@@ -270,6 +270,7 @@ defaultConfiguration = Configuration
270270 , "primitive < 0.6" -- newer versions break lens and others packages
271271 , "QuickCheck < 2.8" -- 2.8 breaks chell-quickcheck-0.2.4
272272 , "utf8-string < 1" -- version 1 breaks several packages right now, most notably hint
273+ , "zlib < 0.6" -- newer versions break cabal-install
273274 ]
274275
275276 , corePackages = map (\s -> fromMaybe (error (show s ++ " is not a valid core package")) (simpleParse s))