Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: mathblog (user goal)
rejecting: mathblog-0.6, 0.5 (global constraint requires ==0.4)
trying: mathblog-0.4
trying: base-4.8.1.0/installed-4f7... (dependency of mathblog-0.4)
next goal: HUnit (dependency of mathblog-0.4)
rejecting: HUnit-1.3.0.0, 1.2.5.2, 1.2.5.1, 1.2.5.0, 1.2.4.3, 1.2.4.2
(conflict: mathblog => HUnit>=1.2.2 && <1.2.3)
rejecting: HUnit-1.2.2.3, 1.2.2.1, 1.2.2.0 (conflict:
base==4.8.1.0/installed-4f7..., HUnit => base<4.7)
rejecting: HUnit-1.2.0.3, 1.2.0.2, 1.2.0.1, 1.2.0.0, 1.1 (conflict: mathblog
=> HUnit>=1.2.2 && <1.2.3)
Dependency tree exhaustively searched.