Add llvm role for Debian sid, Ubuntu 18.04, macOS, and Windows

roles/llvm/tasks/Darwin.yaml

@@ -0,0 +1,5 @@
+---
+- name: install homebrew package
+  homebrew:
+    name: llvm
+    state: latest

roles/llvm/tasks/Debian-unstable.yaml

@@ -0,0 +1,13 @@
+---
+- name: install apt packages
+  become: true
+  apt:
+    name:
+      - clang
+      - clang-format
+      - clang-tidy
+      - clang-tools
+      - clangd
+      - llvm
+    state: latest
+    install_recommends: true

roles/llvm/tasks/Debian.yaml

@@ -0,0 +1,2 @@
+---
+- include_tasks: '{{ansible_distribution}}-{{ansible_distribution_version}}.yaml'

roles/llvm/tasks/Ubuntu-18.04.yaml

@@ -0,0 +1,50 @@
+---
+- name: get list of releases from github
+  uri:
+    url: https://api.github.com/repos/llvm/llvm-project/releases
+  register: releases
+
+- name: select latest release with Ubuntu binaries
+  set_fact:
+    release: '{{releases.json | json_query("[?assets | [?contains(name, `x86_64-linux-gnu-ubuntu`)]] | [0]")}}'
+
+- name: select from latest available release with x86_64-linux-gnu-ubuntu asset
+  set_fact:
+    asset: '{{release | json_query("assets | [?contains(name, `x86_64-linux-gnu-ubuntu`)] | [?ends_with(name, `.tar.xz`)] | [0]")}}'
+
+- name: process release name for /usr/local/lib/{{package_name}}
+  set_fact:
+    package_name: '{{release.name | lower | regex_replace(" (\d+)\.\d+\.\d+", "-\1")}}'
+
+- name: set path for archive download
+  set_fact:
+    archive_path: '/tmp/{{asset.name}}'
+
+- name: download release archive
+  get_url:
+    url: '{{asset.browser_download_url}}'
+    dest: '{{archive_path}}'
+
+- name: create package directory
+  become: true
+  file:
+    path: '/usr/local/lib/{{package_name}}'
+    state: directory
+
+# TODO: don't extract when not actually doing a n update
+- name: extract release archive
+  become: true
+  unarchive:
+    src: '{{archive_path}}'
+    dest: '/usr/local/lib/{{package_name}}'
+    extra_opts: ['--strip-components', '1']
+
+- name: create symlinks from /usr/local/lib/{package_name}} to /usr/local/bin
+  become: true
+  file:
+    src: '{{item}}'
+    dest: '/usr/local/bin/{{item | basename}}'
+    state: link
+  with_fileglob: '/usr/local/lib/{{package_name}}/bin/*'
+
+# TODO: cleanup old installs?

roles/llvm/tasks/Windows.yaml

@@ -0,0 +1,5 @@
+---
+- name: install chocolatey package
+  win_chocolatey:
+    name: llvm
+    state: latest

roles/llvm/tasks/main.yaml

@@ -0,0 +1,2 @@
+---
+- include_tasks: '{{ansible_os_family}}.yaml'