Blank display on AIX

[jose1711]

A minimalistic example script on AIX does not render any widget - only shows black screen.

code:

#!/usr/bin/env python3
from textual.app import App
from textual.widgets import Button

class MyApp(App):
  BINDINGS = [
          ('q,ctrl+q', 'exit_app', 'Quit'),
          ]

  def compose(self):
    yield Button('FooButton')

  def action_exit_app(self):
    self.app.exit()

if __name__ == "__main__":
  app = MyApp()
  app.run()

No button is displayed but the application does react on keypress: q quits the application but a reset command is required to restore the terminal cursor.

Additional information:

AIX 7200-05-05-2246
Python 3.9.18 (main, Sep 19 2023, 04:57:07) [GCC 10.3.0] on aix
rich              13.7.0
textual           0.50.1

Tested with MobaXTerm and PuTTY.

[davep]

To the best of my knowledge, no maintainer has access to a system running AIX; this might be tricky to address.

[willmcgugan]

Have you been able to run other non-Textual TUIs with the same configuration?

The following may generate some useful information:

TEXTUAL_LOG=textual.log python myapp.py

[jose1711]

---
driver=<class 'textual.drivers.linux_driver.LinuxDriver'>
loop=<_UnixSelectorEventLoop running=True closed=False debug=False>
features=frozenset()
Writing logs to '/home/MYUSER/demo/textual.log'
Load() >>> MyApp(title='MyApp', classes={'-dark-mode'}) method=None
Compose() >>> MyApp(title='MyApp', classes={'-dark-mode'}) method=<App.on_compose>
Compose() >>> Screen(id='_default') method=<Widget.on_compose>
Compose() >>> Button() method=<Widget.on_compose>
Mount() >>> Button() method=<Widget.on_mount>
Compose() >>> ToastRack(id='textual-toastrack') method=<Widget.on_compose>
Mount() >>> ToastRack(id='textual-toastrack') method=<Widget.on_mount>
Compose() >>> Tooltip(id='textual-tooltip') method=<Widget.on_compose>
Mount() >>> Tooltip(id='textual-tooltip') method=<Widget.on_mount>
Mount() >>> MyApp(title='MyApp', classes={'-dark-mode'}) method=None
ready in 35 milliseconds
Resize(size=Size(width=121, height=62), virtual_size=Size(width=121, height=62)) >>> MyApp(title='MyApp', classes={'-dark-mode'}) method=<App.on_resize>
Mount() >>> Screen(id='_default') method=<Widget.on_mount>
ScreenResume() >>> Screen(id='_default') method=<Screen.on_screen_resume>
Button() was focused
Resize(size=Size(width=121, height=62), virtual_size=Size(width=121, height=62)) >>> Screen(id='_default') method=<Screen.on_resize>
Update(Tooltip(id='textual-tooltip')) >>> Screen(id='_default') method=<Screen.on_update>
Update(ToastRack(id='textual-toastrack')) >>> Screen(id='_default') method=<Screen.on_update>
Update(Button()) >>> Screen(id='_default') method=<Screen.on_update>
Resize(size=Size(width=121, height=62), virtual_size=Size(width=121, height=62)) >>> Screen(id='_default') method=<Screen.on_resize>
Show() >>> Screen(id='_default') method=None
InvokeLater(callback=functools.partial(<function Screen.set_focus.<locals>.scroll_to_center at 0xa00000000c679d0>, Button())) >>> Screen(id='_default') method=<MessagePump.on_invoke_later>
Resize(size=Size(width=16, height=3), virtual_size=Size(width=16, height=3), container_size=Size(width=16, height=1)) >>> Button() method=None
Show() >>> Button() method=None
Focus() >>> Button() method=<Widget.on_focus>
Ready() >>> MyApp(title='MyApp', classes={'-dark-mode'}) method=None
Update(Button()) >>> Screen(id='_default') method=<Screen.on_update>
Layout() >>> Screen(id='_default') method=<Screen.on_layout>
DescendantFocus(widget=Button()) >>> Screen(id='_default') method=None
Update(Button()) >>> Screen(id='_default') method=<Screen.on_update>
DescendantFocus(widget=Button()) >>> MyApp(title='MyApp', classes={'-dark-mode'}) method=None
Key(key='q', character='q', name='q', is_printable=True) >>> Button() method=<Widget.on_key>
Key(key='q', character='q', name='q', is_printable=True) >>> Screen(id='_default') method=<Widget.on_key>
Key(key='q', character='q', name='q', is_printable=True) >>> MyApp(title='MyApp', classes={'-dark-mode'}) method=<App.on_key>
<action> namespace=MyApp(title='MyApp', classes={'-dark-mode'}) action_name='exit_app' params=()
ExitApp() >>> MyApp(title='MyApp', classes={'-dark-mode'}) method=<App.on_exit_app>
Unmount() >>> Button() method=<Widget.on_unmount>
Unmount() >>> ToastRack(id='textual-toastrack') method=<Widget.on_unmount>
Unmount() >>> Tooltip(id='textual-tooltip') method=<Widget.on_unmount>
focus was removed
Unmount() >>> Screen(id='_default') method=<Widget.on_unmount>
Unmount() >>> MyApp(title='MyApp', classes={'-dark-mode'}) method=None

[jose1711]

Have you been able to run other non-Textual TUIs with the same configuration?

midnight commander (version 4.8.26) is running fine.

$ ldd `which mc`
/opt/freeware/bin/mc needs:
         /usr/lib/libc.a(shr_64.o)
         /usr/lib/libpthreads.a(shr_xpg5_64.o)
         /opt/freeware/lib64/libmc.a(libmc-1.so.0)
         /opt/freeware/lib64/libintl.a(libintl.so.8)
         /opt/freeware/lib64/libglib-2.0.a(libglib-2.0.so.0)
         /opt/freeware/lib64/libslang.a(libslang.so)
         /opt/freeware/lib64/libgmodule-2.0.a(libgmodule-2.0.so.0)
         /unix
         /usr/lib/libcrypt.a(shr_64.o)
         /opt/freeware/lib64/libgcc_s.a(shr.o)
         /opt/freeware/lib/libiconv.a(libiconv.so.2)
         /opt/freeware/lib/libpcre2-8.a(libpcre2-8.so.0)
         /usr/lib/libdl.a(shr_64.o)

[jose1711]

Output of textual diagnose:

Textual Diagnostics

Versions

Name	Value
Textual	0.50.1
Rich	13.7.0

Python

Name	Value
Version	3.9.18
Implementation	CPython
Compiler	GCC 10.3.0
Executable	/home/MYUSER/textual/bin/python3

Operating System

Name	Value
System	AIX
Release	2
Version	7

Terminal

Name	Value
Terminal Application	Unknown
TERM	xterm-256color
COLORTERM	Not set
FORCE_COLOR	Not set
NO_COLOR	Not set

Rich Console options

Name	Value
size	width=121, height=62
legacy_windows	False
min_width	1
max_width	121
is_terminal	True
encoding	iso8859-1
max_height	62
justify	None
overflow	None
no_wrap	False
highlight	None
markup	None
height	None

[TomJGooding]

This is a bit of a long shot, but perhaps try changing your encoding (e.g. UTF-8) and see if that makes any difference?

[jose1711]

@TomJGooding

Thank you, that did it! For reference:

smitty mle_add_lang
CULTURAL convention to install -> 'UTF-8      English (United States) [EN_US]
export LANG=EN_US.UTF-8
python3 -m textual

Seems to be working nice.

[github-actions]

Don't forget to star the repository!

Follow @textualizeio for Textual updates.

[darrenburns]

Wow, nice one @TomJGooding 👏

[willmcgugan]

This is a bit of a long shot, but perhaps try changing your encoding (e.g. UTF-8) and see if that makes any difference?

He shoots. He scores!