Bug#996462: libc++-13-dev: uninstallable on s390x

[Sebastian Ramacher]

Package: libc++-13-dev
Version: 1:13.0.0-3
Severity: serious

Fixing #998510 causes installability issues on s390x:

$ apt-get install libc++-13-dev
Reading package lists...
Building dependency tree...
Reading state information...
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 libc++-13-dev : Depends: libunwind-13-dev but it is not installable
E: Unable to correct problems, you have held broken packages.


Cheers
-- 
Sebastian Ramacher