Support version switching

[fago]

When the role is installed initially with nodejs 6.x, and the variable is changed to 4.x later on, then it fails to install nodejs in 4.*. This is, as the role just adds a second ppa but apt keeps the higher version package installed.

As workaround I figured that a task like

- name: Ensure Node.js and npm are installed.
  become: yes
  apt: "name=nodejs={{ nodejs_version|regex_replace('x', '') }}* state=present"

solves it. It still keeps both ppas around, but at least the right version of nodejs is installed.

[SebastienElet]

Hello, why you did not change the variable at the initial setup ?

- roles:
  - role: SimpliField.node
    nodejs_version: 4.x

[fago]

Because I missed it. Point is, when you change it later on it does not work.

[SebastienElet]

Ok, i got it.

I use playbooks like this to upgrade

---
- hosts: server
  become: true

  roles:
    - role: SimpliField.node
      nodejs_version: "8.x"

  post_tasks:
  - name: remove node 6.0 source.list
    apt_repository:
      repo: "deb https://deb.nodesource.com/node_6.x wheezy main"
      state: absent

  - name: install latest node version
    apt:
      pkg: nodejs
      update-cache: yes
      state: latest

I will see to ensure remove old source & ensure node version in the role.

Thanks for your feedback !