On Sat, 24 Dec 2016 11:47:21 +0900
Man_Without_Clue <love.cha...@gmail.com> wrote:
> Why this happens and how to avoid this?
As an appendix to Joe's extensive reply:
Once you found the package(s) that would cause e.g. Skype to be removed,
you can put these packages on "hold" (or "lock" in synaptic) so these
packages won't be upgraded on future system upgrades until the hold is
removed, allowing you to do full-/dist-upgrades without removing other
packages that you want to keep.
Unfortunately however, each one of synaptic, apt-get and aptitude have
their own "hold" system, which won't be respected by the other programs,
so to be on the safe side you might have to "hold" a package more than
just once.
To put a package on "hold" for apt-get, just do (as root):
apt-mark hold <packagename>
The aptitude command is similar:
aptitude hold <packagename>
In synaptic, select the package and pick from the menu
Package -> Lock Version
Regards
Michael
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