Always provide metadata of ansible.builtin.

src/antsibull_docs/data/collection-enum.py

@@ -249,11 +249,10 @@ def main(args):
         collection_name = f'{meta["namespace"]}.{meta["name"]}'
         if match_filter(collection_name, coll_filter):
             result['collections'][collection_name] = meta
-    if match_filter('ansible.builtin', coll_filter):
-        result['collections']['ansible.builtin'] = {
-            'path': os.path.dirname(ansible_release.__file__),
-            'version': ansible_release.__version__,
-        }
+    result['collections']['ansible.builtin'] = {
+        'path': os.path.dirname(ansible_release.__file__),
+        'version': ansible_release.__version__,
+    }
 
     print(json.dumps(
         result, cls=AnsibleJSONEncoder, sort_keys=True, indent=4 if arguments.pretty else None))

src/antsibull_docs/docs_parsing/ansible_doc.py

@@ -217,12 +217,11 @@ def get_collection_metadata(venv: t.Union['VenvRunner', 'FakeVenvRunner'],
                             ) -> t.Dict[str, AnsibleCollectionMetadata]:
     collection_metadata = {}
 
-    # Obtain ansible.builtin version
-    if collection_names is None or 'ansible.builtin' in collection_names:
-        venv_ansible = venv.get_command('ansible')
-        ansible_version_cmd = venv_ansible('--version', _env=env)
-        raw_result = ansible_version_cmd.stdout.decode('utf-8', errors='surrogateescape')
-        collection_metadata['ansible.builtin'] = _extract_ansible_builtin_metadata(raw_result)
+    # Obtain ansible.builtin version and path
+    venv_ansible = venv.get_command('ansible')
+    ansible_version_cmd = venv_ansible('--version', _env=env)
+    raw_result = ansible_version_cmd.stdout.decode('utf-8', errors='surrogateescape')
+    collection_metadata['ansible.builtin'] = _extract_ansible_builtin_metadata(raw_result)
 
     # Obtain collection versions
     venv_ansible_galaxy = venv.get_command('ansible-galaxy')

src/antsibull_docs/docs_parsing/parsing.py

@@ -53,8 +53,9 @@ async def get_ansible_plugin_info(venv: t.Union['VenvRunner', 'FakeVenvRunner'],
                     {information from ansible-doc --json.  See the ansible-doc documentation
                      for more info.}
 
-        The second component is a Mapping of collection names to metadata.
-
+        The second component is a Mapping of collection names to metadata. The second mapping
+        always includes the metadata for ansible.builtin, even if it was not explicitly
+        mentioned in ``collection_names``.
     """
     flog = mlog.fields(func='get_ansible_plugin_info')