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/Ubuntu-18.04.yaml

@@ -31,6 +31,7 @@
     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:
@@ -45,3 +46,5 @@
     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