Resolving dependencies...
Error: cabal: Could not resolve dependencies:
[__0] next goal: simple-cairo (user goal)
[__0] rejecting: simple-cairo-0.1.0.6 (conflict: pkg-config package cairo-any,
not found in the pkg-config database)
[__0] rejecting: simple-cairo-0.1.0.5 (constraint from user target requires
==0.1.0.6)
[__0] fail (backjumping, conflict set: simple-cairo)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: simple-cairo