{"action":"created","comment":{"url":"https://api.github.com/repos/pcapriotti/optparse-applicative/pulls/comments/73802024","id":73802024,"diff_hunk":"@@ -14,6 +15,11 @@ module Options.Applicative (\n   -- | The standard @Applicative@ module is re-exported here for convenience.\n   module Control.Applicative,\n \n+  -- | Re-export Data.Monoid's (<>) operator for convenience.","path":"Options/Applicative.hs","position":9,"original_position":9,"commit_id":"50001cf2e8e3871e6d2cc4806c19d5b63c010707","original_commit_id":"50001cf2e8e3871e6d2cc4806c19d5b63c010707","user":{"login":"hvr","id":285533,"avatar_url":"https://avatars.githubusercontent.com/u/285533?v=3","gravatar_id":"","url":"https://api.github.com/users/hvr","html_url":"https://github.com/hvr","followers_url":"https://api.github.com/users/hvr/followers","following_url":"https://api.github.com/users/hvr/following{/other_user}","gists_url":"https://api.github.com/users/hvr/gists{/gist_id}","starred_url":"https://api.github.com/users/hvr/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/hvr/subscriptions","organizations_url":"https://api.github.com/users/hvr/orgs","repos_url":"https://api.github.com/users/hvr/repos","events_url":"https://api.github.com/users/hvr/events{/privacy}","received_events_url":"https://api.github.com/users/hvr/received_events","type":"User","site_admin":false},"body":"This is a bit evil as then optparse-applicative's exposed API depends on its transitive dependencies configuration. I.e., if you happen to use `base-4.5` or later (even if you don't declare direct dependency on `base`) you get `(<>)` in scope, if use anything else, importing `Options.Applicative` does not provide `((<>))`. \r\n\r\nSo this is nasty API-variability which causes us Hackage Trustees quite some headaches, as we'd need to add constraints that are way beyond the kind of things we can edit into `.cabal` files retroactively.\r\n\r\nI'd strongly advise against this. If you want to export conditionally, better drop support for base < 4.5 and thereby avoid the conditional  export altogether :-)\r\n\r\n(or you could provide a local `<>` definition for when `base` doesn't provide it; this runs the risk of potential clashes with other local `<>` definitions but it's the lesser evil IMO)","created_at":"2016-08-07T13:35:57Z","updated_at":"2016-08-07T13:35:57Z","html_url":"https://github.com/pcapriotti/optparse-applicative/pull/216#discussion_r73802024","pull_request_url":"https://api.github.com/repos/pcapriotti/optparse-applicative/pulls/216","_links":{"self":{"href":"https://api.github.com/repos/pcapriotti/optparse-applicative/pulls/comments/73802024"},"html":{"href":"https://github.com/pcapriotti/optparse-applicative/pull/216#discussion_r73802024"},"pull_request":{"href":"https://api.github.com/repos/pcapriotti/optparse-applicative/pulls/216"}}},"pull_request":{"url":"https://api.github.com/repos/pcapriotti/optparse-applicative/pulls/216","id":79501823,"html_url":"https://github.com/pcapriotti/optparse-applicative/pull/216","diff_url":"https://github.com/pcapriotti/optparse-applicative/pull/216.diff","patch_url":"https://github.com/pcapriotti/optparse-applicative/pull/216.patch","issue_url":"https://api.github.com/repos/pcapriotti/optparse-applicative/issues/216","number":216,"state":"open","locked":false,"title":"Semigroup","user":{"login":"HuwCampbell","id":5205457,"avatar_url":"https://avatars.githubusercontent.com/u/5205457?v=3","gravatar_id":"","url":"https://api.github.com/users/HuwCampbell","html_url":"https://github.com/HuwCampbell","followers_url":"https://api.github.com/users/HuwCampbell/followers","following_url":"https://api.github.com/users/HuwCampbell/following{/other_user}","gists_url":"https://api.github.com/users/HuwCampbell/gists{/gist_id}","starred_url":"https://api.github.com/users/HuwCampbell/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/HuwCampbell/subscriptions","organizations_url":"https://api.github.com/users/HuwCampbell/orgs","repos_url":"https://api.github.com/users/HuwCampbell/repos","events_url":"https://api.github.com/users/HuwCampbell/events{/privacy}","received_events_url":"https://api.github.com/users/HuwCampbell/received_events","type":"User","site_admin":false},"body":"On top of #213 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