---
- name: Cosmos Server Pipeline
  hosts: all
  become: yes
  vars:
    iso_only: true
  
  roles:
    - role: cosmos_init
      when: not refresh_special | bool

    - role: docker_workstation
      when: install_docker | bool and not refresh_special | bool

    - role: nvidia_drivers
      when: install_nvidia | bool  and not refresh_special | bool and not skip_nvidia | bool

    - role: ldap_client
      when: install_LDAP | bool  and not refresh_special | bool

#    - role: "{{ special_server }}"
#      when: '"none" not in special_server'


  tasks:
        
    - name: "Run {{ special_server }} role"
      include_role:
        name: "{{ special_server }}"
      when: '"none" not in special_server'
      
...