I’m setting up my Whonix 15 for the first time, and GDebi (as GUI) cannot install .deb files. It simply closes off after I click ‘Install Package’.
This is a major problem for Whonix adoption. If users can’t easily install DEB files, then Whonix is way less usable. I’m sure most agree here that Whonix isn’t intended for developers only.
I’ve investigated and this appears to be caused by gksudo being removed in Buster onwards (related to moving to Wayland). The gdebi package moved to using policykit (the replacement method), but I’m thinking XFCE 4.12 may not have the code to make use of GDebi’s policykit implementation.