Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: gruff (user goal)
rejecting: gruff-0.3.4, 0.3.3, 0.3.1, 0.3 (global constraint requires ==0.2.1)
trying: gruff-0.2.1
trying: bytestring-0.10.6.0/installed-236... (dependency of gruff-0.2.1)
trying: deepseq-1.4.1.1/installed-8fb... (dependency of
bytestring-0.10.6.0/installed-236...)
next goal: ruff (dependency of gruff-0.2.1)
rejecting: ruff-0.4, 0.3.2.1, 0.3.2, 0.3 (conflict: gruff => ruff>=0.2 &&
<0.3)
rejecting: ruff-0.2 (conflict: deepseq => array==0.5.1.0/installed-d42...,
ruff => array>=0.3 && <0.4)
rejecting: ruff-0.1 (conflict: gruff => ruff>=0.2 && <0.3)
Dependency tree exhaustively searched.