Resolving dependencies... Error: cabal: Could not resolve dependencies: [__0] next goal: harfbuzz-pure (user goal) [__0] rejecting: harfbuzz-pure-1.0.0.1, harfbuzz-pure-1.0.0.0 (constraint from user target requires ==0.1.0.1) [__0] rejecting: harfbuzz-pure-0.1.0.1 (conflict: pkg-config package harfbuzz-any, not found in the pkg-config database) [__0] rejecting: harfbuzz-pure-0.1.0.0 (constraint from user target requires ==0.1.0.1) [__0] fail (backjumping, conflict set: harfbuzz-pure) After searching the rest of the dependency tree exhaustively, these were the goals I've had most trouble fulfilling: harfbuzz-pure