Is it possible to convert a visual GNURadio project to a standalone code probably in C that would run inside Pluto?
Is there any tutorial about how to do this?
No. There was a user that gave a basic outline: GNU Radio *on* the PlutoSDR: Proof of Concept However, unless you are a seasoned developer I would not try to do this. It fundamentally requires building a new rootfs for the device.
it seems like there is no documentation for Pluto and trying to do even a trivial task is a real challenge
What are you trying to do that is trivial?
I found this Python inside ADALM-Pluto (PlutoSDR) and it seems like its possible to install Python inside Pluto which could enable to execute flow-graphs developed in gnu radio to be run inside Pluto standalone. But the link to download Python-2.7.3.tar.gz is not available anymore. Do you know where I can download it to try this out? Thanks!