---
- hosts: all
  become: yes
  vars:
    hostname: mydomain
  pre_tasks:
    # NOTE: you probably don't want to run these pre_tasks on a real box. Just
    # bear in mind that to be able to access hgweb from inside the box, you
    # need to use the virtual host name (i.e. http://127.0.0.1/ won't work).
    # So make sure you either have DNS records for hg.mydomain or it's in
    # /etc/hosts.
    - name: Set hostname
      hostname:
        name: '{{ hostname }}'
    - name: Update /etc/hosts
      lineinfile:
        dest: /etc/hosts
        line: '127.0.0.1 {{ hostname }} hg.{{ hostname }}'
    # NOTE: hgweb role depends on Apache httpd (and mod_wsgi) being installed.
    # It's recommended to install them in a separate apache2 role, not in
    # pre_tasks like in this example playbook.
    - name: Install Apache httpd
      apt:
        update_cache: yes
        cache_valid_time: 3600
        package:
          - apache2
          - libapache2-mod-wsgi-py3
        state: present
    - name: Enable mod_wsgi
      apache2_module:
        state: present
        name: wsgi
    - name: Disable default Apache httpd site
      file:
        path: /etc/apache2/sites-enabled/000-default.conf
        state: absent
  roles:
#    - role: apache2
#      tags: [apache2]
    - role: hgweb
      tags: [hgweb]
  handlers:
    # NOTE: hgweb role notifies this handler:
    # - restart apache2
    # Naturally, the handler is not defined in the role itself, so this example
    # playbook includes it here.
    - name: restart apache2
      service:
        name: apache2
        state: restarted
...
# NOTE: how to test that it works correctly (also see the note about DNS):
# curl -I http://hg.mydomain/
#   will check hgweb pages, look for "200 Script output follows" status
# curl -I http://hg.mydomain/static/mercurial.js
#   will check serving static files via Apache httpd, look for "200 OK" status