Seems like a update of gst-python is needed for this:

Traceback (most recent call last):
  File "/usr/bin/pulseeffects", line 6, in <module>
    a = Application()
  File "/usr/lib/python3.5/site-packages/PulseEffects/application.py", line 36, in __init__
    self.gst = GstEffects()
  File "/usr/lib/python3.5/site-packages/PulseEffects/gst.py", line 49, in __init__
    self.pipeline = self.build_pipeline()
  File "/usr/lib/python3.5/site-packages/PulseEffects/gst.py", line 109, in build_pipeline
    pipeline.add(self.limiter)
  File "/usr/lib/python3.5/site-packages/gi/overrides/Gst.py", line 60, in add
    if not Gst.Bin.add(self, arg):
TypeError: Argument 1 does not allow None as a value

Gstreamer 1.12 (D16) with plugin good (D18), bad (D19) and python (D24) is a prerequisite for this as we are not going to build an older version.

Any update on the status of the required dependencies for this? :)

Also, for anyone packaging this, I should mention that the latest version is now v3.0.0, not v1.2.8 as mentioned in the original request.

It is a big piece so it should be carefully planned/coordinated.
Now ferryd is now alive and kicking I guess an update of the gstreamer stack could be considered.

@kyrios123 I'm already planning a gstreamer update. Was originally slated for last weekend but will occur this weekend.

cool! that's a good news ?