Bug#1115595: Maybe a duplicate of #1087689

[Enneamer]

The content of evolution-source-registry.service suggests it uses a 
binary (/usr/libexec/evolution-source-registry) that is only available 
in evolution-data-server. Therefore the package assignment is correct.

The main issue is that obexd depends on evolution-data-server, but it is 
not added as a recommended/suggested package in bluez-obexd. Therefore, 
unless other packages pull evolution-data-server in, bluez-obexd would 
not work properly, and the computer would be advertised as an audio 
device instead of a computer that can receive files.

Obexd depending on some heavy GNOME libraries is indeed awkward. 
However, this is not Debian's fault. Ideally, obexd can be made 
DE-agnostic, as 1087689 proposed.