-languages, ubuntu-desktop-default-languages, ubuntu-desktop-default-languages, ubuntu-desktop-default-languages, ubuntu-desktop-default-languages, ubuntu-core -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1872902 Title: Upgrade to Focal now removes chrony Status in Release Notes for Ubuntu: New Status in apt package in Ubuntu: Invalid 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: Confirmed Status in apt source package in Focal: Invalid Status in chrony source package in Focal: Invalid Status in ntp source package in Focal: Invalid Status in systemd source package in Focal: Invalid Status in ubuntu-release-upgrader source package in Focal: Confirmed 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. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-release-notes/+bug/1872902/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
