download, build, and install aur packages with ansible

ansible-aur-pkg-installer.md

About

(Forked from: https://gist.github.com/cahna/45bb9eee92c5f1fce66f)

When using ArchLinux, I typically prefer to use an AUR helper like pacaur or yaourt to automate away the process of installing a community package.

Ansible's pacman module is great, but it doesn't support AUR packages or pacman's -U flag. Installing AUR packages with Ansible seemed to be left as an exercise to the user, and since AUR helpers do not come with a fresh Arch install, I created this set of tasks to be a reusable way of installing AUR packages on my Arch hosts.

I should take the time to PR an AUR module for Ansible sometime soon, but this is a nice, resusable submodule for any Arch-based Ansible role.

Example

---
- name: install yaourt on ArchLinux hosts
  hosts: my_archlinux_host_group
  gather_facts: yes
  vars:
    makepkg_nonroot_user: "{{ ansible_ssh_user }}"
  tasks:
    - name: install package-query (a yaourt dependency)
      include: aur/pkg.yml pkg_name=package-query
      
    - name: install yaourt
      include: aur/pkg.yml pkg_name=yaourt

Reccommended Usage

1. Add this gist as a submodule to your Ansible role or playbook

# Example ./roles directory structure for an existing Ansible playbook with a 'foobar' role 
#   roles/
#     foobar/
#       tasks/
#         aur/          # Source repo added as a submodule (cloned into an `aur` directory)
#           pkg.yml     # Include this file with vars 'pkg_name' and 'makepkg_nonroot_user' to install an AUR package
$ cd ./roles/foobar/tasks
$ git submodule add https://gist.github.com/39ecb1eb1ab8ee1d0ce1.git aur

2. Now aur/pkg.yml may be included from any task or handler within the foobar role. Given the variables pkg_name and makepkg_nonroot_user, the tasks will validate, download, compile (as the makepkg_nonroot_user user), and install (as root) the pkg_name package.

Tip: Set makepkg_nonroot_user in your group_vars/all file to avoid repeating yourself.

pkg.yml

---
- name: AUR | get metadata from AurJson api
  connection: local
  become: no
  uri: >
    url=https://aur.archlinux.org/rpc.php?v=5&type=info&arg={{ pkg_name | mandatory }}
    return_content=yes
    timeout=6
  register: api_info

- assert:
    that:
      - api_info.status == 200
      - api_info.json is defined
      - api_info.json.type == 'multiinfo'
      - api_info.json.resultcount == 1
      - api_info.json.results is defined

- name: AUR | get installed package version
  become: no
  shell: pacman -Q | grep {{ pkg_name }} | cut -d ' ' -f2
  register: pacman_query_result

- name: AUR | Check if the AUR Version is already installed
  become: no
  when: api_info.json.results[0].Version != pacman_query_result.stdout
  shell: echo "Needs Install"
  register: version_check_result

- name: AUR | {{ pkg_name }} | download tarball
  become: no
  when: version_check_result.changed
  connection: local
  get_url: >
    url='https://aur.archlinux.org{{ api_info.json.results[0].URLPath }}'
    dest='/tmp/'
  register: aur_tarball

- name: AUR | {{ pkg_name }} | upload tarball to host and extract it
  become: no
  when: version_check_result.changed
  unarchive: >
    src={{ aur_tarball.dest }}
    dest=/tmp/
  register: extracted_pkg

- name: AUR | {{ pkg_name }} | resolve dependencies
  when: extracted_pkg is changed
  become: yes
  shell: |
    source /tmp/{{ pkg_name }}/PKGBUILD
    [[ -n "$depends" ]] && pacman --noconfirm --noprogressbar -Sy "${depends[@]}" || echo "Nothing to do on 'depends'"
    [[ -n "$makedepends" ]] && pacman --noconfirm --noprogressbar -Sy "${makedepends[@]}" || echo "Nothing to do on 'makedepends'"
  args:
    chdir: /tmp/{{ pkg_name }}
    executable: /usr/bin/bash
  register: aur_resolving_dependencies_result

# This will break if run as root. Set user to use with makepkg with 'makepkg_user' var
- name: AUR | {{ pkg_name }} | build package
  when: extracted_pkg is changed
  become: no
  shell: |
    makepkg --noconfirm --noprogressbar -mfs
  args:
    chdir: /tmp/{{ pkg_name }}
  register: aur_makepkg_result

- name: AUR | {{ pkg_name }} | uninstall makedepends
  when: extracted_pkg is changed and aur_makepkg_result is changed
  become: yes
  shell: |
    source /tmp/{{ pkg_name }}/PKGBUILD
    [[ -n "$makedepends" ]] && pacman --noconfirm --noprogressbar -Rscnu "${makedepends[@]}"
  args:
    chdir: /tmp/{{ pkg_name }}
    executable: /usr/bin/bash
  ignore_errors: yes

- name: AUR | {{ pkg_name }} | get package extension from /etc/makepkg.conf
  when: extracted_pkg is changed
  shell: "grep PKGEXT /etc/makepkg.conf | cut -d '=' -f 2 | tr -d \"'\""
  register: package_extension

- name: AUR | {{ pkg_name }} | install newly-built aur package with pacman
  when: aur_makepkg_result is changed
  become: yes
  shell: |
    pacman --noconfirm --noprogressbar --needed -U *{{ package_extension.stdout }}
  args:
    chdir: /tmp/{{ pkg_name }}
  register: pacman_install_result
  changed_when: pacman_install_result.stdout is defined and pacman_install_result.stdout.find('there is nothing to do') == -1