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,
hprotoc-1.8.2, hprotoc-1.8.1, hprotoc-1.8.0, hprotoc-1.7.9, hprotoc-1.7.1,
hprotoc-1.7.0, hprotoc-1.6.0, hprotoc-1.5.1, hprotoc-1.5.0, hprotoc-1.4.0,
hprotoc-1.2.2, hprotoc-1.2.1, hprotoc-1.0.1, hprotoc-1.0.0 (constraint from
user target requires ==0.3.1)
trying: hprotoc-0.3.1
trying: base-4.9.0.0/installed-4.9... (dependency of hprotoc-0.3.1)
next goal: protocol-buffers (dependency of hprotoc-0.3.1)
rejecting: protocol-buffers-2.4.0, protocol-buffers-2.3.1,
protocol-buffers-2.3.0, protocol-buffers-2.2.0, protocol-buffers-2.1.12,
protocol-buffers-2.1.11, protocol-buffers-2.1.10, protocol-buffers-2.1.9,
protocol-buffers-2.1.8, protocol-buffers-2.1.7, protocol-buffers-2.1.6,
protocol-buffers-2.1.5, protocol-buffers-2.1.4, protocol-buffers-2.1.3,
protocol-buffers-2.1.2, protocol-buffers-2.1.1, protocol-buffers-2.1.0,
protocol-buffers-2.0.17, protocol-buffers-2.0.14, protocol-buffers-2.0.12,
protocol-buffers-2.0.11, protocol-buffers-2.0.10, protocol-buffers-2.0.9,
protocol-buffers-2.0.8, protocol-buffers-2.0.7, protocol-buffers-2.0.6,
protocol-buffers-2.0.5, protocol-buffers-2.0.2, protocol-buffers-2.0.0,
protocol-buffers-1.8.3, protocol-buffers-1.8.2, protocol-buffers-1.8.0,
protocol-buffers-1.7.9, protocol-buffers-1.6.0, protocol-buffers-1.5.0,
protocol-buffers-1.4.0, protocol-buffers-1.2.2, protocol-buffers-1.2.1,
protocol-buffers-1.0.1, protocol-buffers-1.0.0 (conflict: hprotoc =>
protocol-buffers==0.3.1)
rejecting: protocol-buffers-0.3.1 (conflict: base==4.9.0.0/installed-4.9...,
protocol-buffers => base>=3 && <4.3 || <3)
rejecting: protocol-buffers-0.2.9, protocol-buffers-0.2.8,
protocol-buffers-0.1.0, protocol-buffers-0.0.5, protocol-buffers-0.0.2,
protocol-buffers-0.0.1 (conflict: hprotoc => protocol-buffers==0.3.1)
Dependency tree exhaustively searched.