update

ansible/scripts/install_brew.yml

@@ -2,11 +2,13 @@
   stat:
     path: /home/linuxbrew/.linuxbrew/bin/
   register: homebrew_check
+  when: required_packages_brew is defined
 
 - name: Fail If Homebrew Is Not Installed and install_homebrew_if_missing Is False
   fail:
     msg: Homebrew is missing, install from http://brew.sh
   when:
+    - required_packages_brew is defined
     - not homebrew_check.stat.exists
     - not install_homebrew_if_missing
 
@@ -14,6 +16,7 @@
   become_user: user
   shell: /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
   when:
+    - required_packages_brew is defined
     - not homebrew_check.stat.exists
     - install_homebrew_if_missing