main.yml

---
- name: goenv checkout repo
  git:
    dest: "{{ ansible_env.HOME }}/.goenv"
    repo: "https://github.com/syndbg/goenv.git"

- name: goenv update profile
  lineinfile:
    create: yes
    dest: "{{ ansible_env.HOME }}/.bash_profile"
    line: "{{ item.line }}"
    regexp: "{{ item.regexp }}"
  with_items:
    - { line: 'export GOENV_ROOT="$HOME/.goenv"', regexp: '^export GOENV_ROOT="\$HOME/\.goenv"' }
    - { line: 'export PATH="$GOENV_ROOT/bin:$PATH"', regexp: '^export PATH="\$GOENV_ROOT/bin:\$PATH"' }
    - { line: eval "$(goenv init -)", regexp: 'eval "\$\(goenv init -\)"' }

- block:
  - name: golang installed versions
    command: goenv versions
    ignore_errors: yes
    register: golang_installed_versions

  - name: golang install versions
    command: goenv install {{ item.key }}
    when:
      (golang.versions is defined) and
      (golang_installed_versions.stdout.find(item.key) == -1)
    with_dict: "{{ golang.versions }}"

  - name: golang global version
    command: goenv global {{ golang.global_version }}
    when: 
      (golang.global_version is defined) and
      (golang_installed_versions.stdout.find('* ' + golang.global_version) == -1)

  - name: golang local versions
    command: goenv local {{ item.0 }} chdir={{ item.1 }}
    ignore_errors: yes
    with_subelements:
      - "{{ golang.versions }}"
      - paths
      - flags:
        skip_missing: true

  environment:
    PATH: "{{ ansible_env.PATH }}:{{ ansible_env.HOME }}/.goenv/bin"

web.yml

---
golang:
  versions:
    - user: vagrant
      installs:
        - version: 1.6.1
          paths:
            - /vagrant