From: Lucas C.S. <lucascs@protonmail.com>
Subject: [PATCH] wizard: call ConditionalContainer.__init__ instead of
 hand-setting its attributes

ToolbarView subclasses ConditionalContainer (via BaseToolbarView ->
BaseHelpContainer) but bypasses the parent constructor, assigning .content
and .filter by hand.  That mirrored the parent's entire state only for
prompt_toolkit < 3.0.52.  Since 3.0.52 the constructor also sets
.alternative_content, which preferred_width()/preferred_height() read on
every render, so the bypass leaves the attribute undefined and any attempt
to draw the wizard toolbar dies with:

    AttributeError: 'ToolbarView' object has no attribute 'alternative_content'

Upstream pins prompt-toolkit<3.0.52 in pyproject.toml, which hides the bug
for the bundled installer but is not satisfiable on a distro shipping a
newer one.  Calling the parent constructor is equivalent for the old
version and correct for the new one -- to_container()/to_filter() are
applied inside it.

Every other subclass reaches ConditionalContainer through
BaseHelpContainer.__init__, which does call super(), so this is the only
site affected.

Not yet submitted upstream.
--- a/awscli/customizations/wizard/ui/layout.py
+++ b/awscli/customizations/wizard/ui/layout.py
@@ -283,8 +283,11 @@
     CONDITION = prompt_has_details | error_bar_enabled
 
     def __init__(self):
-        self.content = to_container(self.create_window(self.help_text))
-        self.filter = to_filter(self.CONDITION)
+        ConditionalContainer.__init__(
+            self,
+            self.create_window(self.help_text),
+            self.CONDITION,
+        )
 
     def create_window(self, help_text):
         text_control = FormattedTextControl(text=lambda: help_text)