Using Ansible, how can I install PythonBrew system-wide?

Question

I'm trying to create a playbook with Ansible (v 1.3.3) to install Pythonbrew system-wide on a Debian server following the instructions in the Pythonbrew readme file.

I am able to get Pythonbrew installed but I cannot install the specific version of Python that I want with it. I suspect the issue has to do with the shell environment Ansible is running under.

Here's my playbook script:

- name: Install and configure PythonBrew
  hosts: dev
  user: root
  vars_files:
    - vars.yml
  gather_facts: false

  tasks:
    - name: Install PythonBrew Debian packages
      apt: pkg=${item} state=installed update-cache=yes
      with_items: ${pythonbrew_packages}

    - name: Install PythonBrew system-wide
      shell: curl -kL http://xrl.us/pythonbrewinstall | bash creates=/usr/local/pythonbrew executable=/bin/bash

    - name: Update bashrc for PythonBrew
      lineinfile:
        dest=~/.bashrc
        regexp='^'
        line='[[ -s $HOME/.pythonbrew/etc/bashrc ]] && source $HOME/.pythonbrew/etc/bashrc'
        state=present
        create=True

    - name: Install python binary
      shell: pythonbrew install -v ${python_version} executable=/bin/bash

When I run this playbook, it fails with the following output

failed: [devserver] => {"changed": true, "cmd": "pythonbrew install -v 2.7.3 ", "delta": "0:00:00.016639", "end": "2013-10-11 15:21:40.989677", "rc": 127, "start": "2013-10-11 15:21:40.973038"} stderr: /bin/bash: pythonbrew: command not found

I've been tweaking things for the last hour or so to no avail. Does anybody have any suggestions for fixing this?

Answer 1

By peeking at the PythonBrew install script, I was able to figure this out. (And just in time for the deprecation of PythonBrew!)

Here's the playbook that installs PythonBrew without manual intervention. This may be of interest to anyone trying to script PythonBrew to install automatically.

vars.yml

#
# Python/PythonBrew Settings
# TODO: replace old-style Ansible ${vars} with jinja-style {{ vars }}
#
project_name: MY_PROJECT

python:
  version: 2.7.3

pythonbrew:
  root: /usr/local/pythonbrew
  bashrc_path: $HOME/.pythonbrew/etc/bashrc

  packages:
    - curl
    - zlib1g-dev
    - libsqlite3-dev
    - libssl-dev
    - libxml2
    - libxml2-dev
    - libxslt1-dev
    - libmysqlclient-dev
    - libbz2-dev

pythonbrew.yml

---

#
# Install and Configure PythonBrew
#
- name: Install and configure PythonBrew
  hosts: MY_HOST
  user: root
  vars_files:
    - vars.yml
  gather_facts: false

  tasks:
    - name: Install PythonBrew Debian packages
      apt: pkg=${item} state=installed update-cache=yes
      with_items: ${pythonbrew.packages}

    - name: Install PythonBrew system-wide
      shell: curl -kL http://xrl.us/pythonbrewinstall | bash
        executable=/bin/bash
        creates=${pythonbrew.root}

    - name: Update bashrc for PythonBrew
      lineinfile:
        dest=/root/.bashrc
        regexp='^'
        line='[[ -s ${pythonbrew.bashrc_path} ]] && source ${pythonbrew.bashrc_path}'
        state=present
        create=True

    # This step allows install to continue without new shell. Pulled from:
    # https://github.com/utahta/pythonbrew/blob/master/pythonbrew/installer/pythonbrewinstaller.py#L91
    - name: Install python binary
      shell: export PYTHONBREW_ROOT=${pythonbrew.root}; source ${pythonbrew.root}/etc/bashrc; pythonbrew install ${python.version}
        executable=/bin/bash

    - name: Switch to python version
      shell: export PYTHONBREW_ROOT=${pythonbrew.root}; source ${pythonbrew.root}/etc/bashrc; pythonbrew switch ${python.version}
        executable=/bin/bash