Resolving dependencies...
cabal: Could not resolve dependencies:
[__0] next goal: gi-json (user goal)
[__0] rejecting: gi-json-1.0.2 (conflict: pkg-config package
json-glib-1.0==1.4.0 || >1.4.0, not found in the pkg-config database)
[__0] fail (backjumping, conflict set: gi-json)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: gi-json