Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: yaml (user goal)
rejecting: yaml-0.8.15.1, 0.8.14, 0.8.13, 0.8.12, 0.8.11, 0.8.10.1, 0.8.10,
0.8.9.4, 0.8.9.3, 0.8.9.2, 0.8.9.1, 0.8.9, 0.8.8.4, 0.8.8.3, 0.8.8.2, 0.8.8.1,
0.8.8, 0.8.7.2, 0.8.7.1, 0.8.7, 0.8.6.2, 0.8.6.1, 0.8.6, 0.8.5.4, 0.8.5.3,
0.8.5.2, 0.8.5.1, 0.8.5, 0.8.4.1, 0.8.4, 0.8.3, 0.8.2.4, 0.8.2.3, 0.8.2.2,
0.8.2.1, 0.8.2, 0.8.1.2, 0.8.1.1, 0.8.1, 0.8.0.2, 0.8.0.1, 0.8.0, 0.7.0.4,
0.7.0.3, 0.7.0.2, 0.7.0.1, 0.7.0, 0.6.1, 0.6.0, 0.5.2, 0.5.1.2, 0.5.1.1,
0.5.1, 0.5.0.1, 0.5.0, 0.4.1.2, 0.4.1.1, 0.4.1, 0.4.0, 0.3.0, 0.2.1, 0.2.0,
0.0.4, 0.0.3, 0.0.2, 0.0.1 (global constraint requires ==0.0.0)
trying: yaml-0.0.0
trying: base-4.8.1.0/installed-4f7... (dependency of yaml-0.0.0)
next goal: haskell98 (dependency of yaml-0.0.0)
rejecting: haskell98-2.0.0.3 (conflict: base==4.8.1.0/installed-4f7...,
haskell98 => base>=4.7 && <4.8)
rejecting: haskell98-2.0.0.2 (conflict: base==4.8.1.0/installed-4f7...,
haskell98 => base==4.6.*)
trying: haskell98-2.0.0.1
next goal: array (dependency of haskell98-2.0.0.1)
rejecting: array-0.5.1.0/installed-d42..., 0.5.1.0, 0.5.0.0 (conflict:
haskell98 => array>=0.3 && <0.5)
rejecting: array-0.4.0.1 (conflict: base==4.8.1.0/installed-4f7..., array =>
base>=4.2 && <4.7)
rejecting: array-0.4.0.0 (conflict: base==4.8.1.0/installed-4f7..., array =>
base>=4.2 && <4.6)
rejecting: array-0.3.0.3 (conflict: base==4.8.1.0/installed-4f7..., array =>
base>=4.2 && <4.5)
rejecting: array-0.3.0.2, 0.3.0.1 (conflict: base==4.8.1.0/installed-4f7...,
array => base>=4.2 && <4.4)
rejecting: array-0.3.0.0 (conflict: base==4.8.1.0/installed-4f7..., array =>
base>=3 && <4.4)
rejecting: array-0.2.0.0, 0.1.0.0 (conflict: haskell98 => array>=0.3 && <0.5)
Dependency tree exhaustively searched.