Resolving dependencies...
Error: cabal: Could not resolve dependencies:
[__0] next goal: dbus-menu (user goal)
[__0] rejecting: dbus-menu-0.1.3.1 (conflict: pkg-config package gtk+-3.0-any,
not found in the pkg-config database)
[__0] rejecting: dbus-menu-0.1.3.0, dbus-menu-0.1.2.0, dbus-menu-0.1.1.1,
dbus-menu-0.1.1.0, dbus-menu-0.1.0.0 (constraint from user target requires
==0.1.3.1)
[__0] fail (backjumping, conflict set: dbus-menu)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: dbus-menu