Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: mathblog (user goal)
rejecting: mathblog-0.6, 0.5, 0.4, 0.3, 0.2 (global constraint requires ==0.1)
trying: mathblog-0.1
trying: base-4.8.1.0/installed-4f7... (dependency of mathblog-0.1)
next goal: unix (dependency of mathblog-0.1)
rejecting: unix-2.7.1.0/installed-643..., 2.7.1.0, 2.7.0.1, 2.7.0.0, 2.6.0.1,
2.6.0.0, 2.5.1.1, 2.5.1.0, 2.5.0.0 (conflict: mathblog => unix>=2.3 && <2.5)
rejecting: unix-2.4.2.0, 2.4.1.0 (conflict: base==4.8.1.0/installed-4f7...,
unix => base>=4.2 && <4.4)
rejecting: unix-2.4.0.2, 2.4.0.1 (conflict: base==4.8.1.0/installed-4f7...,
unix => base>=4.2 && <4.3)
rejecting: unix-2.4.0.0 (conflict: base==4.8.1.0/installed-4f7..., unix =>
base>=4.1 && <4.3)
rejecting: unix-2.3.2.0, 2.3.1.0, 2.3.0.0 (conflict:
base==4.8.1.0/installed-4f7..., unix => base<4.3)
rejecting: unix-2.2.0.0, 2.0 (conflict: mathblog => unix>=2.3 && <2.5)
Dependency tree exhaustively searched.