I had a quick glance at /usr/bin/unattended-upgrade, and it looks like
that Unattended-Upgrade::Remove-Unused-Dependencies only autoremoves
dependancies that have become auto-removeable during *this* very run of
unattended-upgrade! Anything that had already been auto-removeable
before invokation of /usr/bin/unattended-upgrade will not get
autoremoved by unattended-upgrade.
(See lists "pkgs_auto_removable" set in line 706, "now_auto_removable"
set in line 817, and only their difference being autoremoved in line
819)
Is that correct?
If this is the intended functionality of
Unattended-Upgrade::Remove-Unused-Dependencies, then this is not a bug with
unattended-upgrade, but with its documentation.
/etc/apt/apt.conf.d/50unattended-upgrades says
// Do automatic removal of new unused dependencies after the upgrade
// (equivalent to apt-get autoremove)
Unattended-Upgrade::Remove-Unused-Dependencies "true";
But it's actually only equivalent to apt-get autoremove if there was
nothing to be autoremoved beforehand. That should be clarified.
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https://bugs.launchpad.net/bugs/1267059
Title:
"Unattended-Upgrade::Remove-Unused-Dependencies" does not work
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