Pakistani defense philosophy has no wasteful use of national competition or pride involved in it.I doubt anything they claim as indegeneous.
To quote a very senior R&D lead
"We only try to make it at home if we cannot procure it or have someone make it for us".
No program is pursued at home for "pride" unless it is a critical resource, no program is done from scratch if plans that can give a ten year boost to knowledge are available.
Compared to billions poured in neighboring countries for the same capability, I'd say it has payed off with 1/20th of that investment.
After all, coming to refueling.. why waste resources on figuring out plumbing when you folks are ready and willing to sell it at a fraction of the risk and cost it would take for us to do it?
At the end of the day, Papers , indigenous development are irrelevant.. only the number of Indians that can be killed per minute is..and right now that is in the nice tens of millions.