Resolving dependencies...
cabal: Could not resolve dependencies:
[__0] trying: hslua-core-1.0.0 (user goal)
[__1] next goal: lua (dependency of hslua-core)
[__1] rejecting: lua-1.0.0 (conflict: hslua-core => lua>=2.0 && <2.1)
[__1] fail (backjumping, conflict set: hslua-core, lua)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: hslua-core, lua