Resolving dependencies...
Error: cabal: Could not resolve dependencies:
[__0] trying: raytrace-0.1.0.0 (user goal)
[__1] trying: random-1.3.1 (dependency of raytrace)
[__2] trying: transformers-0.6.1.0/installed-inplace (dependency of random)
[__3] next goal: mtl (dependency of raytrace)
[__3] rejecting: mtl-2.3.1/installed-inplace (conflict: raytrace => mtl>=2.2.2
&& <2.3)
[__3] skipping: mtl-2.3.1 (has the same characteristics that caused the
previous version to fail: excluded by constraint '>=2.2.2 && <2.3' from
'raytrace')
[__3] rejecting: mtl-2.2.2 (conflict: transformers==0.6.1.0/installed-inplace,
mtl => transformers>=0.4 && <0.6)
[__3] skipping: mtl-2.2.1, mtl-2.2.0.1, mtl-2.2, mtl-2.1.3.1, mtl-2.1.2,
mtl-2.1.1, mtl-2.0.1.1, mtl-2.0.1.0, mtl-2.0.0.0 (has the same characteristics
that caused the previous version to fail: excludes 'transformers' version
0.6.1.0)
[__3] rejecting: mtl-1.1.1.1 (conflict: raytrace => mtl>=2.2.2 && <2.3)
[__3] skipping: mtl-1.1.1.0, mtl-1.1.0.2, mtl-1.1.0.1, mtl-1.1.0.0, mtl-1.0,
mtl-2.3, mtl-2.1 (has the same characteristics that caused the previous
version to fail: excluded by constraint '>=2.2.2 && <2.3' from 'raytrace')
[__3] fail (backjumping, conflict set: mtl, raytrace, transformers)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: linear, raytrace, base, semigroupoids,
transformers, mtl, random
Try running with --minimize-conflict-set to improve the error message.