I initially marked this Won't Fix for xenial, as there will be no more
desktop or server images produced for xenial, but if this also has
benefit on cloud images, we might want to look into it for that.
** Changed in: livecd-rootfs (Ubuntu Xenial)
Status: New => Won't Fix
** Changed in: livecd-rootfs (Ubuntu Xenial)
Status: Won't Fix => Triaged
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https://bugs.launchpad.net/bugs/1800610
Title:
[SRU] minimize number of manually installed packages
Status in livecd-rootfs package in Ubuntu:
Fix Released
Status in livecd-rootfs source package in Xenial:
Triaged
Status in livecd-rootfs source package in Bionic:
Fix Released
Bug description:
[Impact]
Releases prior to cosmic mark almost all packages manually installed, meaning
that obsolete packages are not autoremoved when they should. We fixed this in
cosmic, in trunk r1695, by including a new script that marks as automatically
installed all dependencies of manually-installed metapackages.
[Test case]
Run a build and check in the log that some packages are visited by the script
in more than one iterations.
[Regression potential]
First of all, this does not change existing installations; only new ones. The
change can cause packages to be autoremoved that were not autoremoved before
after performing a package management operation, or dependency change in
packages.
The change is essentially safe: Since we only mark dependencies of
packages in the section "metapackages", and since those receive
special treatment by apt:
1. removal due to dependencies/conflicts: the manual bit transfers from the
meta to its deps
2. explicit removal (apt remove meta): meta and its dependencies are removed
It is not possible to accidentally uninstall the entire metapackage
with its dependencies.
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