cabal: cannot configure tagsoup-0.8. It requires QuickCheck ==2.1.* For the dependency on QuickCheck ==2.1.* there are these packages: QuickCheck-2.1, QuickCheck-2.1.0.1, QuickCheck-2.1.0.2 and QuickCheck-2.1.0.3. However none of them are available. QuickCheck-2.1 was excluded because bio-0.4 requires QuickCheck <2 QuickCheck-2.1.0.1 was excluded because bio-0.4 requires QuickCheck <2 QuickCheck-2.1.0.2 was excluded because bio-0.4 requires QuickCheck <2 QuickCheck-2.1.0.3 was excluded because bio-0.4 requires QuickCheck <2