Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: dtd-text (user goal)
rejecting: dtd-text-0.1.2.0, dtd-text-0.1.1.2, dtd-text-0.1.1.1 (constraint
from user target requires ==0.1.1.0)
trying: dtd-text-0.1.1.0
trying: deepseq-1.4.2.0/installed-1.4... (dependency of
bytestring-0.10.8.1/installed-0.1...)
next goal: attoparsec-text (dependency of dtd-text-0.1.1.0)
rejecting: attoparsec-text-0.8.5.3, attoparsec-text-0.8.5.2,
attoparsec-text-0.8.5.1, attoparsec-text-0.8.5.0, attoparsec-text-0.8.2.1,
attoparsec-text-0.8.2.0, attoparsec-text-0.8.0.0 (conflict: deepseq =>
array==0.5.1.1/installed-0.5..., attoparsec-text => array>=0.1 && <0.4)
Dependency tree exhaustively searched.