capslocksucks.yml

---
- hosts: localhost
  vars:
    - kb_key: "com.apple.keyboard.modifiermapping"
    - kb_map_dest: "HIDKeyboardModifierMappingDst"
    - kb_map_src: "HIDKeyboardModifierMappingSrc"
  tasks:
    - shell: >
        ioreg -p IOUSB -c IOUSBDevice |
        grep -e class -e idVendor -e idProduct |
        grep -A2 Internal | grep idVendor | awk -F'= '  '{print $2}'
      register: id_vendor

    - shell: >
        ioreg -p IOUSB -c IOUSBDevice |
        grep -e class -e idVendor -e idProduct |
        grep -A2 Internal | grep idProduct | awk -F'= '  '{print $2}'
      register: id_product

    - shell: >
        echo "{{ kb_key }}.{{ id_vendor.stdout }}-{{ id_product.stdout }}-0"
      register: kb_internal

    - name: "Read builtin keyboard map for caps lock setup"
      shell: >
        defaults -currentHost read -g "{{ kb_internal.stdout }}" |
        perl -pe 's/(\n|\s+|{|}|\(|\)|\=|\;)//g'
      register: current_layout

    - name: "Ensure builtin keyboard maps caps lock to control"
      shell: >
        defaults -currentHost write -g "{{ kb_internal.stdout }}"
        -array "({HIDKeyboardModifierMappingDst=2;HIDKeyboardModifierMappingSrc=0;})"
      when: current_layout.stdout != 'HIDKeyboardModifierMappingDst2HIDKeyboardModifierMappingSrc0'