this could be a good approach for a Gnuradio integration into SciLab:
Simulink import in Xcos
Importation of most of the Simulink schemas from Xcos.
Introduction of a mechanism to load and use Python code (objects in
particular) from Scilab.
So, Gnuradio blocks could be integrated via Python into a Scilab or
(Simulink-like with the possibility of Simulink imports).
I’m not sure if this is also possible with streaming data, or just for
calling single functions.