Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: pisigma (user goal)
rejecting: pisigma-0.2.1, pisigma-0.2, pisigma-0.1.0.3 (constraint from user
target requires ==0.1.0.2)
trying: pisigma-0.1.0.2
trying: time-1.6.0.1/installed-1.6... (dependency of
unix-2.7.2.0/installed-2.7...)
next goal: deepseq (dependency of time-1.6.0.1/installed-1.6...)
rejecting: deepseq-1.4.2.0/installed-1.4... (conflict: deepseq =>
array==0.5.1.1/installed-0.5..., pisigma => array>=0.2 && <0.3)
rejecting: deepseq-1.4.2.0, deepseq-1.4.1.2, deepseq-1.4.1.1, deepseq-1.4.1.0,
deepseq-1.4.0.0, deepseq-1.3.0.2, deepseq-1.3.0.1, deepseq-1.3.0.0,
deepseq-1.2.0.1, deepseq-1.2.0.0, deepseq-1.1.0.2, deepseq-1.1.0.1,
deepseq-1.1.0.0, deepseq-1.0.0.0 (conflict: time =>
deepseq==1.4.2.0/installed-1.4...)
Dependency tree exhaustively searched.