Looks to me like kaffeine never was updated to use
TQTinterface.
Is kaffeine supposed to build without that support?
Yes. Many of the applications were not converted yet;
they can be
(mostly) auto-converted after Qt4 support has been
completed and
stabilized.
Wait. Are you saying the package should build without tqtinterface, or
saying conversion is needed?
Several of these apps not compiling will be show-stoppers for many users.