{"action":"closed","issue":{"url":"https://api.github.com/repos/HeinrichApfelmus/reactive-banana/issues/87","labels_url":"https://api.github.com/repos/HeinrichApfelmus/reactive-banana/issues/87/labels{/name}","comments_url":"https://api.github.com/repos/HeinrichApfelmus/reactive-banana/issues/87/comments","events_url":"https://api.github.com/repos/HeinrichApfelmus/reactive-banana/issues/87/events","html_url":"https://github.com/HeinrichApfelmus/reactive-banana/issues/87","id":67798194,"number":87,"title":"Build failure due to PQueue package","user":{"login":"FranklinChen","id":134491,"avatar_url":"https://avatars.githubusercontent.com/u/134491?v=3","gravatar_id":"","url":"https://api.github.com/users/FranklinChen","html_url":"https://github.com/FranklinChen","followers_url":"https://api.github.com/users/FranklinChen/followers","following_url":"https://api.github.com/users/FranklinChen/following{/other_user}","gists_url":"https://api.github.com/users/FranklinChen/gists{/gist_id}","starred_url":"https://api.github.com/users/FranklinChen/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/FranklinChen/subscriptions","organizations_url":"https://api.github.com/users/FranklinChen/orgs","repos_url":"https://api.github.com/users/FranklinChen/repos","events_url":"https://api.github.com/users/FranklinChen/events{/privacy}","received_events_url":"https://api.github.com/users/FranklinChen/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/HeinrichApfelmus/reactive-banana/labels/maintenance","name":"maintenance","color":"339933"}],"state":"closed","locked":false,"assignee":null,"milestone":null,"comments":5,"created_at":"2015-04-11T15:16:34Z","updated_at":"2015-08-26T17:51:56Z","closed_at":"2015-08-26T17:51:56Z","body":"I suggest using https://github.com/hvr/multi-ghc-travis to test building with multiple versions of GHC and Cabal.\r\n\r\nRight now, when I run `cabal install reactive-banana` on GHC 7.10.1, it fails because `pqueue` is failing:\r\n\r\n```console\r\nData/PQueue/Internals.hs:64:19:\r\n    Ambiguous occurrence ‘null’\r\n    It could refer to either ‘Data.PQueue.Internals.null’,\r\n                             defined at Data/PQueue/Internals.hs:161:1\r\n                          or ‘Data.Foldable.null’,\r\n                             imported from ‘Data.Foldable’ at Data/PQueue/Internals.hs:36:23-35\r\ncabal: Error: some packages failed to install:\r\npqueue-1.2.1 failed during the building phase. The exception was:\r\nExitFailure 1\r\nreactive-banana-0.8.1.1 depends on pqueue-1.2.1 which failed to install.\r\n```"}}