Fix and refix help text for CLI (#55831)

fixes #23395 giving clearer information on installed role path
  re-fixes 'home display issue' for module-path

changelogs/fragments/help_paths_fixes.yml

@@ -0,0 +1,3 @@
+bugfixes:
+    - re-fix CLI help for module path, previous fix which was lost in parser switch
+    - Clarify roles path target behaviour for ansible-galaxy

lib/ansible/cli/arguments/option_helpers.py

@@ -282,8 +282,9 @@ def add_meta_options(parser):
 
 def add_module_options(parser):
     """Add options for commands that load modules"""
+    module_path = C.config.get_configuration_definition('DEFAULT_MODULE_PATH').get('default', '')
     parser.add_argument('-M', '--module-path', dest='module_path', default=None,
-                        help="prepend colon-separated path(s) to module library (default=%s)" % C.DEFAULT_MODULE_PATH,
+                        help="prepend colon-separated path(s) to module library (default=%s)" % module_path,
                         type=unfrack_path(pathsep=True), action=PrependListAction)
 
 

lib/ansible/cli/galaxy.py

@@ -63,11 +63,12 @@ class GalaxyCLI(CLI):
         offline.add_argument('--offline', dest='offline', default=False, action='store_true',
                              help="Don't query the galaxy API when creating roles")
 
+        default_roles_path = C.config.get_configuration_definition('DEFAULT_ROLES_PATH').get('default', '')
         roles_path = opt_help.argparse.ArgumentParser(add_help=False)
         roles_path.add_argument('-p', '--roles-path', dest='roles_path', type=opt_help.unfrack_path(pathsep=True),
                                 default=C.DEFAULT_ROLES_PATH, action=opt_help.PrependListAction,
-                                help='The path to the directory containing your roles. The default is the roles_path '
+                                help='The path to the directory containing your roles. The default is the first writable one'
-                                     'configured in your ansible.cfg file (/etc/ansible/roles if not configured)')
+                                     'configured via DEFAULT_ROLES_PATH: %s ' % default_roles_path)
 
         force = opt_help.argparse.ArgumentParser(add_help=False)
         force.add_argument('-f', '--force', dest='force', action='store_true', default=False, help='Force overwriting an existing role')