Trellis requirements installation failure with Ansible & PyYAML

Hi There,
Getting the following error on MacOSX El-Capitan when trying to install the requirements.yml file with Ansible:

Any help is very appreciated :slight_smile:

ERROR! Unexpected Exception: The 'PyYAML' distribution was not found and is required by ansible
the full traceback was:

Traceback (most recent call last):
  File "/usr/local/bin/ansible-galaxy", line 79, in <module>
    mycli = getattr(__import__("ansible.cli.%s" % sub, fromlist=[myclass]), myclass)
  File "/usr/local/lib/python2.7/site-packages/ansible/cli/galaxy.py", line 38, in <module>
    from ansible.galaxy.role import GalaxyRole
  File "/usr/local/lib/python2.7/site-packages/ansible/galaxy/role.py", line 36, in <module>
    from ansible.playbook.role.requirement import RoleRequirement
  File "/usr/local/lib/python2.7/site-packages/ansible/playbook/__init__.py", line 25, in <module>
    from ansible.playbook.play import Play
  File "/usr/local/lib/python2.7/site-packages/ansible/playbook/play.py", line 27, in <module>
    from ansible.playbook.base import Base
  File "/usr/local/lib/python2.7/site-packages/ansible/playbook/base.py", line 35, in <module>
    from ansible.parsing.dataloader import DataLoader
  File "/usr/local/lib/python2.7/site-packages/ansible/parsing/dataloader.py", line 33, in <module>
    from ansible.parsing.vault import VaultLib
  File "/usr/local/lib/python2.7/site-packages/ansible/parsing/vault/__init__.py", line 67, in <module>
    from cryptography.hazmat.primitives.hashes import SHA256 as c_SHA256
  File "/Library/Python/2.7/site-packages/cryptography/hazmat/primitives/hashes.py", line 20, in <module>
    from cryptography.hazmat.backends.interfaces import HashBackend
  File "/Library/Python/2.7/site-packages/cryptography/hazmat/backends/__init__.py", line 16, in <module>
    import pkg_resources
  File "/usr/local/lib/python2.7/site-packages/pkg_resources/__init__.py", line 2927, in <module>
    @_call_aside
  File "/usr/local/lib/python2.7/site-packages/pkg_resources/__init__.py", line 2913, in _call_aside
    f(*args, **kwargs)
  File "/usr/local/lib/python2.7/site-packages/pkg_resources/__init__.py", line 2940, in _initialize_master_working_set
    working_set = WorkingSet._build_master()
  File "/usr/local/lib/python2.7/site-packages/pkg_resources/__init__.py", line 637, in _build_master
    return cls._build_from_requirements(__requires__)
  File "/usr/local/lib/python2.7/site-packages/pkg_resources/__init__.py", line 650, in _build_from_requirements
    dists = ws.resolve(reqs, Environment())
  File "/usr/local/lib/python2.7/site-packages/pkg_resources/__init__.py", line 829, in resolve
    raise DistributionNotFound(req, requirers)
DistributionNotFound: The 'PyYAML' distribution was not found and is required by ansible

Solved by removing installation from pip and re-installing with homebrew.

1 Like