Package: gwyddion Version: 2.45-1 Gwyddion uses the minizip library to work with zip-compressed files such as .plux. Minizip is widely available because it comes with zlib, a base compression library used just about everywhere in everything. Yet, it is not a required nor recommended dependency in the debian gwyddion package, which makes the feature of opening zipped packages missing in debian.
Adding a simple dependency to libminizip-dev in the control file seems to work. Tested on several versions of Ubuntu.