Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: hprotoc (user goal)
rejecting: hprotoc-2.1.7, 2.1.6, 2.1.5, 2.1.4, 2.1.3, 2.1.2, 2.1.0, 2.0.17,
2.0.15, 2.0.14, 2.0.13, 2.0.12, 2.0.11, 2.0.10, 2.0.9, 2.0.7, 2.0.6, 2.0.5,
2.0.2, 2.0.0, 1.8.3, 1.8.2, 1.8.1, 1.8.0, 1.7.9, 1.7.1 (global constraint
requires ==1.7.0)
trying: hprotoc-1.7.0
trying: base-4.8.1.0/installed-4f7... (dependency of hprotoc-1.7.0)
next goal: directory (dependency of hprotoc-1.7.0)
rejecting: directory-1.2.2.0/installed-258..., 1.2.4.0, 1.2.3.1, 1.2.3.0,
1.2.2.1, 1.2.2.0, 1.2.1.0, 1.2.0.1, 1.2.0.0, 1.1.0.2, 1.1.0.1, 1.1.0.0,
1.0.1.2, 1.0.1.1, 1.0.1.0 (conflict: hprotoc => directory>=1.0.0.1 &&
<=1.0.0.3)
rejecting: directory-1.0.0.3 (conflict: base==4.8.1.0/installed-4f7...,
directory => base<4.3)
rejecting: directory-1.0.0.0 (conflict: hprotoc => directory>=1.0.0.1 &&
<=1.0.0.3)
Dependency tree exhaustively searched.