Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: bullet (user goal)
rejecting: bullet-0.2.4, bullet-0.2.3 (constraint from user target requires
==0.2.2)
rejecting: bullet-0.2.2 (conflict: requires pkg-config package bullet-any, not
found in the pkg-config database)
rejecting: bullet-0.2.1, bullet-0.1.1 (constraint from user target requires
==0.2.2)
Dependency tree exhaustively searched.