Comment 29 for bug 1624644

On Wed, Sep 27, 2017 at 1:49 PM, Brian Murray <email address hidden> wrote:
> @Balint re "@Jarno: IMO Unattended-Upgrade::Remove-Unused-Dependencies
> is already a risky option and I don't recommend enabling it because it
> may remove packages which are not used according the to package-
> dependency chain but which users rely on using software that is not
> packaged."
>
> Could you give me an example of how people would install dependencies
> for software that is not package that would also set the
> "is_auto_removable" flag in the apt cache to True? I can't think of a
> situation like this.

I had the opposite situation in my mind. People would remove packages
which are not auto removable, like ubuntu-desktop (for example because
something ubuntu-desktop depends on is acting badly) and then many
package in ubuntu-desktop's dependency change become auto removable:

$ sudo apt-get remove ubuntu-desktop
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
  a11y-profile-manager-indicator activity-log-manager adium-theme-ubuntu
  aisleriot app-install-data-partner apturl apturl-common baobab bluez-cups
...
  xorg
Use 'sudo apt autoremove' to remove them.
The following packages will be REMOVED:
  ubuntu-desktop
0 upgraded, 0 newly installed, 1 to remove and 7 not upgraded.
After this operation, 46,1 kB disk space will be freed.
Do you want to continue? [Y/n]

It is a simpler problematic situation than the one I originally mentioned, u-u
would remove software which is probably in use, no additional software is
broken.