Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: GPX (user goal)
rejecting: GPX-0.8.0, GPX-0.7.0, GPX-0.6.3, GPX-0.6.2, GPX-0.6.1, GPX-0.6.0,
GPX-0.5, GPX-0.4.8, GPX-0.4.7, GPX-0.4.6, GPX-0.4.5 (constraint from user
target requires ==0.4.4)
trying: GPX-0.4.4
next goal: base (dependency of GPX-0.4.4)
rejecting: base-4.9.0.0/installed-4.9... (conflict: GPX => base<4 && >=3 ||
<3)
rejecting: base-4.9.0.0, base-4.8.2.0, base-4.8.1.0, base-4.8.0.0,
base-4.7.0.2, base-4.7.0.1, base-4.7.0.0, base-4.6.0.1, base-4.6.0.0,
base-4.5.1.0, base-4.5.0.0, base-4.4.1.0, base-4.4.0.0, base-4.3.1.0,
base-4.3.0.0, base-4.2.0.2, base-4.2.0.1, base-4.2.0.0, base-4.1.0.0,
base-4.0.0.0, base-3.0.3.2, base-3.0.3.1 (constraint from non-upgradeable
package requires installed instance)
Dependency tree exhaustively searched.