Resolving dependencies... cabal: Could not resolve dependencies: next goal: GPX (user goal) rejecting: GPX-0.8.0, 0.7.0, 0.6.3, 0.6.2, 0.6.1, 0.6.0, 0.5, 0.4.8, 0.4.7, 0.4.6, 0.4.5 (global constraint requires ==0.4.4) trying: GPX-0.4.4 trying: base-4.8.1.0/installed-4f7... (dependency of GPX-0.4.4) rejecting: GPX-0.4.4:+small_base (conflict: base==4.8.1.0/installed-4f7..., GPX-0.4.4:small_base => base<4 && >=3) rejecting: GPX-0.4.4:-small_base (conflict: base==4.8.1.0/installed-4f7..., GPX-0.4.4:small_base => base<3) Dependency tree exhaustively searched.