Hi,

I've just filed a bug against src::zipios++ in regards of transitioning
zipios++ to version 2, as there are plans that FreeCAD will soon move
from the ancienct 0.1.7 version to version 2.x.

Beside FreeCAD, only enigma is using zipios++. Additionally, upstream
enigma as removed zipios recently [1] , (but not cut an official release),
so it might be possible to package a git snapshot to remove the
dependency on zipios alltogether.

(I've not checked if current enigma works with the new zipios)

[1] https://github.com/Enigma-Game/Enigma/commit/81d946c96e61