Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: gi-gdkx11 (user goal)
rejecting: gi-gdkx11-3.0.2 (conflict: requires pkg-config package
gdk-x11-3.0>=3.22, not found in the pkg-config database)
rejecting: gi-gdkx11-3.0.1 (constraint from user target requires ==3.0.2)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: gi-gdkx11