{"action":"opened","issue":{"url":"https://api.github.com/repos/paylogic/pip-accel/issues/62","labels_url":"https://api.github.com/repos/paylogic/pip-accel/issues/62/labels{/name}","comments_url":"https://api.github.com/repos/paylogic/pip-accel/issues/62/comments","events_url":"https://api.github.com/repos/paylogic/pip-accel/issues/62/events","html_url":"https://github.com/paylogic/pip-accel/issues/62","id":115109626,"number":62,"title":"Windows / Appveyor - same version of cached file - invalidated and built  again","user":{"login":"matysek","id":527280,"avatar_url":"https://avatars.githubusercontent.com/u/527280?v=3","gravatar_id":"","url":"https://api.github.com/users/matysek","html_url":"https://github.com/matysek","followers_url":"https://api.github.com/users/matysek/followers","following_url":"https://api.github.com/users/matysek/following{/other_user}","gists_url":"https://api.github.com/users/matysek/gists{/gist_id}","starred_url":"https://api.github.com/users/matysek/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/matysek/subscriptions","organizations_url":"https://api.github.com/users/matysek/orgs","repos_url":"https://api.github.com/users/matysek/repos","events_url":"https://api.github.com/users/matysek/events{/privacy}","received_events_url":"https://api.github.com/users/matysek/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2015-11-04T17:49:46Z","updated_at":"2015-11-04T17:49:46Z","closed_at":null,"body":"I am using `pip-accel` with appveyor in my project and `pip-accel` invalidates even the same version of a package that is already cached:\r\n```\r\npip_accel.bdist    INFO Invalidating old numpy (1.10.1) binary (source is newer) ..\r\npip_accel.bdist    INFO Building numpy (1.10.1) binary distribution ..\r\n```\r\nUrl for appveyor build: https://ci.appveyor.com/project/matysek/pyinstaller-ewwmo/build/181/job/6aj9u6f8lsfbpej9\r\n\r\nIn the build appveyor is instructed to cache these paths:\r\n```\r\nC:\\Users\\appveyor\\AppData\\Local\\pip\r\nC:\\Users\\appveyor\\AppData\\Roaming\\.pip-accel\r\n```\r\n\r\n* I've seen already similar issue when porting `pip-accel` to windows.\r\n* My workaround was to ignore the `mtime`.\r\n* It looks like `mtime` is not reliable when appveyor caches some files to any external storage between builds."}}