Resolving dependencies...
Error: cabal: Could not resolve dependencies:
[__0] next goal: gi-harfbuzz (user goal)
[__0] rejecting: gi-harfbuzz-0.0.9 (conflict: pkg-config package
harfbuzz-gobject>=1, not found in the pkg-config database)
[__0] rejecting: gi-harfbuzz-0.0.7, gi-harfbuzz-0.0.6, gi-harfbuzz-0.0.5,
gi-harfbuzz-0.0.4, gi-harfbuzz-0.0.3, gi-harfbuzz-0.0.2, gi-harfbuzz-0.0.1
(constraint from user target requires ==0.0.9)
[__0] fail (backjumping, conflict set: gi-harfbuzz)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: gi-harfbuzz