OSX/CI: kdevelop build failure on branch framework

[Marko Käning]

While trying to build kdevelop I ran into this issue:

--- 
/Users/marko/WC/KDECI-builds/kdevelop/projectmanagers/cmake/cmakemanager.cpp:34:10: fatal error: 'qjson/parser.h' file not found
#include <qjson/parser.h>
         ^
13 warnings generated.
---

Which framework supplies the qjson header files? (Or are those not from KDE at all, but rather belonging to the qjson installed on the system?) 

Though, I never saw this popping up so far anywhere in KF5...

Greets,
Marko