Complete BS, What source code are you talking about RVV AE? RVV AE is quite expensive, and the reason for Derby/Python IV has been because of higher shelf life, different seeker and a huge bang for the buck price, with RVV SD and even better K77 Aesa coming into the picture R77 line is going to become a game changer and it will still remain in contention and yes India posses all the system architecture bus address which I assume you are referring to as source code for Rvv ae...
For the Long range and medium range AAM solution for LCA and future products was to consolidate astra1/2 AAM series thus Python IV/ Derby solutions are stop gap measure and not permanent ordinances. If R77 was chosen, you would see a larger book order and eventually some babu pushing for ToT deal for RVV series instantly killing the astra program....
I dont know, because I dont have specifactions of Jf 17 to compare with and I am not Ajai shukla, and I try to avoid foot in my mouth syndrome