Ansible role for installing rbenv and ruby

rbenv.yml

---
- name: Find user home
  set_fact:
    user_home: "{{ ansible_env.HOME }}"

- name: Set rbenv dir
  set_fact:
    rbenv_dir: "{{ user_home }}/.rbenv"

- name: Set rbenv bin path
  set_fact:
    rbenv_bin: "{{ rbenv_dir }}/bin/rbenv"

- name: Set rbenv shims path
  set_fact:
    rbenv_shims: "{{ rbenv_dir }}/shims"

- name: Check if rbenv is installed
  stat:
    path: "{{ rbenv_bin }}"
  register: rbenv_bin_stat

- name: Setup rbenv
  when: not rbenv_bin_stat.stat.exists
  block:
    - name: Clone rbenv repo in user home
      git:
        repo: https://github.com/rbenv/rbenv.git
        dest: "{{ rbenv_dir }}"
        version: master

    - name: Compile rbenv bash extension
      command:
        cmd: src/configure && make -C src
        chdir: "{{ rbenv_dir }}"
      ignore_errors: yes # This step is not critical

    - name: Add rbenv to path
      lineinfile:
        line: export PATH="$HOME/.rbenv/bin:$PATH"
        path: "{{ user_home }}/.profile"

    - name: Add rbenv init script to shell profile
      lineinfile:
        line: eval "$(rbenv init -)"
        path: "{{ user_home }}/.profile"

    - name: Clone rbenv-build plugin
      git:
        repo: https://github.com/rbenv/ruby-build.git
        dest: "{{ rbenv_dir }}/plugins/ruby-build"
        version: master

    - name: Download rbenv doctor
      get_url:
        url: https://github.com/rbenv/rbenv-installer/raw/master/bin/rbenv-doctor
        dest: /tmp/rbenv-doctor
        mode: u+x

    - name: Run rbenv doctor
      shell: ". {{ user_home }}/.profile && /tmp/rbenv-doctor"

- name: Check if required ruby version is installed
  stat:
    path: "{{ rbenv_dir }}/versions/{{ ruby_version }}"
  register: ruby_version_dir_stat

- name: Install ruby
  when: not ruby_version_dir_stat.stat.exists # Avoid rebuilding ruby because it takes a really long time
  command: "{{ rbenv_bin }} install {{ ruby_version }}"

- name:  Set ruby version as global default
  command: "{{ rbenv_bin }} global {{ ruby_version }}"