Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: mbox-tools (user goal)
rejecting: mbox-tools-0.2.0.4, 0.2.0.3, 0.2.0.2, 0.2.0.1 (global constraint
requires ==0.2.0.0)
trying: mbox-tools-0.2.0.0
trying: hsemail-1.7.7 (dependency of mbox-tools-0.2.0.0)
trying: mtl-2.2.1 (dependency of hsemail-1.7.7)
trying: monads-fd-0.2.0.0 (dependency of mbox-tools-0.2.0.0)
next goal: transformers (dependency of mbox-tools-0.2.0.0)
rejecting: transformers-0.4.2.0/installed-21d..., 0.4.3.0, 0.4.2.0, 0.4.1.0
(conflict: monads-fd => transformers==0.2.*)
rejecting: transformers-0.3.0.0, 0.2.2.1, 0.2.2.0, 0.2.1.0, 0.2.0.0, 0.1.4.0,
0.1.3.0, 0.1.1.0, 0.1.0.1, 0.1.0.0, 0.0.1.0, 0.0.0.0 (conflict: mtl =>
transformers==0.4.*)
rejecting: transformers-0.4.0.0 (conflict: monads-fd => transformers==0.2.*)
Dependency tree exhaustively searched.