Comment 6 for bug 1667903

http://choqok.gnufolks.org/2016/08/choqok-1-6-beta-2-released/

"Note that qoauth-qt5 is required! Choqok cannot run with qoauth-qt4 anymore."

Looks like this version 1.6 was merged from debian experimental where the required Qt5 v2 based qoauth version exists, to zesty where it does not.

The debian build dependencies were deliberately set to

https://anonscm.debian.org/git/collab-maint/choqok.git/commit/?id=565331bac22678c15c5ea52c3f5526462bb9b52c

* Build depend upon qoauth >= 2.0.1~1 to ensure we are using the Qt5-based
+ version.

but seem to have been mistakenly relaxed/overridden on the merge to ubuntu zesty.

* Use unversioned oauth as of now as the debian version isnt into
    ubuntu as yet.

Hence this inevitably broken.