Resolving dependencies...
cabal: Could not resolve dependencies:
[__0] next goal: libversion (user goal)
[__0] rejecting: libversion-0.1.0 (conflict: pkg-config package
libversion-any, not found in the pkg-config database)
[__0] fail (backjumping, conflict set: libversion)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: libversion