matrix-docker-ansible-deploy/roles/matrix-server/tasks/setup/setup_synapse_ext_ldap_auth.yml

- set_fact:
    matrix_synapse_password_providers_enabled: true
  when: "matrix_synapse_ext_password_provider_ldap_enabled"

- set_fact:
    matrix_synapse_additional_loggers: >
      {{ matrix_synapse_additional_loggers }}
      +
      {{ [{'name': 'ldap_auth_provider', 'level': 'INFO'}] }}
  when: "matrix_synapse_ext_password_provider_ldap_enabled"