Comment 4 for bug 1971763

There probably should not be a dependency on a virtual package like this, when it contains options that will not actually do what is required of the depency. Wslu is an especially annoying option to have in the list, because it causes all sorts of problems when installed without actually using Windows.

Changing it to graphical browsers only could perhaps be a solution. Although a browser like elinks can be used just fine to read Gimp's help file, getting rid of the problematic wslu as a possible dependency would be worth the loss imo.

Additionally, if relying on the presence of the transitional Firefox deb package is the only way to detect the presence of Firefox snap (when checking dependencies), that Firefox deb package should at least be installed by default, to make sure new users don't run into this problem. A better solution would be to detect the presence of Firefox snap directly, but I don't know if this is technically difficult.

A seperate issue in this case is that, currently, Firefox Snap can't actually open Gimp's help file. It's sandboxing keeps it from accessing local html files not located in /home. Hopefully, this bug will be fixed by Mozilla.