Public bug reported:
[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.
** Affects: livecd-rootfs (Ubuntu)
Importance: Undecided
Status: Fix Released
** Affects: livecd-rootfs (Ubuntu Xenial)
Importance: Undecided
Status: New
** Affects: livecd-rootfs (Ubuntu Bionic)
Importance: Undecided
Status: In Progress
** Also affects: livecd-rootfs (Ubuntu Xenial)
Importance: Undecided
Status: New
** Also affects: livecd-rootfs (Ubuntu Bionic)
Importance: Undecided
Status: New
** Changed in: livecd-rootfs (Ubuntu)
Status: New => Fix Released
** Changed in: livecd-rootfs (Ubuntu Bionic)
Status: New => In Progress
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https://bugs.launchpad.net/bugs/1800610
Title:
[SRU] minimize number of manually installed packages
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