Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: hprotoc (user goal)
rejecting: hprotoc-2.4.0, hprotoc-2.3.1, hprotoc-2.3.0, hprotoc-2.2.0,
hprotoc-2.1.12, hprotoc-2.1.11, hprotoc-2.1.9, hprotoc-2.1.8, hprotoc-2.1.7,
hprotoc-2.1.6, hprotoc-2.1.5, hprotoc-2.1.4, hprotoc-2.1.3, hprotoc-2.1.2,
hprotoc-2.1.0, hprotoc-2.0.17, hprotoc-2.0.15, hprotoc-2.0.14, hprotoc-2.0.13,
hprotoc-2.0.12, hprotoc-2.0.11, hprotoc-2.0.10, hprotoc-2.0.9, hprotoc-2.0.7,
hprotoc-2.0.6, hprotoc-2.0.5, hprotoc-2.0.2, hprotoc-2.0.0, hprotoc-1.8.3
(constraint from user target requires ==1.8.2)
trying: hprotoc-1.8.2
trying: base-4.9.0.0/installed-4.9... (dependency of hprotoc-1.8.2)
next goal: parsec (dependency of hprotoc-1.8.2)
rejecting: parsec-3.1.11, parsec-3.1.10, parsec-3.1.9, parsec-3.1.8,
parsec-3.1.7, parsec-3.1.6, parsec-3.1.5, parsec-3.1.4, parsec-3.1.3,
parsec-3.1.2, parsec-3.1.1, parsec-3.1.0, parsec-3.0.1, parsec-3.0.0
(conflict: hprotoc => parsec<3)
rejecting: parsec-2.1.0.1, parsec-2.1.0.0, parsec-2.0 (conflict:
base==4.9.0.0/installed-4.9..., parsec => base<4.8)
Dependency tree exhaustively searched.