Resolving dependencies... Error: cabal: Could not resolve dependencies: [__0] next goal: gi-gio (user goal) [__0] rejecting: gi-gio-2.0.38 (conflict: pkg-config package gio-2.0-any, not found in the pkg-config database) [__0] rejecting: gi-gio-2.0.37, gi-gio-2.0.36, gi-gio-2.0.35, gi-gio-2.0.34, gi-gio-2.0.33, gi-gio-2.0.32, gi-gio-2.0.30, gi-gio-2.0.29, gi-gio-2.0.28, gi-gio-2.0.27, gi-gio-2.0.26, gi-gio-2.0.25, gi-gio-2.0.24, gi-gio-2.0.23, gi-gio-2.0.22, gi-gio-2.0.21, gi-gio-2.0.20, gi-gio-2.0.19, gi-gio-2.0.18, gi-gio-2.0.17, gi-gio-2.0.16, gi-gio-2.0.15, gi-gio-2.0.14, gi-gio-2.0.13, gi-gio-2.0.12, gi-gio-2.0.11, gi-gio-2.0.10, gi-gio-2.0.9, gi-gio-2.0.8, gi-gio-2.0.7, gi-gio-2.0.6, gi-gio-2.0.5, gi-gio-2.0.4, gi-gio-2.0.3, gi-gio-2.0.2, gi-gio-2.0.1, gi-gio-0.2.46.15, gi-gio-0.2.46.14, gi-gio-0.2.46.13, gi-gio-0.2.46.12, gi-gio-0.2.46.10, gi-gio-0.2.44.12, gi-gio-0.2.44.11, gi-gio-0.2.44.10, gi-gio-0.2.44.9, gi-gio-0.2.44.8 (constraint from user target requires ==2.0.38) [__0] fail (backjumping, conflict set: gi-gio) After searching the rest of the dependency tree exhaustively, these were the goals I've had most trouble fulfilling: gi-gio