Only tweak cabal file as necessary
Only tweak cabal file as necessary

I think this was a mistaken change in
9f06ccfdb8fe6cc1156ce04c815731e63d3717d1. Perhaps ironically, without
this commit, we end up regularly triggering #3549 instead of only doing
so when using pvp-bounds.

anton-dessiatov/stack,juhp/stack,anton-dessiatov/stack,juhp/stack