Parameter cwd failed on Exec[pip_install_rpyc]: cwd must be a fully qualified path

[jonancm]

I'm using puppet-python 1.8.2 to create a virtual environment as part of the provisioning process of an ubuntu/trusty64 virtual machine created with Vagrant and VirtualBox and running Puppet 3.4.3:

config.vm.provision :shell, inline: "puppet module install --force stankevich-python"

python::virtualenv { 'venv' :
    ensure => present,
    # requirements => '/vagrant/requirements.txt',
    systempkgs => false,
    venv_dir => '/opt/venv',
    owner => 'root',
    group => 'root',
}

Then I install software using python::pip like this:

python::pip { 'rpyc' :
    ensure => '3.2.3',
    virtualenv => 'venv',
}

When Puppet is invoked, I'm getting the following error:

Error: Parameter cwd failed on Exec[pip_install_rpyc]: cwd must be a fully qualified path at /etc/puppet/modules/python/manifests/pip.pp:195

Researching a bit, I found that pull request #8 solves a similar issue in the implementation of python::requirements, but the problem I'm having is with python::virtualenv, which is apparently still unsolved.

To reproduce this issue:

1. Create a new Vagrantfile with the following contents:

   # -*- mode: ruby -*-
   # vi: set ft=ruby :
   
   # Vagrantfile API/syntax version. Don't touch unless you know what you're doing!
   VAGRANTFILE_API_VERSION = "2"
   
   Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
           config.vm.box = "ubuntu/trusty64"
           config.vm.provision :shell, inline: "puppet module install --force stankevich-python"
           config.vm.provision "puppet" do |puppet|
                   puppet.manifests_path = "manifests"
                   puppet.manifest_file  = "site.pp"
           end
   end

2. Create the manifests directory:

   $ mkdir manifests

3. Create the Puppet manifest at manifests/site.pp with the following contents:

   python::virtualenv { 'venv' :
           ensure => present,
           # requirements => '/vagrant/requirements.txt',
           systempkgs => false,
           venv_dir => '/opt/venv',
           owner => 'root',
           group => 'root',
   }
   
   python::pip { 'rpyc' :
           ensure => '3.2.3',
           virtualenv => 'venv',
   }

4. Start the VM:

   $ vagrant up

   or provision the VM if it's already running:

   $ vagrant provision