Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: language-python (user goal)
rejecting: language-python-0.5.2, 0.5.0, 0.4.1, 0.4.0, 0.3.4, 0.3.3, 0.3.2,
0.3.1 (global constraint requires ==0.3.0)
trying: language-python-0.3.0
trying: base-4.8.1.0/installed-4f7... (dependency of language-python-0.3.0)
next goal: array (dependency of language-python-0.3.0)
rejecting: array-0.5.1.0/installed-d42..., 0.5.1.0, 0.5.0.0, 0.4.0.1, 0.4.0.0,
0.3.0.3, 0.3.0.2, 0.3.0.1, 0.3.0.0 (conflict: language-python => array==0.2.*)
rejecting: array-0.2.0.0 (conflict: base==4.8.1.0/installed-4f7..., array =>
base<4.3)
rejecting: array-0.1.0.0 (conflict: language-python => array==0.2.*)
Dependency tree exhaustively searched.