compatcheck: Support checking for package manager

Some distros (fedora) have dnf by default but may be atomic also

roles/compatcheck/meta/argument_specs.yaml

@@ -30,3 +30,13 @@ argument_specs:
             description: Last supported major version. Allows any version if not specified.
             type: int
             required: false
+          package_managers:
+            description: List of supported package managers. Defaults to apt for debian and ubuntu, dnf for fedora, pacman for archlinux
+            type: list
+            required: false
+            elements: str
+            choices:
+              - apt
+              - dnf
+              - pacman
+              - atomic_container

roles/compatcheck/tasks/main.yaml

@@ -2,14 +2,12 @@
 - name: Fail if distribution not supported
   ansible.builtin.fail:
     msg: "{{ lookup('ansible.builtin.template', 'distroerror.j2').strip() }}"
-  when: checkfailed
-  loop:
-    - "{{ compatcheck_distro | length == 0 }}"
-    - >
-      {{
+  when: >
+    _compatcheck_distro | length != 1 or (
       ansible_distribution_major_version != 'n/a' and
-        compatcheck_distro[0].version_min | default(0) > ansible_distribution_major_version | int
-      }}
-    - "{{ compatcheck_distro[0].version_max is defined and compatcheck_distro[0].version_max < ansible_distribution_major_version | int }}"
+      _compatcheck_distro[0].version_min | default(0) > ansible_distribution_major_version | int
+    ) or
+    _compatcheck_distro[0].version_max is defined and _compatcheck_distro[0].version_max < ansible_distribution_major_version | int or
+    ansible_pkg_mgr not in _compatcheck_distro[0].package_managers | default([_compatcheck_default_package_manager])
   loop_control:
     loop_var: checkfailed

roles/compatcheck/templates/distroerror.j2

@@ -1,15 +1,18 @@
 {%- set distros = [] -%}
 {%- for distro in compatcheck_supported_distributions -%}
+  {% set distro_package_managers = distro.package_managers | default([_compatcheck_default_package_managers[distro.name]]) %}
+  {% set distro_package_managers_str = ' (' ~ ', '.join(distro_package_managers) ~ ')' %}
+  {% set distro_name = distro.name | capitalize %}
   {%- if distro.version_min is defined -%}
     {%- if distro.version_max is defined -%}
-      {{ distros.append(distro.name | capitalize + ' ' + distro.version_min | string + '-' + distro.version_max | string) }}
+      {{ distros.append(distro_name ~ ' ' ~ distro.version_min ~ '-' ~ distro.version_max ~ distro_package_managers_str) }}
     {%- else -%}
-      {{ distros.append(distro.name | capitalize + ' ' + distro.version_min | string + '+') }}
+      {{ distros.append(distro_name ~ ' ' ~ distro.version_min ~ '+' ~ distro_package_managers_str) }}
     {%- endif -%}
   {%- elif distro.version_max is defined -%}
-    {{ distros.append(distro.name | capitalize + ' <' + distro.version_max | string) }}
+    {{ distros.append(distro_name ~ ' <' ~ distro.version_max ~ distro_package_managers_str) }}
   {%- else -%}
-    {{ distros.append(distro.name | capitalize) }}
+    {{ distros.append(distro_name ~ distro_package_managers_str) }}
   {%- endif -%}
 {%- endfor -%}
-This role only supports {{ distros | join(', ') }} (You are running {{ ansible_distribution }} {{ ansible_distribution_major_version }})
+This role only supports {{ distros | join(', ') }} (You are running {{ ansible_distribution }} {{ ansible_distribution_major_version }} ({{ ansible_pkg_mgr }})

roles/compatcheck/vars/main.yaml

@@ -1,2 +1,8 @@
 ---
-compatcheck_distro: "{{ compatcheck_supported_distributions | selectattr('name', 'equalto', ansible_distribution | lower) }}"
+_compatcheck_distro: "{{ compatcheck_supported_distributions | selectattr('name', 'equalto', ansible_distribution | lower) }}"
+_compatcheck_default_package_managers:
+  debian: apt
+  ubuntu: apt
+  fedora: dnf
+  archlinux: pacman
+_compatcheck_default_package_manager: "{{ _compatcheck_default_package_managers[ansible_distribution | lower] }}"