Using virtualenv with provy

[John Donovan]

Hi,

I'm new to provy, and I've been experimenting with setting up a simple Flask app on a Vagrant VM. As is generally best practice, I want to create a virtualenv for the app, but I'm having difficulty getting it working with pip. Here's my provyfile.py, mostly copied from the getting started code.

from provy.core import Role

from provy.more.debian import VirtualenvRole, PipRole, UserRole

class MyServer(Role):

    def provision(self):

        with self.using(UserRole) as role:

            role.ensure_user('wibble', identified_by='foobar', is_admin=True)

        self.update_file('simpleserver.py', '/home/wibble/simpleserver.py', owner='wibble', sudo=True)

        with self.using(PipRole) as pip, self.using(VirtualenvRole) as venv:

            venv.user = 'wibble'

            with venv('serverenv2'):

                pip.set_user('wibble')

                pip.ensure_requirements_installed('requirements.txt')

servers = {

    'test': {

        'myserver': {

            'address': '192.168.0.100',

            'user': 'vagrant',

            'roles': [

                MyServer

            ]

        }

    }

}

What I would like is for the virtualenv serverenv2 to be created for user wibble, and then for pip to do its thing with requirements.txt

What I get, however, is this:

Info: Provy is running using the 'test' set of servers.

*************************************

Provisioning vag...@192.168.0.100...

*************************************

[vag...@192.168.0.100] Login password for 'john': 

[12:44:35] Group wibble not found! Creating...

[12:44:35] Group wibble created!

[12:44:35] User wibble not found! Creating...

[12:44:35] User wibble created!

[12:44:35] Hashes differ  => None! Copying simpleserver.py to server 192.168.0.100!

[vag...@192.168.0.100] put: /var/folders/gh/wm64c4k94fbgb0v58syr2jnm0000gn/T/tmpNrnbh2 -> /home/wibble/simpleserver.py

[12:44:36] "change_file_owner" is deprecated, please use "change_path_owner" instead.

[12:44:36] Updating aptitude sources...

[12:44:42] Aptitude sources up-to-date

[12:44:43] curl is not installed (via aptitude)! Installing...

[12:44:48] curl is installed (via aptitude).

[12:44:48] python-setuptools is not installed (via aptitude)! Installing...

[12:44:52] python-setuptools is installed (via aptitude).

[12:44:53] python-dev is not installed (via aptitude)! Installing...

[12:45:09] python-dev is installed (via aptitude).

[12:45:13] virtualenv is not installed (via pip)! Installing...

[12:45:20] virtualenv installed!

[12:45:20] virtualenvwrapper is not installed (via pip)! Installing...

[12:45:46] virtualenvwrapper installed!

[vag...@192.168.0.100] sudo: virtualenv /home/vagrant/.virtualenvs/serverenv2

[vag...@192.168.0.100] out: Traceback (most recent call last):

[vag...@192.168.0.100] out:   File "/usr/local/bin/virtualenv", line 9, in <module>

[vag...@192.168.0.100] out:     load_entry_point('virtualenv==1.8.4', 'console_scripts', 'virtualenv')()

[vag...@192.168.0.100] out:   File "/usr/local/lib/python2.6/dist-packages/virtualenv.py", line 964, in main

[vag...@192.168.0.100] out:     never_download=options.never_download)

[vag...@192.168.0.100] out:   File "/usr/local/lib/python2.6/dist-packages/virtualenv.py", line 1065, in create_environment

[vag...@192.168.0.100] out:     site_packages=site_packages, clear=clear))

[vag...@192.168.0.100] out:   File "/usr/local/lib/python2.6/dist-packages/virtualenv.py", line 1236, in install_python

[vag...@192.168.0.100] out:     mkdir(lib_dir)

[vag...@192.168.0.100] out:   File "/usr/local/lib/python2.6/dist-packages/virtualenv.py", line 406, in mkdir

[vag...@192.168.0.100] out:     os.makedirs(path)

[vag...@192.168.0.100] out:   File "/usr/lib/python2.6/os.py", line 150, in makedirs

[vag...@192.168.0.100] out:     makedirs(head, mode)

[vag...@192.168.0.100] out:   File "/usr/lib/python2.6/os.py", line 150, in makedirs

[vag...@192.168.0.100] out:     makedirs(head, mode)

[vag...@192.168.0.100] out:   File "/usr/lib/python2.6/os.py", line 150, in makedirs

[vag...@192.168.0.100] out:     makedirs(head, mode)

[vag...@192.168.0.100] out:   File "/usr/lib/python2.6/os.py", line 157, in makedirs

[vag...@192.168.0.100] out:     mkdir(name, mode)

[vag...@192.168.0.100] out: OSError: [Errno 13] Permission denied: '/home/vagrant/.virtualenvs'

[vag...@192.168.0.100] out: 

Fatal error: sudo() received nonzero return code 1 while executing!

Requested: virtualenv /home/vagrant/.virtualenvs/serverenv2

Executed: sudo -S -p 'sudo password:'  -u "wibble"  /bin/bash -l -c "virtualenv /home/vagrant/.virtualenvs/serverenv2"

Aborting.

I'm clearly missing something, because the virtualenv doesn't get created for any user.

Regards,

John

[Bernardo Heynemann]

I think that's a bug. The virtualenv should've been created for user wiggle...

We'll fix it asap. Thanks for the report John.

Cheers,

Bernardo Heynemann
Developer @ globo.com

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[Diogo Baeder]

Indeed a bug. New issue opened for it, please refer to https://github.com/python-provy/provy/issues/117 .

Fix will be released with 0.6.1 (sometime this week); until then, please specify venv.base_directory as per the documentation:

https://provy.readthedocs.org/en/latest/api/provy.more.debian.package.html#module-provy.more.debian.package.virtualenv

Cheers,

Diogo

[John Donovan]

Fantastic, thanks Diogo. My workaround is as suggested in the bug report, explicitly setting the virtualenv's base_directory before the with() block.

-John