{"action":"created","issue":{"url":"https://api.github.com/repos/NixOS/nixpkgs/issues/9482","labels_url":"https://api.github.com/repos/NixOS/nixpkgs/issues/9482/labels{/name}","comments_url":"https://api.github.com/repos/NixOS/nixpkgs/issues/9482/comments","events_url":"https://api.github.com/repos/NixOS/nixpkgs/issues/9482/events","html_url":"https://github.com/NixOS/nixpkgs/issues/9482","id":103559407,"number":9482,"title":"Why does substituteAll substitute only lowercase variables?","user":{"login":"pikajude","id":316117,"avatar_url":"https://avatars.githubusercontent.com/u/316117?v=3","gravatar_id":"","url":"https://api.github.com/users/pikajude","html_url":"https://github.com/pikajude","followers_url":"https://api.github.com/users/pikajude/followers","following_url":"https://api.github.com/users/pikajude/following{/other_user}","gists_url":"https://api.github.com/users/pikajude/gists{/gist_id}","starred_url":"https://api.github.com/users/pikajude/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/pikajude/subscriptions","organizations_url":"https://api.github.com/users/pikajude/orgs","repos_url":"https://api.github.com/users/pikajude/repos","events_url":"https://api.github.com/users/pikajude/events{/privacy}","received_events_url":"https://api.github.com/users/pikajude/received_events","type":"User","site_admin":false},"labels":[],"state":"closed","locked":false,"assignee":null,"milestone":null,"comments":2,"created_at":"2015-08-27T17:41:36Z","updated_at":"2015-08-27T17:56:36Z","closed_at":"2015-08-27T17:56:36Z","body":""},"comment":{"url":"https://api.github.com/repos/NixOS/nixpkgs/issues/comments/135506921","html_url":"https://github.com/NixOS/nixpkgs/issues/9482#issuecomment-135506921","issue_url":"https://api.github.com/repos/NixOS/nixpkgs/issues/9482","id":135506921,"user":{"login":"edolstra","id":1148549,"avatar_url":"https://avatars.githubusercontent.com/u/1148549?v=3","gravatar_id":"","url":"https://api.github.com/users/edolstra","html_url":"https://github.com/edolstra","followers_url":"https://api.github.com/users/edolstra/followers","following_url":"https://api.github.com/users/edolstra/following{/other_user}","gists_url":"https://api.github.com/users/edolstra/gists{/gist_id}","starred_url":"https://api.github.com/users/edolstra/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/edolstra/subscriptions","organizations_url":"https://api.github.com/users/edolstra/orgs","repos_url":"https://api.github.com/users/edolstra/repos","events_url":"https://api.github.com/users/edolstra/events{/privacy}","received_events_url":"https://api.github.com/users/edolstra/received_events","type":"User","site_admin":false},"created_at":"2015-08-27T17:56:36Z","updated_at":"2015-08-27T17:56:36Z","body":"The issue tracker is not really the place for asking questions.\r\n\r\nIn any case, I think it was to prevent accidentally substituting \"regular\" environment variables like `$PATH`, since they almost always start with an uppercase letter. "}}