Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: v4l2 (user goal)
rejecting: v4l2-0.1.0.3, v4l2-0.1.0.2 (constraint from user target requires
==0.1)
trying: v4l2-0.1
trying: base-4.9.0.0/installed-4.9... (dependency of v4l2-0.1)
trying: time-1.6.0.1/installed-1.6... (dependency of
unix-2.7.2.0/installed-2.7...)
next goal: containers (dependency of v4l2-0.1)
rejecting: containers-0.5.7.1/installed-0.5..., containers-0.5.9.1,
containers-0.5.8.1, containers-0.5.7.1, containers-0.5.7.0,
containers-0.5.6.3, containers-0.5.6.2, containers-0.5.6.1,
containers-0.5.6.0, containers-0.5.5.1, containers-0.5.5.0,
containers-0.5.4.0, containers-0.5.3.1, containers-0.5.3.0,
containers-0.5.2.1, containers-0.5.2.0, containers-0.5.1.0, containers-0.5.0.0
(conflict: v4l2 => containers>=0.3 && <0.5)
rejecting: containers-0.4.2.1 (conflict: time =>
deepseq==1.4.2.0/installed-1.4..., containers => deepseq>=1.2 && <1.4)
rejecting: containers-0.4.2.0 (conflict: time =>
deepseq==1.4.2.0/installed-1.4..., containers => deepseq>=1.2 && <1.3)
rejecting: containers-0.4.1.0 (conflict: base==4.9.0.0/installed-4.9...,
containers => base>=4.2 && <4.8)
rejecting: containers-0.4.0.0, containers-0.3.0.0 (conflict:
base==4.9.0.0/installed-4.9..., containers => base>=4.2 && <4.7)
rejecting: containers-0.2.0.1, containers-0.2.0.0, containers-0.1.0.1,
containers-0.1.0.0 (conflict: v4l2 => containers>=0.3 && <0.5)
Dependency tree exhaustively searched.