Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: diagrams-postscript (user goal)
rejecting: diagrams-postscript-1.3.0.4, 1.3.0.3, 1.3.0.2, 1.3.0.1, 1.3.0.0,
1.1.0.5, 1.1.0.4, 1.1.0.3, 1.1.0.2, 1.1.0.1, 1.1, 1.0.2.4, 1.0.2.3, 1.0.2.2,
1.0.2.1, 1.0.2, 1.0.1.2, 1.0.1.1, 1.0.1, 1.0.0.2, 1.0.0.1, 1.0, 0.7.0.2,
0.7.0.1, 0.7, 0.6.0.1 (global constraint requires ==0.6)
trying: diagrams-postscript-0.6
next goal: base (dependency of diagrams-postscript-0.6)
rejecting: base-4.8.1.0/installed-4f7... (conflict: diagrams-postscript =>
base>=4.2 && <4.7)
rejecting: base-4.8.1.0, 4.8.0.0, 4.7.0.2, 4.7.0.1, 4.7.0.0, 4.6.0.1, 4.6.0.0,
4.5.1.0, 4.5.0.0, 4.4.1.0, 4.4.0.0, 4.3.1.0, 4.3.0.0, 4.2.0.2, 4.2.0.1,
4.2.0.0, 4.1.0.0, 4.0.0.0, 3.0.3.2, 3.0.3.1 (global constraint requires
installed instance)
Dependency tree exhaustively searched.