Problem building OOTs with GR 3.9.3.0 PPA package

[Daniel Estévez]

Hi,

I've encountered a problem in the gr-satellites continuous integration 
that I've traced to the change from GNU Radio 3.9.2.0 to 3.9.3.0 in the 
Ubuntu 20.04 PPA package (which is what I'm using in my CI Docker 
container).

The problem is that after building gr-satellites from source using GNU 
Radio 3.9.3.0 from the PPA package I get this error when importing the 
Python module:

Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/usr/local/lib/python3/dist-packages/satellites/__init__.py", 
line 44, in <module>
    from .satellites_python import *
ImportError: generic_type: type "ax100_decode" referenced unknown base 
type "gr::block"

The are no unusual messages during the compilation of gr-satellites.

If instead of using the PPA package I build GNU Radio 3.9.3.0 from 
source, then everything works.

I haven't tried to do this with other OOT modules. Has anyone 
encountered this problem?

I have some Dockerfiles that can be used to replicate this problem. See 
here:

https://github.com/daniestevez/gr-satellites/issues/303#issuecomment-944604966

Best,
Dani.

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