[Discuss-gnuradio] Patching airprobe to compile with GNURadio 3.7

[jkkjjkjk kjjkjkjkj]

Hey, I've spent the last couple of days trying to get airprobe rtl GSM software 
to work with the new GNU Radio.
I made a patch to grcompat to fill in the missing functions:
https://github.com/genjix/grcompat
And have got ported the gsm module for gsm-receive/src/lib/ to work. And I've 
ported gsm_receive_rtl for all the changes in module structure in GNU Radio. 
Now the program opens but I'm stuck at one last step.

Here is the line giving me difficulty:
https://github.com/genjix/airprobe/blob/master/gsm-receiver/src/python/gsm_receive_rtl.py#L98

#self.connect(self.src, self.tuner, self.interpolator, self.receiver, 
self.converter, self.output)
self.connect(self.src, self.tuner, self.interpolator)

I've commented the original which gives me this error:

configure_receiver
Traceback (most recent call last):
File "./gsm_receive_rtl.py", line 232, in <module>
tb = top_block()
File "./gsm_receive_rtl.py", line 99, in __init__
self.connect(self.src, self.tuner, self.interpolator, self.receiver)
File "/usr/local/lib/python2.7/dist-packages/gnuradio/gr/top_block.py", line 
131, in connect
self._connect(points[i-1], points[i])
File "/usr/local/lib/python2.7/dist-packages/gnuradio/gr/top_block.py", line 
141, in _connect
(dst_block, dst_port) = self._coerce_endpoint(dst)
File "/usr/local/lib/python2.7/dist-packages/gnuradio/gr/top_block.py", line 
152, in _coerce_endpoint
raise ValueError("unable to coerce endpoint")
ValueError: unable to coerce endpoint

Here is the source for the self.receiver type (a custom block for GSM 
receiving):

https://github.com/genjix/airprobe/blob/master/gsm-receiver/src/lib/gsm_receiver_cf.cc#L305

Any clues? What is the problem with gsm_receiver_cf that GNU Radio gives that 
error? It used to work with 3.6...

Thanks