{"action":"closed","issue":{"url":"https://api.github.com/repos/NixOS/nixpkgs/issues/11261","repository_url":"https://api.github.com/repos/NixOS/nixpkgs","labels_url":"https://api.github.com/repos/NixOS/nixpkgs/issues/11261/labels{/name}","comments_url":"https://api.github.com/repos/NixOS/nixpkgs/issues/11261/comments","events_url":"https://api.github.com/repos/NixOS/nixpkgs/issues/11261/events","html_url":"https://github.com/NixOS/nixpkgs/issues/11261","id":118847030,"number":11261,"title":"collisions with (python?) buildEnv","user":{"login":"aragnon","id":423248,"avatar_url":"https://avatars.githubusercontent.com/u/423248?v=3","gravatar_id":"","url":"https://api.github.com/users/aragnon","html_url":"https://github.com/aragnon","followers_url":"https://api.github.com/users/aragnon/followers","following_url":"https://api.github.com/users/aragnon/following{/other_user}","gists_url":"https://api.github.com/users/aragnon/gists{/gist_id}","starred_url":"https://api.github.com/users/aragnon/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/aragnon/subscriptions","organizations_url":"https://api.github.com/users/aragnon/orgs","repos_url":"https://api.github.com/users/aragnon/repos","events_url":"https://api.github.com/users/aragnon/events{/privacy}","received_events_url":"https://api.github.com/users/aragnon/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/NixOS/nixpkgs/labels/0.kind:%20question","name":"0.kind: question","color":"84b6eb"},{"url":"https://api.github.com/repos/NixOS/nixpkgs/labels/6.topic:%20python","name":"6.topic: python","color":"fef2c0"}],"state":"closed","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":17,"created_at":"2015-11-25T14:27:05Z","updated_at":"2016-08-02T10:10:40Z","closed_at":"2016-08-02T10:10:39Z","body":"I get this when I run nix-build in a directory containing a default.nix expression not in nixpkgs currently. The manual speaks of a \"user environment\", but AFAIK. there is no user environment when running nix-build. There might be such an environment when actually installing something via `nix-env -i`. In short, I have no idea what exactly this means. \r\n\r\n \r\n```\r\nthese derivations will be built:\r\n  /nix/store/gsnxjynihklp6ca3k81y7kzidg0cy65z-python-2.7.10-env.drv\r\n  /nix/store/k5ixli4h42lhnny57nrhn1ca25ww9js3-python27.drv\r\n  /nix/store/8cjrx7b5j7gz5a13sp6i76ahn1dn748s-builder.sh.drv\r\n  /nix/store/jnn0qr8gfi9hhmk4lcq8s5qk3b748afa-jupyter.drv\r\n  /nix/store/9jyvbs5ncmv5lflbbv03kradgi0m6s4p-jupyter.drv\r\n  /nix/store/b5mrz3q8fh7jmr5y54srcaygq28mmi4l-jupyter.drv\r\nbuilding path(s) nix/store/4zazcawhfnhzbi8fq6las0vv5k4j5spm-python-2.7.10-env\r\n                                                                             collision between `/nix/store/gi3dbk179bwyyz359ifaclmxnmm50ks3-python2.7-requests-2.8.1/lib/python2.7/site-packages/requests/utils.py' and `/nix/store/9iihqwn84ard78aaj4hwp8rcqpbplv1s-python2.7-requests-1.2.3/lib/python2.7/site-packages/requests/utils.py'\r\nbuilder for nix/store/gsnxjynihklp6ca3k81y7kzidg0cy65z-python-2.7.10-env.drvfailed with exit code 2\r\ncannot build derivation nix/store/k5ixli4h42lhnny57nrhn1ca25ww9js3-python27.drv 1 dependencies couldn't be built\r\ncannot build derivation nix/store/jnn0qr8gfi9hhmk4lcq8s5qk3b748afa-jupyter.drv 1 dependencies couldn't be built\r\ncannot build derivation nix/store/b5mrz3q8fh7jmr5y54srcaygq28mmi4l-jupyter.drv 1 dependencies couldn't be built\r\nerror: build of nix/store/b5mrz3q8fh7jmr5y54srcaygq28mmi4l-jupyter.drvfailed\r\n\r\n```"}}
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