When can we dispense with linux and compile the GNU system and tools and other software, like one that use Qt, directly on Genode?
P.S.I know wishful thinking
This is actually not too far off. It is already possible to use the entirety of Genode's build system natively on Genode (that is, w/o Linux). So it is self-hosting already. To accomplish this, there is a Genode component called Noux which provides the Unix system-call API as a Genode service to its child processes. So GNU programs like gcc, vim, bash feel right at home in this environment.