Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: json-python (user goal)
rejecting: json-python-0.4.0.1, json-python-0.4.0.0 (constraint from user
target requires ==0.3.0.1)
rejecting: json-python-0.3.0.1 (conflict: requires pkg-config package
python-any, not found in the pkg-config database)
Dependency tree exhaustively searched.