Resolving dependencies...
cabal: Could not resolve dependencies:
[__0] next goal: gi-ibus (user goal)
[__0] rejecting: gi-ibus-1.5.2 (conflict: pkg-config package ibus-1.0(==1.5 ||
>1.5) && <1.6, not found in the pkg-config database)
[__0] rejecting: gi-ibus-1.5.1 (constraint from user target requires ==1.5.2)
[__0] fail (backjumping, conflict set: gi-ibus)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: gi-ibus