zuul-jobs/roles/ensure-virtualenv
Ian Wienand a016a1a565 linters: standardise on newline at end of file
I noticed this by accident when I ran ansible-lint over this repo from
an outside context; it didn't use the .yamllint in here and started
compalining about eof whitespace.

After scratching my head for a bit as to why this didn't fail here, I
realised we've allowed various newlines since the initial commit
I936fe2c997597972d884c5fc62655d28e8aaf8c5.

Remove this and just use the default eof rules, and fixup the
whitespace as required.  This is fairly unimportant, but is nice for
consistency.

Change-Id: Idb46a1f39ba798b0bf70eaa27b4c6b4758ce3d26
2022-07-28 16:19:06 +10:00
..
tasks linters: standardise on newline at end of file 2022-07-28 16:19:06 +10:00
README.rst Add ensure-virtualenv 2020-04-28 06:09:54 +00:00

Ensure virtualenv is available

This role installs the requirements for the virtualenv command on the current distribution.

Users should be aware of some portability issues when using virtualenv:

  • Distributions differ on the interpreter that virtualenv is provided by, so by calling virtualenv with no other arguments means that on some platforms you will get a Python 2 environment and others a Python 3 environment.
  • If you wish to call virtualenv as a module (e.g. python -m virtualenv) you will need to know which interpreter owns the virtualenv package for your distribution; e.g. on some, such as Bionic, virtualenv is provided by python3-virtualenv but python refers to Python 2, so python -m virtualenv is not a portable way to call virtualenv.
  • virtualenv -p python3 is likely the most portable way to consistently get a Python 3 environment. virtualenv -p python2 may not work on some platforms without Python 2.
  • If you use Python 3 and do not require the specific features of virtualenv, it is likely easier to use Python's inbuilt python3 -m venv module to create an isolated environment. If you are using pip: in your Ansible roles and require an environment, see the documentation for :zuulensure-pip.