How do you get Cabal to print all available versions of a package? Running cabal -v info package-name prints something like this; in case many versions are available:
Versions available: (0.1.5.5), (0.1.5.6), (0.1.6.3), (0.1.6.4), 0.1.6.5,
0.2.4.2, 0.2.5.0, 0.2.6.0, 0.2.7.0 (and 26 others)