Resolving dependencies... cabal: Could not resolve dependencies: [__0] next goal: gi-vte (user goal) [__0] rejecting: gi-vte-2.91.28 (conflict: pkg-config package vte-2.91-any, not found in the pkg-config database) [__0] rejecting: gi-vte-2.91.27, gi-vte-2.91.26, gi-vte-2.91.25, gi-vte-2.91.24, gi-vte-2.91.23, gi-vte-2.91.22, gi-vte-2.91.21, gi-vte-2.91.19, gi-vte-2.91.18, gi-vte-2.91.17, gi-vte-2.91.16, gi-vte-2.91.15, gi-vte-2.91.14, gi-vte-2.91.13, gi-vte-2.91.12, gi-vte-2.91.11, gi-vte-2.91.10, gi-vte-2.91.9, gi-vte-2.91.8, gi-vte-2.91.7, gi-vte-2.91.6, gi-vte-2.91.5, gi-vte-2.91.4, gi-vte-2.91.3, gi-vte-2.91.2, gi-vte-2.91.1, gi-vte-0.0.42.15, gi-vte-0.0.42.14, gi-vte-0.0.42.13, gi-vte-0.0.42.12, gi-vte-0.0.42.10, gi-vte-0.0.40.12, gi-vte-0.0.40.11, gi-vte-0.0.40.10, gi-vte-0.0.40.9, gi-vte-0.0.40.8 (constraint from user target requires ==2.91.28) [__0] fail (backjumping, conflict set: gi-vte) After searching the rest of the dependency tree exhaustively, these were the goals I've had most trouble fulfilling: gi-vte