René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"pip interprets Matplotlib dev version as stable","articleBody":"I just noticed that, when I offer pip a directory containing a development version of matplotlib, it will install it, even though I do not use the ``--pre`` flag.  For example this directory:\r\n\r\nhttps://7933911d6844c6c53a7d-47bd50c35cd79bd838daf386af554a83.ssl.cf2.rackcdn.com/\r\n\r\ncontains uploaded development versions of matplotlib, e.g.\r\n\r\nhttps://7933911d6844c6c53a7d-47bd50c35cd79bd838daf386af554a83.ssl.cf2.rackcdn.com/matplotlib-2.0.0+3158.g7b79174-cp27-cp27mu-manylinux1_x86_64.whl#sha256=643db393739b13ac93f6519a1dff8af41585dd5462a363f6aa1a923a68b783c1\r\n\r\nIf I do:\r\n\r\n```\r\npip install --find-links=https://7933911d6844c6c53a7d-47bd50c35cd79bd838daf386af554a83.ssl.cf2.rackcdn.com matplotlib\r\n```\r\n\r\nI get:\r\n\r\n```\r\nCollecting matplotlib\r\n  Downloading https://7933911d6844c6c53a7d-47bd50c35cd79bd838daf386af554a83.ssl.cf2.rackcdn.com/matplotlib-2.0.0+3158.g7b79174-cp27-cp27mu-manylinux1_x86_64.whl (14.3MB)\r\n```\r\n\r\nI think this is because pip is interpreting the `+3158.g7b79174` as irrelevant version decoration, and therefore thinks the real version is `2.0.0`, and that this is a stable version.","author":{"url":"https://github.com/matthew-brett","@type":"Person","name":"matthew-brett"},"datePublished":"2017-01-27T18:02:46.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":15},"url":"https://github.com/7962/matplotlib/issues/7962"}