Resolving dependencies...
cabal: Could not resolve dependencies:
trying: paragon-0.1.28 (user goal)
trying: base-4.8.1.0/installed-4f7... (dependency of paragon-0.1.28)
next goal: parsec (dependency of paragon-0.1.28)
rejecting: parsec-3.1.9, 3.1.8, 3.1.7, 3.1.6, 3.1.5, 3.1.4, 3.1.3, 3.1.2,
3.1.1, 3.1.0, 3.0.1, 3.0.0 (conflict: paragon => parsec>=2.1 && <3)
rejecting: parsec-2.1.0.1, 2.1.0.0 (conflict: base==4.8.1.0/installed-4f7...,
parsec => base<4.8)
rejecting: parsec-2.0 (conflict: paragon => parsec>=2.1 && <3)
Dependency tree exhaustively searched.