Hello, I'm still newbie on OpenWISP2 and Ansible. I had some trouble on
installing OpenWISP2 on Raspbian Jessie with ansbile playbook. This is my
error line:
------------------------------
TASK [openwisp.openwisp2 : Update pip & related tools]
***********************************************
ok: [10.33.109.247]
TASK [openwisp.openwisp2 : Install cryptography from pip]
********************************************
fatal: [10.33.109.247]: FAILED! => {"changed": false, "cmd":
["/opt/openwisp2/env/bin/pip", "install", "-U", "cryptography"], "msg":
"stdout: Collecting cryptography\n Using cached
https://files.pythonhosted.org/packages/c2/95/f43d02315f4ec074219c6e3124a87eba1d2d12196c2767fadfdc07a83884/cryptography-2.7.tar.gz\n
Installing build dependencies: started\n Installing build dependencies:
finished with status 'done'\n Getting requirements to build wheel:
started\n Getting requirements to build wheel: finished with status
'done'\n\n:stderr: DEPRECATION: Python 3.4 support has been deprecated. pip
19.1 will be the last one supporting it. Please upgrade your Python as
Python 3.4 won't be maintained after March 2019 (cf PEP 429).\nERROR:
Exception:\nTraceback (most recent call last):\n File
\"/opt/openwisp2/env/lib/python3.4/site-packages/pip/_internal/cli/base_command.py\",
line 178, in main\n status = self.run(options, args)\n File
\"/opt/openwisp2/env/lib/python3.4/site-packages/pip/_internal/commands/install.py\",
line 352, in run\n resolver.resolve(requirement_set)\n File
\"/opt/openwisp2/env/lib/python3.4/site-packages/pip/_internal/resolve.py\",
line 131, in resolve\n self._resolve_one(requirement_set, req)\n File
\"/opt/openwisp2/env/lib/python3.4/site-packages/pip/_internal/resolve.py\",
line 294, in _resolve_one\n abstract_dist =
self._get_abstract_dist_for(req_to_install)\n File
\"/opt/openwisp2/env/lib/python3.4/site-packages/pip/_internal/resolve.py\",
line 242, in _get_abstract_dist_for\n self.require_hashes\n File
\"/opt/openwisp2/env/lib/python3.4/site-packages/pip/_internal/operations/prepare.py\",
line 362, in prepare_linked_requirement\n
abstract_dist.prep_for_dist(finder, self.build_isolation)\n File
\"/opt/openwisp2/env/lib/python3.4/site-packages/pip/_internal/operations/prepare.py\",
line 169, in prep_for_dist\n
self.install_backend_dependencies(finder=finder)\n File
\"/opt/openwisp2/env/lib/python3.4/site-packages/pip/_internal/operations/prepare.py\",
line 123, in install_backend_dependencies\n reqs =
req.pep517_backend.get_requires_for_build_wheel()\n File
\"/opt/openwisp2/env/lib/python3.4/site-packages/pip/_vendor/pep517/wrappers.py\",
line 71, in get_requires_for_build_wheel\n 'config_settings':
config_settings\n File
\"/opt/openwisp2/env/lib/python3.4/site-packages/pip/_vendor/pep517/wrappers.py\",
line 162, in _call_hook\n raise
BackendUnavailable\npip._vendor.pep517.wrappers.BackendUnavailable\n"}
PLAY RECAP
*******************************************************************************************
10.33.109.247 : ok=24 changed=0 unreachable=0
failed=1 skipped=40 rescued=0 ignored=1
----------------------------------
I Suggest that my Python version is deprecated, but I already upgrade
Python version to 3.6.3,
[image: raspi.png]
I also tried to install cryptography manually, like this:
pi@ricky:~/Python-3.6.3 $ sudo pip install cryptography
Collecting cryptography
Using cached
https://files.pythonhosted.org/packages/c2/95/f43d02315f4ec074219c6e3124a87eba1d2d12196c2767fadfdc07a83884/cryptography-2.7.tar.gz
Installing build dependencies ... done
Getting requirements to build wheel ... done
Preparing wheel metadata ... done
Collecting six>=1.4.1 (from cryptography)
Downloading
https://files.pythonhosted.org/packages/73/fb/00a976f728d0d1fecfe898238ce23f502a721c0ac0ecfedb80e0d88c64e9/six-1.12.0-py2.py3-none-any.whl
Collecting cffi!=1.11.3,>=1.8 (from cryptography)
Using cached
https://files.pythonhosted.org/packages/93/1a/ab8c62b5838722f29f3daffcc8d4bd61844aa9b5f437341cc890ceee483b/cffi-1.12.3.tar.gz
Collecting asn1crypto>=0.21.0 (from cryptography)
Downloading
https://files.pythonhosted.org/packages/ea/cd/35485615f45f30a510576f1a56d1e0a7ad7bd8ab5ed7cdc600ef7cd06222/asn1crypto-0.24.0-py2.py3-none-any.whl
(101kB)
|████████████████████████████████| 102kB 1.8MB/s
Collecting pycparser (from cffi!=1.11.3,>=1.8->cryptography)
Building wheels for collected packages: cryptography
Building wheel for cryptography (PEP 517) ... done
Stored in directory:
/root/.cache/pip/wheels/d0/02/96/64b1439e5409591b6b0294d1da2f66a4ae4f0548d1bdb225b7
Successfully built cryptography
Installing collected packages: six, pycparser, cffi, asn1crypto,
cryptography
Running setup.py install for cffi ... done
Successfully installed asn1crypto-0.24.0 cffi-1.12.3 cryptography-2.7
pycparser-2.19 six-1.12.0
I got no idea what I should do to fix the error, thanks before.
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