Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: cpython (user goal)
rejecting: cpython-3.4.0 (constraint from user target requires ==3.3.1)
rejecting: cpython-3.3.1 (conflict: requires pkg-config package
python-3.3-any, not found in the pkg-config database)
rejecting: cpython-3.3.0, cpython-3.2.0, cpython-3.1.4, cpython-3.1.3,
cpython-3.1.2.1, cpython-3.1.2.0, cpython-3.1.1.0, cpython-3.1.0 (constraint
from user target requires ==3.3.1)
Dependency tree exhaustively searched.