Resolving dependencies...
cabal: Could not resolve dependencies:
[__0] trying: protocol-buffers-descriptor-2.4.16 (user goal)
[__1] next goal: protocol-buffers (dependency of protocol-buffers-descriptor)
[__1] rejecting: protocol-buffers-2.4.14 (conflict:
protocol-buffers-descriptor => protocol-buffers==2.4.16)
[__1] skipping: protocol-buffers-2.4.13, protocol-buffers-2.4.12,
protocol-buffers-2.4.11, protocol-buffers-2.4.10, protocol-buffers-2.4.9,
protocol-buffers-2.4.8, protocol-buffers-2.4.7, protocol-buffers-2.4.6,
protocol-buffers-2.4.5, protocol-buffers-2.4.4, protocol-buffers-2.4.3,
protocol-buffers-2.4.2, protocol-buffers-2.4.1, 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,
protocol-buffers-0.3.1, 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 (has the same characteristics that caused the previous
version to fail: excluded by constraint '==2.4.16' from
'protocol-buffers-descriptor')
[__1] fail (backjumping, conflict set: protocol-buffers,
protocol-buffers-descriptor)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: protocol-buffers-descriptor,
protocol-buffers