{"action":"created","comment":{"url":"https://api.github.com/repos/snapcore/snapd/pulls/comments/65519988","id":65519988,"diff_hunk":"@@ -460,10 +460,10 @@ func (o *Overlord) InstallWithSideInfo(snapFilePath string, sideInfo *snap.SideI\n \t}\n \n \t// deal with the data\n-\terr = CopyData(newInfo, oldInfo, flags, meter)\n+\terr = copyData(newInfo, oldInfo, flags, meter)","path":"snappy/overlord.go","position":27,"original_position":27,"commit_id":"f61da0b1d3075c9a264b14a52316b418439ebf54","original_commit_id":"f61da0b1d3075c9a264b14a52316b418439ebf54","user":{"login":"pedronis","id":975757,"avatar_url":"https://avatars.githubusercontent.com/u/975757?v=3","gravatar_id":"","url":"https://api.github.com/users/pedronis","html_url":"https://github.com/pedronis","followers_url":"https://api.github.com/users/pedronis/followers","following_url":"https://api.github.com/users/pedronis/following{/other_user}","gists_url":"https://api.github.com/users/pedronis/gists{/gist_id}","starred_url":"https://api.github.com/users/pedronis/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/pedronis/subscriptions","organizations_url":"https://api.github.com/users/pedronis/orgs","repos_url":"https://api.github.com/users/pedronis/repos","events_url":"https://api.github.com/users/pedronis/events{/privacy}","received_events_url":"https://api.github.com/users/pedronis/received_events","type":"User","site_admin":false},"body":"we are close to be able to, but it needs a lot of test surgery in snappy so probably best as its own branch, also not clear it's valuable work if the end result anyway is removing snappy","created_at":"2016-06-02T10:59:08Z","updated_at":"2016-06-02T10:59:08Z","html_url":"https://github.com/snapcore/snapd/pull/1256#discussion_r65519988","pull_request_url":"https://api.github.com/repos/snapcore/snapd/pulls/1256","_links":{"self":{"href":"https://api.github.com/repos/snapcore/snapd/pulls/comments/65519988"},"html":{"href":"https://github.com/snapcore/snapd/pull/1256#discussion_r65519988"},"pull_request":{"href":"https://api.github.com/repos/snapcore/snapd/pulls/1256"}}},"pull_request":{"url":"https://api.github.com/repos/snapcore/snapd/pulls/1256","id":72200790,"html_url":"https://github.com/snapcore/snapd/pull/1256","diff_url":"https://github.com/snapcore/snapd/pull/1256.diff","patch_url":"https://github.com/snapcore/snapd/pull/1256.patch","issue_url":"https://api.github.com/repos/snapcore/snapd/issues/1256","number":1256,"state":"open","locked":false,"title":"overlord/snapstate,snappy: move over CopyData and Remove*Data code","user":{"login":"pedronis","id":975757,"avatar_url":"https://avatars.githubusercontent.com/u/975757?v=3","gravatar_id":"","url":"https://api.github.com/users/pedronis","html_url":"https://github.com/pedronis","followers_url":"https://api.github.com/users/pedronis/followers","following_url":"https://api.github.com/users/pedronis/following{/other_user}","gists_url":"https://api.github.com/users/pedronis/gists{/gist_id}","starred_url":"https://api.github.com/users/pedronis/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/pedronis/subscriptions","organizations_url":"https://api.github.com/users/pedronis/orgs","repos_url":"https://api.github.com/users/pedronis/repos","events_url":"https://api.github.com/users/pedronis/events{/privacy}","received_events_url":"https://api.github.com/users/pedronis/received_events","type":"User","site_admin":false},"body":"This moves over another chunk of logic from snappy to overlord/snapstate/backend namely the CopyData and Remove*Data methods, with some signature changes,\r\n\r\nThe tests in copydata_test.go are slightly cleaned up variants of the tests in undo_test.go and CopyData tests, in addition now first install logic (no previous snap revision) is explicitly tested together with robustness in terms of do/undo and idempotence in the face of retries.\r\n\r\nThe only actual logic change is about removing the just created common data dir if we are undoing a first install CopyData. 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