{"action":"created","issue":{"url":"https://api.github.com/repos/nick8325/quickcheck/issues/42","labels_url":"https://api.github.com/repos/nick8325/quickcheck/issues/42/labels{/name}","comments_url":"https://api.github.com/repos/nick8325/quickcheck/issues/42/comments","events_url":"https://api.github.com/repos/nick8325/quickcheck/issues/42/events","html_url":"https://github.com/nick8325/quickcheck/issues/42","id":53864925,"number":42,"title":"Issue using quickCheckAll and GHC 7.10.1 RC1","user":{"login":"asr","id":635804,"avatar_url":"https://avatars.githubusercontent.com/u/635804?v=3","gravatar_id":"","url":"https://api.github.com/users/asr","html_url":"https://github.com/asr","followers_url":"https://api.github.com/users/asr/followers","following_url":"https://api.github.com/users/asr/following{/other_user}","gists_url":"https://api.github.com/users/asr/gists{/gist_id}","starred_url":"https://api.github.com/users/asr/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/asr/subscriptions","organizations_url":"https://api.github.com/users/asr/orgs","repos_url":"https://api.github.com/users/asr/repos","events_url":"https://api.github.com/users/asr/events{/privacy}","received_events_url":"https://api.github.com/users/asr/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":1,"created_at":"2015-01-09T12:54:10Z","updated_at":"2015-01-10T14:44:04Z","closed_at":null,"body":"I found this issue while preparing Agda for supporting GHC 7.10.1. The following example compiles with GHC 7.8.4:\r\n\r\n````haskell\r\n{-# LANGUAGE TemplateHaskell #-}\r\n\r\nimport Test.QuickCheck\r\n\r\nprop_id :: Eq a => a -> Bool\r\nprop_id x = x == x\r\n\r\nreturn []\r\n\r\nmain :: IO Bool\r\nmain = $quickCheckAll\r\n````\r\n\r\nUsing GHC 7.10.1 RC 1, I got the following error:\r\n\r\n````bash\r\n$ ghc Test.hs\r\nTest.hs:12:8:\r\n    Exception when trying to run compile-time code:\r\n      Higher-kinded type variables in type: forall (a_0 :: *) . GHC.Classes.Eq a_0 => a_0 -> GHC.Types.Bool\r\n    Code: quickCheckAll\r\n    In the splice: $quickCheckAll\r\n````"},"comment":{"url":"https://api.github.com/repos/nick8325/quickcheck/issues/comments/69458107","html_url":"https://github.com/nick8325/quickcheck/issues/42#issuecomment-69458107","issue_url":"https://api.github.com/repos/nick8325/quickcheck/issues/42","id":69458107,"user":{"login":"asr","id":635804,"avatar_url":"https://avatars.githubusercontent.com/u/635804?v=3","gravatar_id":"","url":"https://api.github.com/users/asr","html_url":"https://github.com/asr","followers_url":"https://api.github.com/users/asr/followers","following_url":"https://api.github.com/users/asr/following{/other_user}","gists_url":"https://api.github.com/users/asr/gists{/gist_id}","starred_url":"https://api.github.com/users/asr/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/asr/subscriptions","organizations_url":"https://api.github.com/users/asr/orgs","repos_url":"https://api.github.com/users/asr/repos","events_url":"https://api.github.com/users/asr/events{/privacy}","received_events_url":"https://api.github.com/users/asr/received_events","type":"User","site_admin":false},"created_at":"2015-01-10T14:44:04Z","updated_at":"2015-01-10T14:44:04Z","body":"FYI, I just asked about this issue in Stack Overflow (see http://stackoverflow.com/questions/27877390/issue-using-quickcheckall-and-ghc-7-10-1-rc1)."}}