{"action":"opened","issue":{"url":"https://api.github.com/repos/heroku/heroku-buildpack-ruby/issues/421","labels_url":"https://api.github.com/repos/heroku/heroku-buildpack-ruby/issues/421/labels{/name}","comments_url":"https://api.github.com/repos/heroku/heroku-buildpack-ruby/issues/421/comments","events_url":"https://api.github.com/repos/heroku/heroku-buildpack-ruby/issues/421/events","html_url":"https://github.com/heroku/heroku-buildpack-ruby/issues/421","id":107853410,"number":421,"title":"switch ruby bin download URL easily","user":{"login":"khoan","id":45188,"avatar_url":"https://avatars.githubusercontent.com/u/45188?v=3","gravatar_id":"","url":"https://api.github.com/users/khoan","html_url":"https://github.com/khoan","followers_url":"https://api.github.com/users/khoan/followers","following_url":"https://api.github.com/users/khoan/following{/other_user}","gists_url":"https://api.github.com/users/khoan/gists{/gist_id}","starred_url":"https://api.github.com/users/khoan/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/khoan/subscriptions","organizations_url":"https://api.github.com/users/khoan/orgs","repos_url":"https://api.github.com/users/khoan/repos","events_url":"https://api.github.com/users/khoan/events{/privacy}","received_events_url":"https://api.github.com/users/khoan/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2015-09-23T05:39:08Z","updated_at":"2015-09-23T05:39:08Z","closed_at":null,"body":"currently, we need to fork and adjust VENDOR_URL constant to point to jemalloc ruby bin (see https://github.com/heroku/heroku-buildpack-ruby/issues/328)\r\n\r\ncan we instead have a RUBY_URL env to fulfil similar purpose?"}}