It’s not possible. Russian won’t share source code for integration of western components and weapons into Su 30. It has a history of not certifying airworthiness of our own MAWS and EW components on Mig 21s and Su 30s, hindering our own EWS development.
And if you are thinking about something along the lines of Chinese J Series jets, well forget about it. It will be too time consuming for India unlike China who had their own weapons, radars and EW pods fully developed before venturing into this risky business. And they had money to shut Russians from making too much noise, we just can’t.
We have integr Brahmos without Russia certifying it. No Russian certification is needed. When we use all new electronics from non Russian source, we do not need Rusian source code to integrate it. I think Astra MK1 is already integrated with MKI.