Resolving dependencies...
cabal: Could not resolve dependencies:
trying: hist-pl-0.3.2 (user goal)
trying: hist-pl-dawg-0.2.1 (dependency of hist-pl-0.3.2)
trying: dawg-0.11 (dependency of hist-pl-dawg-0.2.1)
trying: transformers-0.4.2.0/installed-21d... (dependency of dawg-0.11)
trying: mtl-2.2.1 (dependency of dawg-0.11)
next goal: pipes (dependency of hist-pl-0.3.2)
rejecting: pipes-4.1.7, 4.1.6, 4.1.5, 4.1.4, 4.1.3, 4.1.2, 4.1.1, 4.1.0
(conflict: hist-pl => pipes>=4.0 && <4.1)
rejecting: pipes-4.0.2, 4.0.1 (conflict:
transformers==0.4.2.0/installed-21d..., pipes => transformers>=0.2.0.0 &&
<0.4)
rejecting: pipes-4.0.0 (conflict: mtl==2.2.1, pipes => mtl>=2.0.1.0 && <2.2)
rejecting: pipes-3.3.0, 3.2.0, 3.1.0, 3.0.0, 2.5.0, 2.4.0, 2.3.0, 2.2.0,
2.1.0, 2.0.0, 1.0.2, 1.0.1, 1.0 (conflict: hist-pl => pipes>=4.0 && <4.1)
Dependency tree exhaustively searched.