Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: protocol-buffers-descriptor (user goal)
rejecting: protocol-buffers-descriptor-2.1.7, 2.1.6, 2.1.5, 2.1.4, 2.1.3,
2.1.2, 2.1.0, 2.0.17, 2.0.14, 2.0.12, 2.0.11, 2.0.10, 2.0.9, 2.0.8, 2.0.7
(global constraint requires ==2.0.6)
trying: protocol-buffers-descriptor-2.0.6
trying: base-4.8.1.0/installed-4f7... (dependency of
protocol-buffers-descriptor-2.0.6)
next goal: protocol-buffers (dependency of protocol-buffers-descriptor-2.0.6)
rejecting: protocol-buffers-2.1.7, 2.1.6, 2.1.5, 2.1.4, 2.1.3, 2.1.2, 2.1.1,
2.1.0, 2.0.17, 2.0.14, 2.0.12, 2.0.11, 2.0.10, 2.0.9, 2.0.8, 2.0.7 (conflict:
protocol-buffers-descriptor => protocol-buffers==2.0.6)
trying: protocol-buffers-2.0.6
rejecting: protocol-buffers-2.0.6:+small_base (conflict:
base==4.8.1.0/installed-4f7..., protocol-buffers-2.0.6:small_base => base>=4
&& <4.4)
rejecting: protocol-buffers-2.0.6:-small_base (conflict:
base==4.8.1.0/installed-4f7..., protocol-buffers-2.0.6:small_base =>
base==3.*)
Dependency tree exhaustively searched.