Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: vty-ui (user goal)
rejecting: vty-ui-1.9, 1.8, 1.7.1, 1.7, 1.6.1, 1.6, 1.5.1, 1.5, 1.4, 1.3.1,
1.3 (global constraint requires ==1.2)
trying: vty-ui-1.2
trying: bytestring-0.10.6.0/installed-236... (dependency of vty-ui-1.2)
next goal: deepseq (dependency of bytestring-0.10.6.0/installed-236...)
rejecting: deepseq-1.4.1.1/installed-8fb... (conflict: deepseq =>
array==0.5.1.0/installed-d42..., vty-ui => array>=0.3 && <0.4)
rejecting: deepseq-1.4.1.2, 1.4.1.1, 1.4.1.0, 1.4.0.0, 1.3.0.2, 1.3.0.1,
1.3.0.0, 1.2.0.1, 1.2.0.0, 1.1.0.2, 1.1.0.1, 1.1.0.0, 1.0.0.0 (conflict:
bytestring => deepseq==1.4.1.1/installed-8fb...)
Dependency tree exhaustively searched.