Resolving dependencies...
cabal: Could not resolve dependencies:
trying: hurdle-0.4.0 (user goal)
trying: bytestring-0.10.8.1/installed-0.1... (dependency of hurdle-0.4.0)
next goal: deepseq (dependency of bytestring-0.10.8.1/installed-0.1...)
rejecting: deepseq-1.4.2.0/installed-1.4... (conflict: deepseq =>
array==0.5.1.1/installed-0.5..., hurdle => array>=0.2.0.0 && <0.4)
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: bytestring =>
deepseq==1.4.2.0/installed-1.4...)
Dependency tree exhaustively searched.