Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: gi-atk (user goal)
rejecting: gi-atk-2.0.6, gi-atk-2.0.5, gi-atk-2.0.4, gi-atk-2.0.3,
gi-atk-2.0.2, gi-atk-2.0.1, gi-atk-0.2.18.15, gi-atk-0.2.18.14,
gi-atk-0.2.18.13, gi-atk-0.2.18.12, gi-atk-0.2.18.10, gi-atk-0.2.16.12
(constraint from user target requires ==0.2.16.11)
rejecting: gi-atk-0.2.16.11 (conflict: requires pkg-config package atk>=2.16,
not found in the pkg-config database)
rejecting: gi-atk-0.2.16.10, gi-atk-0.2.16.9, gi-atk-0.2.16.8 (constraint from
user target requires ==0.2.16.11)
Dependency tree exhaustively searched.