Resolving dependencies...
cabal: Could not resolve dependencies:
trying: ideas-math-1.2 (user goal)
trying: base-4.8.1.0/installed-4f7... (dependency of ideas-math-1.2)
next goal: ideas (dependency of ideas-math-1.2)
rejecting: ideas-1.4, 1.3.1 (conflict: ideas-math => ideas==1.3)
trying: ideas-1.3
trying: exceptions-0.8.0.2 (dependency of ideas-1.3)
trying: transformers-0.4.2.0/installed-21d... (dependency of
exceptions-0.8.0.2)
next goal: mtl (dependency of ideas-1.3)
rejecting: mtl-2.2.1, 2.2.0.1, 2.2 (conflict: ideas => mtl==2.1.*)
rejecting: mtl-2.1.3.1, 2.1.2 (conflict:
transformers==0.4.2.0/installed-21d..., mtl => transformers==0.3.*)
rejecting: mtl-2.1.1, 2.1 (conflict: base==4.8.1.0/installed-4f7..., mtl =>
base<4.6)
rejecting: mtl-2.0.1.1, 2.0.1.0, 2.0.0.0, 1.1.1.1, 1.1.1.0, 1.1.0.2, 1.1.0.1,
1.1.0.0, 1.0 (conflict: ideas => mtl==2.1.*)
Dependency tree exhaustively searched.