Resolving dependencies...
cabal: Could not resolve dependencies:
trying: darcs-fastconvert-0.2.1 (user goal)
trying: mtl-2.2.1 (dependency of darcs-fastconvert-0.2.1)
next goal: darcs (dependency of darcs-fastconvert-0.2.1)
rejecting: darcs-2.10.0, 2.8.5, 2.8.4, 2.8.3, 2.8.2, 2.8.1, 2.8.0 (conflict:
darcs-fastconvert => darcs>=2.5 && <2.6)
rejecting: darcs-2.5.2, 2.5.1 (conflict: mtl==2.2.1, darcs => mtl>=1.0 &&
<2.1)
rejecting: darcs-2.5 (conflict: mtl==2.2.1, darcs => mtl>=1.0 && <1.2)
rejecting: darcs-2.4.4, 2.4.3, 2.4.1, 2.4, 2.3.1, 2.3.0, 2.2.1, 2.2.0,
2.1.99.0, 2.1.98.2, 2.1.2.2, 2.1.2.1 (conflict: darcs-fastconvert =>
darcs>=2.5 && <2.6)
Dependency tree exhaustively searched.