Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: mvclient (user goal)
rejecting: mvclient-0.4 (global constraint requires ==0.3)
trying: mvclient-0.3
trying: base-4.8.1.0/installed-4f7... (dependency of mvclient-0.3)
next goal: hexpat (dependency of mvclient-0.3)
rejecting: hexpat-0.20.9, 0.20.8, 0.20.7, 0.20.6, 0.20.5, 0.20.4, 0.20.3,
0.20.2, 0.20.1 (conflict: mvclient => hexpat==0.19.*)
trying: hexpat-0.19.10
next goal: List (dependency of hexpat-0.19.10)
rejecting: List-0.5.2, 0.5.1, 0.5.0 (conflict: hexpat => List>=0.4.2 && <0.5)
rejecting: List-0.4.4, 0.4.3, 0.4.2 (conflict: base==4.8.1.0/installed-4f7...,
List => base>=3 && <4.8)
rejecting: List-0.4.1, 0.4.0, 0.3.0, 0.2, 0.1 (conflict: hexpat => List>=0.4.2
&& <0.5)
Dependency tree exhaustively searched.