{"action":"opened","issue":{"url":"https://api.github.com/repos/NixOS/nixpkgs/issues/31674","repository_url":"https://api.github.com/repos/NixOS/nixpkgs","labels_url":"https://api.github.com/repos/NixOS/nixpkgs/issues/31674/labels{/name}","comments_url":"https://api.github.com/repos/NixOS/nixpkgs/issues/31674/comments","events_url":"https://api.github.com/repos/NixOS/nixpkgs/issues/31674/events","html_url":"https://github.com/NixOS/nixpkgs/issues/31674","id":273969985,"number":31674,"title":"In a nix-shell, ghc should ignore user-installed packages that conflict with nix-installed packages","user":{"login":"shlevy","id":487050,"avatar_url":"https://avatars3.githubusercontent.com/u/487050?v=4","gravatar_id":"","url":"https://api.github.com/users/shlevy","html_url":"https://github.com/shlevy","followers_url":"https://api.github.com/users/shlevy/followers","following_url":"https://api.github.com/users/shlevy/following{/other_user}","gists_url":"https://api.github.com/users/shlevy/gists{/gist_id}","starred_url":"https://api.github.com/users/shlevy/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/shlevy/subscriptions","organizations_url":"https://api.github.com/users/shlevy/orgs","repos_url":"https://api.github.com/users/shlevy/repos","events_url":"https://api.github.com/users/shlevy/events{/privacy}","received_events_url":"https://api.github.com/users/shlevy/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":0,"created_at":"2017-11-14T22:42:00Z","updated_at":"2017-11-14T22:42:00Z","closed_at":null,"author_association":"MEMBER","body":"We've hit a case where a user with packages in their user package db (managed by brew-installed ghc) caused a \"shadowed dependencies\" error in the nix-shell, even with --pure. This went away when ~/.ghc was moved to ~/.ghc-backup.\r\n\r\ncc @peti "}}
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