{"action":"created","issue":{"url":"https://api.github.com/repos/pypa/pip/issues/3423","labels_url":"https://api.github.com/repos/pypa/pip/issues/3423/labels{/name}","comments_url":"https://api.github.com/repos/pypa/pip/issues/3423/comments","events_url":"https://api.github.com/repos/pypa/pip/issues/3423/events","html_url":"https://github.com/pypa/pip/issues/3423","id":128600293,"number":3423,"title":"Hash support is not marked as backwards-incompatible","user":{"login":"Osmose","id":193106,"avatar_url":"https://avatars.githubusercontent.com/u/193106?v=3","gravatar_id":"","url":"https://api.github.com/users/Osmose","html_url":"https://github.com/Osmose","followers_url":"https://api.github.com/users/Osmose/followers","following_url":"https://api.github.com/users/Osmose/following{/other_user}","gists_url":"https://api.github.com/users/Osmose/gists{/gist_id}","starred_url":"https://api.github.com/users/Osmose/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/Osmose/subscriptions","organizations_url":"https://api.github.com/users/Osmose/orgs","repos_url":"https://api.github.com/users/Osmose/repos","events_url":"https://api.github.com/users/Osmose/events{/privacy}","received_events_url":"https://api.github.com/users/Osmose/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":1,"created_at":"2016-01-25T18:01:28Z","updated_at":"2016-01-25T18:08:29Z","closed_at":null,"body":"Howdy! I was reading through the changelog to find info about the new hashing support, and noticed that it's not marked as a backwards-incompatible change. However, requirements files using hashes are no backwards-compatible. Before I had realized that, I had thought that it was based on the lack of a label on it in the changelog.\r\n\r\nIt's a weird change because it's a new flag rather than an existing flag that's changing or anything, but I think it'd be nice to either mark it as backwards-incompatible or to give it some other label indicating that using the new feature will break compatibility with older pip versions.\r\n\r\nThoughts? I'd be happy to submit a PR if there's agreement to mark it as such. :D"},"comment":{"url":"https://api.github.com/repos/pypa/pip/issues/comments/174606294","html_url":"https://github.com/pypa/pip/issues/3423#issuecomment-174606294","issue_url":"https://api.github.com/repos/pypa/pip/issues/3423","id":174606294,"user":{"login":"dstufft","id":145979,"avatar_url":"https://avatars.githubusercontent.com/u/145979?v=3","gravatar_id":"","url":"https://api.github.com/users/dstufft","html_url":"https://github.com/dstufft","followers_url":"https://api.github.com/users/dstufft/followers","following_url":"https://api.github.com/users/dstufft/following{/other_user}","gists_url":"https://api.github.com/users/dstufft/gists{/gist_id}","starred_url":"https://api.github.com/users/dstufft/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/dstufft/subscriptions","organizations_url":"https://api.github.com/users/dstufft/orgs","repos_url":"https://api.github.com/users/dstufft/repos","events_url":"https://api.github.com/users/dstufft/events{/privacy}","received_events_url":"https://api.github.com/users/dstufft/received_events","type":"User","site_admin":false},"created_at":"2016-01-25T18:08:29Z","updated_at":"2016-01-25T18:08:29Z","body":"It's not a backwards incompatible change, backwards compatible is when a new version maintains compatibility with an older version. What you're thinking of is what is called forwards compatibility, when an old version accepts input intended for a newer version. With pip we don't attempt to maintain forwards compatibility and we don't document anything about it."}}