Created attachment 1558387 [details]
proposed patch

As noted here:
https://mail.gnome.org/archives/desktop-devel-list/2019-April/msg00016.html
evolution-data-server's libebook API will change, which will mean also the soname version bump from 19 to 20. If I read the code Caolan pointed me to properly, then the used APIs from e_book_client "namespace" is only e_book_client_get_contacts_sync, whose prototype had not been changed. The changed prototypes are for create/modify/remove of the contacts, a new argument had been added to those functions, but libreoffice doesn't seem to use those functions.

That is, the change should be pretty simple, possibly like the one I attached here. I'm not able to compile and test libreoffice fully with this change, unfortunately.

The changes from 
https://gitlab.gnome.org/GNOME/evolution-data-server/issues/33
are currently planned for the 3.33.2 release, which means May 20. I'll update this bug report when it's all done, libreoffice will require rebuild in rawhide too. I'd like to have the patches prepared, no matter whether the 3.33.2 will contain the change or not.