Fail test_textual.py due to recent textual._xterm_parser.XTermParser change

[cdeil]

For me with git main latest 9404b43 I get this test fail:

_________________________________________________________________________________________________ test_textual_app _________________________________________________________________________________________________

page = <Page url='http://localhost:60618/'>

    def test_textual_app(page):
        clicks = []
    
        def app():
            # Has to be run on the thread
            class ButtonApp(App):
    
                def compose(self):
                    yield Button("Default")
    
                def on_button_pressed(self, event: Button.Pressed) -> None:
                    clicks.append(event)
    
            app = ButtonApp()
            textual = Textual(app)
            return textual
    
        serve_component(page, app)
    
        expect(page.locator(".xterm-screen")).to_have_count(1)
    
>       wait_until(lambda: bool(page.mouse.click(50, 50) or clicks), page)
E       TimeoutError: wait_until timed out in 5000 milliseconds

panel/tests/ui/pane/test_textual.py:43: TimeoutError
----------------------------------------------------------------------------------------------- Captured stdout call -----------------------------------------------------------------------------------------------
Launching server at http://localhost:60618
----------------------------------------------------------------------------------------------- Captured stderr call -----------------------------------------------------------------------------------------------
╭───────────────────── Traceback (most recent call last) ──────────────────────╮
│ /Users/cdeil/code/oss/panel/.pixi/envs/test-ui/lib/python3.12/site-packages/ │
│ textual/app.py:2592 in _process_messages                                     │
│                                                                              │
│   2589 │   │   │   self.log(driver=driver)                                   │
│   2590 │   │   │                                                             │
│   2591 │   │   │   if not self._exit:                                        │
│ ❱ 2592 │   │   │   │   driver.start_application_mode()                       │
│   2593 │   │   │   │   try:                                                  │
│   2594 │   │   │   │   │   with redirect_stdout(self._capture_stdout):       │
│   2595 │   │   │   │   │   │   with redirect_stderr(self._capture_stderr):   │
│                                                                              │
│ ╭───────────────────────────────── locals ─────────────────────────────────╮ │
│ │                  css = '\n    App {\n        background: $background;\n  │ │
│ │                        color: $text;\n    }\n    *:di'+51                │ │
│ │               driver = <panel.pane._textual.PanelDriver object at        │ │
│ │                        0x147508620>                                      │ │
│ │                error = TypeError('XTermParser.__init__() takes from 1 to │ │
│ │                        2 positional arguments but 3 were given')         │ │
│ │             headless = False                                             │ │
│ │               inline = False                                             │ │
│ │      inline_no_clear = False                                             │ │
│ │           load_event = Load()                                            │ │
│ │         message_hook = None                                              │ │
│ │                mouse = True                                              │ │
│ │            read_from = (                                                 │ │
│ │                        │                                                 │ │
│ │                        '/Users/cdeil/code/oss/panel/.pixi/envs/test-ui/… │ │
│ │                        │   'App.DEFAULT_CSS'                             │ │
│ │                        )                                                 │ │
│ │       ready_callback = None                                              │ │
│ │ run_process_messages = <function                                         │ │
│ │                        App._process_messages.<locals>.run_process_messa… │ │
│ │                        at 0x14763cd60>                                   │ │
│ │                scope = 'App'                                             │ │
│ │                 self = ButtonApp(                                        │ │
│ │                        │   title='ButtonApp',                            │ │
│ │                        │   classes={'-dark-mode'}                        │ │
│ │                        )                                                 │ │
│ │        terminal_size = (0, 0)                                            │ │
│ │          tie_breaker = -1                                                │ │
│ ╰──────────────────────────────────────────────────────────────────────────╯ │
│                                                                              │
│ /Users/cdeil/code/oss/panel/panel/pane/_textual.py:80 in                     │
│ start_application_mode                                                       │
│                                                                              │
│   77 │                                                                       │
│   78 │   def start_application_mode(self):                                   │
│   79 │   │   self._size_watcher = self._terminal.param.watch(self._resize, [ │
│ ❱ 80 │   │   self._parser = XTermParser(lambda: False, self._debug)          │
│   81 │   │   self._input_watcher = self._terminal.param.watch(self._process_ │
│   82 │                                                                       │
│   83 │   def stop_application_mode(self):                                    │
│                                                                              │
│ ╭──────────────────────────── locals ────────────────────────────╮           │
│ │ self = <panel.pane._textual.PanelDriver object at 0x147508620> │           │
│ ╰────────────────────────────────────────────────────────────────╯           │
╰──────────────────────────────────────────────────────────────────────────────╯
TypeError: XTermParser.__init__() takes from 1 to 2 positional arguments but 3 
were given

The reason is that textual 0.76.0 shipped a breaking change:

https://github.com/Textualize/textual/pull/4848/files#diff-2e510f9ff3061a8ebb215a28586d93430b35b5214ba7bc6b2e54e5d29f717fb0L41-R45

Is there a way to use a public API and avoid the private import?

from textual._xterm_parser import XTermParser

Or handle it with an if/else to support both old and new version of textual?

[hoxbro]

You can add an upper pin to pixi.toml for now

[philippjfr]

Had a look around but didn't find a public API.