Resolving dependencies...
Error: cabal: Could not resolve dependencies:
[__0] next goal: gi-gtk-layer-shell (user goal)
[__0] rejecting: gi-gtk-layer-shell-0.1.5 (conflict: pkg-config package
gtk-layer-shell-0-any, not found in the pkg-config database)
[__0] rejecting: gi-gtk-layer-shell-0.1.3, gi-gtk-layer-shell-0.1.2
(constraint from user target requires ==0.1.5)
[__0] fail (backjumping, conflict set: gi-gtk-layer-shell)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: gi-gtk-layer-shell