Thanks for your report. As you figured out it happened because mythbuntu
is no longer supported [1] and it was the only desktop metapackage
installed on your system.
I'm moving this bug to the mythbuntu project.
[1]
http://www.mythbuntu.org/home/news/mythbuntusolongandthanksforallthefish
**
background info:
system had been installed under hardy heron and upgraded many times.
Last running OS on this hardware config was 17.10 artful.
Many years have passed and very little of the original hardware hasn't
been replaced. I decided I wanted to clean out the cruft and do a clean
start. So
** Tags added: zesty2artful
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https://bugs.launchpad.net/bugs/1739934
Title:
release upgrade failing from zesty to artful
To manage notifications about this bug go to:
system needed another "apt dist-upgrade" before "do-release-upgrade"
would succeed. The solution became clear after seeing this in main.log
and investigating the package:
2017-12-23 19:57:21,565 ERROR Dist-upgrade failed: 'The package
'mythbuntu-desktop' is marked for removal but it is in the
