Resolving dependencies...
cabal: Could not resolve dependencies:
trying: hails-bin-0.1.1.1 (user goal)
next goal: mtl (dependency of hails-bin-0.1.1.1)
rejecting: mtl-2.2.1, 2.2.0.1, 2.2, 2.1.3.1, 2.1.2, 2.1.1, 2.1 (conflict:
hails-bin => mtl>=2.0 && <2.1)
trying: mtl-2.0.1.1
next goal: transformers (dependency of mtl-2.0.1.1)
rejecting: transformers-0.4.2.0/installed-21d..., 0.4.3.0, 0.4.2.0, 0.4.1.0,
0.3.0.0 (conflict: mtl => transformers==0.2.*)
trying: transformers-0.2.2.1
next goal: mongoDB (dependency of hails-bin-0.1.1.1)
rejecting: mongoDB-2.0.9, 2.0.8, 2.0.7, 2.0.6, 2.0.5, 2.0.4, 2.0.3, 2.0.2,
2.0.1, 2.0, 1.5.0, 1.4.4, 1.4.3, 1.4.2, 1.4.1.1, 1.4.1, 1.4.0, 1.3.2, 1.3.1,
1.3.0 (conflict: hails-bin => mongoDB>=1.1.2 && <1.3)
trying: mongoDB-1.2.0
trying: transformers-base-0.4.4 (dependency of mongoDB-1.2.0)
trying: transformers-compat-0.4.0.4 (dependency of transformers-base-0.4.4)
trying: transformers-compat-0.4.0.4:-two
rejecting: transformers-compat-0.4.0.4:-three (conflict:
transformers==0.2.2.1, transformers-compat-0.4.0.4:three =>
transformers>=0.4.1 && <0.5)
rejecting: transformers-compat-0.4.0.4:+three (manual flag can only be changed
explicitly)
Dependency tree exhaustively searched.