{"action":"created","issue":{"url":"https://api.github.com/repos/NixOS/nixpkgs/issues/43224","repository_url":"https://api.github.com/repos/NixOS/nixpkgs","labels_url":"https://api.github.com/repos/NixOS/nixpkgs/issues/43224/labels{/name}","comments_url":"https://api.github.com/repos/NixOS/nixpkgs/issues/43224/comments","events_url":"https://api.github.com/repos/NixOS/nixpkgs/issues/43224/events","html_url":"https://github.com/NixOS/nixpkgs/pull/43224","id":339237023,"node_id":"MDExOlB1bGxSZXF1ZXN0MTk5OTQ4NzQ0","number":43224,"title":"substitute(): --subst-var was silently coercing to \"\" if the variable does not exist.","user":{"login":"volth","id":508305,"node_id":"MDQ6VXNlcjUwODMwNQ==","avatar_url":"https://avatars3.githubusercontent.com/u/508305?v=4","gravatar_id":"","url":"https://api.github.com/users/volth","html_url":"https://github.com/volth","followers_url":"https://api.github.com/users/volth/followers","following_url":"https://api.github.com/users/volth/following{/other_user}","gists_url":"https://api.github.com/users/volth/gists{/gist_id}","starred_url":"https://api.github.com/users/volth/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/volth/subscriptions","organizations_url":"https://api.github.com/users/volth/orgs","repos_url":"https://api.github.com/users/volth/repos","events_url":"https://api.github.com/users/volth/events{/privacy}","received_events_url":"https://api.github.com/users/volth/received_events","type":"User","site_admin":false},"labels":[{"id":737692408,"node_id":"MDU6TGFiZWw3Mzc2OTI0MDg=","url":"https://api.github.com/repos/NixOS/nixpkgs/labels/10.rebuild-darwin-stdenv","name":"10.rebuild-darwin-stdenv","color":"b60205","default":false},{"id":731735740,"node_id":"MDU6TGFiZWw3MzE3MzU3NDA=","url":"https://api.github.com/repos/NixOS/nixpkgs/labels/10.rebuild-darwin:%20501+","name":"10.rebuild-darwin: 501+","color":"b60205","default":false},{"id":737692313,"node_id":"MDU6TGFiZWw3Mzc2OTIzMTM=","url":"https://api.github.com/repos/NixOS/nixpkgs/labels/10.rebuild-linux-stdenv","name":"10.rebuild-linux-stdenv","color":"b60205","default":false},{"id":731734523,"node_id":"MDU6TGFiZWw3MzE3MzQ1MjM=","url":"https://api.github.com/repos/NixOS/nixpkgs/labels/10.rebuild-linux:%20501+","name":"10.rebuild-linux: 501+","color":"b60205","default":false},{"id":897230915,"node_id":"MDU6TGFiZWw4OTcyMzA5MTU=","url":"https://api.github.com/repos/NixOS/nixpkgs/labels/6.topic:%20stdenv","name":"6.topic: stdenv","color":"fef2c0","default":false}],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":0,"created_at":"2018-07-08T16:03:33Z","updated_at":"2018-07-08T16:33:06Z","closed_at":null,"author_association":"CONTRIBUTOR","pull_request":{"url":"https://api.github.com/repos/NixOS/nixpkgs/pulls/43224","html_url":"https://github.com/NixOS/nixpkgs/pull/43224","diff_url":"https://github.com/NixOS/nixpkgs/pull/43224.diff","patch_url":"https://github.com/NixOS/nixpkgs/pull/43224.patch"},"body":"###### Motivation for this change\r\n\r\nFrom @Profpatsch's [comment](https://github.com/NixOS/nixpkgs/pull/35304#issuecomment-367723420): \r\n> It looks to me like there’s other funny business going on, like --subst-var silently coercing to \"\" if the variable does not exist.\r\n\r\nAs that PR is abandoned, this small feature needs its own PR\r\n\r\n"},"comment":{"url":"https://api.github.com/repos/NixOS/nixpkgs/issues/comments/403299570","html_url":"https://github.com/NixOS/nixpkgs/pull/43224#issuecomment-403299570","issue_url":"https://api.github.com/repos/NixOS/nixpkgs/issues/43224","id":403299570,"node_id":"MDEyOklzc3VlQ29tbWVudDQwMzI5OTU3MA==","user":{"login":"volth","id":508305,"node_id":"MDQ6VXNlcjUwODMwNQ==","avatar_url":"https://avatars3.githubusercontent.com/u/508305?v=4","gravatar_id":"","url":"https://api.github.com/users/volth","html_url":"https://github.com/volth","followers_url":"https://api.github.com/users/volth/followers","following_url":"https://api.github.com/users/volth/following{/other_user}","gists_url":"https://api.github.com/users/volth/gists{/gist_id}","starred_url":"https://api.github.com/users/volth/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/volth/subscriptions","organizations_url":"https://api.github.com/users/volth/orgs","repos_url":"https://api.github.com/users/volth/repos","events_url":"https://api.github.com/users/volth/events{/privacy}","received_events_url":"https://api.github.com/users/volth/received_events","type":"User","site_admin":false},"created_at":"2018-07-08T16:33:06Z","updated_at":"2018-07-08T16:33:06Z","author_association":"CONTRIBUTOR","body":"@GrahamcOfBorg build xz"}}
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