{"action":"closed","issue":{"url":"https://api.github.com/repos/airbnb/caravel/issues/467","repository_url":"https://api.github.com/repos/airbnb/caravel","labels_url":"https://api.github.com/repos/airbnb/caravel/issues/467/labels{/name}","comments_url":"https://api.github.com/repos/airbnb/caravel/issues/467/comments","events_url":"https://api.github.com/repos/airbnb/caravel/issues/467/events","html_url":"https://github.com/airbnb/caravel/issues/467","id":154745237,"number":467,"title":"fail to install caravel","user":{"login":"vgromakowski","id":8300357,"avatar_url":"https://avatars.githubusercontent.com/u/8300357?v=3","gravatar_id":"","url":"https://api.github.com/users/vgromakowski","html_url":"https://github.com/vgromakowski","followers_url":"https://api.github.com/users/vgromakowski/followers","following_url":"https://api.github.com/users/vgromakowski/following{/other_user}","gists_url":"https://api.github.com/users/vgromakowski/gists{/gist_id}","starred_url":"https://api.github.com/users/vgromakowski/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/vgromakowski/subscriptions","organizations_url":"https://api.github.com/users/vgromakowski/orgs","repos_url":"https://api.github.com/users/vgromakowski/repos","events_url":"https://api.github.com/users/vgromakowski/events{/privacy}","received_events_url":"https://api.github.com/users/vgromakowski/received_events","type":"User","site_admin":false},"labels":[],"state":"closed","locked":false,"assignee":null,"milestone":null,"comments":1,"created_at":"2016-05-13T15:57:03Z","updated_at":"2016-05-13T15:58:08Z","closed_at":"2016-05-13T15:58:08Z","body":"Hi,\r\nI cannot acheive installing caravel on centos 7 using pip\r\n\r\n`Building wheels for collected packages: cryptography, pandas\r\n  Running setup.py bdist_wheel for cryptography ... error\r\n  Complete output from command /usr/bin/python -u -c \"import setuptools, tokenize;__file__='/tmp/pip-build-7nCltq/cryptography/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\\r\\n', '\\n'), __file__, 'exec'))\" bdist_wheel -d /tmp/tmpApEwg7pip-wheel- --python-tag cp27:\r\n  Traceback (most recent call last):\r\n    File \"<string>\", line 1, in <module>\r\n    File \"/tmp/pip-build-7nCltq/cryptography/setup.py\", line 335, in <module>\r\n      **keywords_with_side_effects(sys.argv)\r\n    File \"/usr/lib64/python2.7/distutils/core.py\", line 112, in setup\r\n      _setup_distribution = dist = klass(attrs)\r\n    File \"/usr/lib/python2.7/site-packages/setuptools/dist.py\", line 272, in __init__\r\n      _Distribution.__init__(self,attrs)\r\n    File \"/usr/lib64/python2.7/distutils/dist.py\", line 287, in __init__\r\n      self.finalize_options()\r\n    File \"/usr/lib/python2.7/site-packages/setuptools/dist.py\", line 327, in finalize_options\r\n      ep.load()(self, ep.name, value)\r\n    File \"/usr/lib/python2.7/site-packages/cffi/setuptools_ext.py\", line 161, in cffi_modules\r\n      add_cffi_module(dist, cffi_module)\r\n    File \"/usr/lib/python2.7/site-packages/cffi/setuptools_ext.py\", line 48, in add_cffi_module\r\n      execfile(build_file_name, mod_vars)\r\n    File \"/usr/lib/python2.7/site-packages/cffi/setuptools_ext.py\", line 24, in execfile\r\n      exec(code, glob, glob)\r\n    File \"src/_cffi_src/build_openssl.py\", line 93, in <module>\r\n      extra_link_args=extra_link_args(compiler_type()),\r\n    File \"/tmp/pip-build-7nCltq/cryptography/src/_cffi_src/utils.py\", line 64, in build_ffi_for_binding\r\n      extra_link_args=extra_link_args,\r\n    File \"/tmp/pip-build-7nCltq/cryptography/src/_cffi_src/utils.py\", line 72, in build_ffi\r\n      ffi = FFI()\r\n    File \"/usr/lib/python2.7/site-packages/cffi/api.py\", line 59, in __init__\r\n      \"version mismatch, %s != %s\" % (backend.__version__, __version__)\r\n  AssertionError: version mismatch, 0.8.6 != 1.6.0`\r\n\r\nAs I understand it's a problem with the version of cffi package but I don't know how to upgrade or downgrade it ?"}}