Branch /branches/geps/gep-029-gtk3 has been reintegrated in trunk.
So crashes abound now. most fixes are simple, look at the changelog done for equal code, and change likewise:
All glade files not touched yet should be opened in current glade for GTK3 and resaved, then fixed for layout problems. Seen changes in glade files fixed already by me in case of issues.
For documentation links, and how to install the new requirements, see the GEP:
Fixing the crashes in a part will make you acquinted with the new way of working.
I'll fix futher things the coming days.
Main issue will probably be geography view which is now disabled. If needed we will have to help out in porting the dependency. On the plus side, the developer will know the code will be used immediately, helping to find bugs.