A bucket of salt at best. The Su-35 deal was rumoured back during the Chinese Su-35 deal trumours. The Indian lobby in Russia is not dead and it wont let this happen. It will die at Putin's desk who wants to keep India on. There is a LOT opening up for Pakistan in Russia, but big ticket and "Make India whine" sales like the Su-35 arent happening anytime soon.
OTOH, expect a lot of smaller but significant sales in land warfare systems , naval systems and much more in less talked about but equally significant "building block" systems.
That being said, this is Putin; and if Modi tends to get too close to the US in his effort to isolate Pakistan and also emerge ahead of China - who knows.