Editing Openai/693a7756-3a00-8011-8828-9989794d92e5 (section)

== gpt-5-1 ==
=== User: ❯ b2 --help ===
❯ b2 --help
Traceback (most recent call last):
  File "/usr/local/bin/b2", line 3, in <module>
    from b2._internal.b2v4.__main__ import main
  File "/usr/local/Cellar/b2-tools/4.4.2_1/libexec/lib/python3.14/site-packages/b2/_internal/b2v4/__main__.py", line 13, in <module>
    main()
    [[User:Lukegao|Lukegao]] ([[User talk:Lukegao|talk]]) 05:17, 12 December 2025 (UTC)^^
  File "/usr/local/Cellar/b2-tools/4.4.2_1/libexec/lib/python3.14/site-packages/b2/_internal/console_tool.py", line 5635, in main
    exit_status = ct.run_command(sys.argv)
  File "/usr/local/Cellar/b2-tools/4.4.2_1/libexec/lib/python3.14/site-packages/b2/_internal/console_tool.py", line 5462, in run_command
    parser = B2.create_parser(name=self.b2_binary_name, b2_binary_name=self.b2_binary_name)
  File "/usr/local/Cellar/b2-tools/4.4.2_1/libexec/lib/python3.14/site-packages/b2/_internal/console_tool.py", line 1023, in create_parser
    parser = B2ArgumentParser('''parser_kwargs)
  File "/usr/local/Cellar/b2-tools/4.4.2_1/libexec/lib/python3.14/site-packages/b2/_internal/arg_parser.py", line 104, in __init__
    self._short_description = self._make_short_description(
                              05:17, 12 December 2025 (UTC)05:17, 12 December 2025 (UTC)05:17, 12 December 2025 (UTC)05:17, 12 December 2025 (UTC)05:17, 12 December 2025 (UTC)[[User:Lukegao|Lukegao]] ([[User talk:Lukegao|talk]])^
        kwargs.get('usage', ''), kwargs.get('description', '')
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/usr/local/Cellar/b2-tools/4.4.2_1/libexec/lib/python3.14/site-packages/b2/_internal/arg_parser.py", line 144, in _make_short_description
    return self._encode_description(line.strip())
           05:17, 12 December 2025 (UTC)05:17, 12 December 2025 (UTC)05:17, 12 December 2025 (UTC)05:17, 12 December 2025 (UTC)[[User:Lukegao|Lukegao]] ([[User talk:Lukegao|talk]]) 05:17, 12 December 2025 (UTC)^^^^^^^^^^^^^^
  File "/usr/local/Cellar/b2-tools/4.4.2_1/libexec/lib/python3.14/site-packages/b2/_internal/arg_parser.py", line 133, in _encode_description
    return rst2ansi(value.encode(encoding), output_encoding=encoding)
  File "/usr/local/Cellar/b2-tools/4.4.2_1/libexec/lib/python3.14/site-packages/rst2ansi/__init__.py", line 48, in rst2ansi
    out = core.publish_string(input_string.decode('utf-8'), settings_overrides=overrides, writer=Writer(unicode=output_encoding.startswith('utf')))
  File "/usr/local/Cellar/b2-tools/4.4.2_1/libexec/lib/python3.14/site-packages/docutils/core.py", line 460, in publish_string
    output, publisher = publish_programmatically(
                        05:17, 12 December 2025 (UTC)05:17, 12 December 2025 (UTC)05:17, 12 December 2025 (UTC)05:17, 12 December 2025 (UTC)[[User:Lukegao|Lukegao]] ([[User talk:Lukegao|talk]]) 05:17, 12 December 2025 (UTC)^
        source_class=io.StringInput, source=source, source_path=source_path,
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    ...<7 lines>...
        config_section=config_section,
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        enable_exit_status=enable_exit_status)
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/Cellar/b2-tools/4.4.2_1/libexec/lib/python3.14/site-packages/docutils/core.py", line 722, in publish_programmatically
    output = publisher.publish(enable_exit_status=enable_exit_status)
  File "/usr/local/Cellar/b2-tools/4.4.2_1/libexec/lib/python3.14/site-packages/docutils/core.py", line 237, in publish
    output = self.writer.write(self.document, self.destination)
  File "/usr/local/Cellar/b2-tools/4.4.2_1/libexec/lib/python3.14/site-packages/docutils/writers/__init__.py", line 80, in write
    self.translate()
    05:17, 12 December 2025 (UTC)05:17, 12 December 2025 (UTC)[[User:Lukegao|Lukegao]] ([[User talk:Lukegao|talk]]) 05:17, 12 December 2025 (UTC)^^
  File "/usr/local/Cellar/b2-tools/4.4.2_1/libexec/lib/python3.14/site-packages/rst2ansi/visitor.py", line 41, in translate
    visitor = self.translator_class(self.document, '''self.options)
  File "/usr/local/Cellar/b2-tools/4.4.2_1/libexec/lib/python3.14/site-packages/rst2ansi/ansi.py", line 113, in __init__
    self.termsize = termsize or get_terminal_size((80,20))
                                05:17, 12 December 2025 (UTC)05:17, 12 December 2025 (UTC)05:17, 12 December 2025 (UTC)~~^^^^^^^^^
  File "/usr/local/Cellar/b2-tools/4.4.2_1/libexec/lib/python3.14/site-packages/rst2ansi/get_terminal_size.py", line 116, in get_terminal_size
    size = _get_terminal_size(sys.__stdout__.fileno())
  File "/usr/local/Cellar/b2-tools/4.4.2_1/libexec/lib/python3.14/site-packages/rst2ansi/get_terminal_size.py", line 75, in _get_terminal_size
    res = fcntl.ioctl(fd, termios.TIOCGWINSZ, b"\x00" * 4)
SystemError: buffer overflow

=== Assistant: This is a known bug in some recent b2-tools / rst2ansi combinations on macOS, especially with Python 3.14. ===
This is a known bug in some recent b2-tools / rst2ansi combinations on macOS, especially with Python 3.14.
The traceback shows:

<syntaxhighlight>fcntl.ioctl(... TIOCGWINSZ ...) → SystemError: buffer overflow

</syntaxhighlight>

This happens because rst2ansi is calling get_terminal_size() in a way that is no longer compatible with Python 3.14 (Python changed some low-level ioctl argument handling).

Good news: you can fix it, and the issue is not your fault.

=== ✅ Fix Options (pick one) ===

==== Option 1 — Run b2 with a safe TERM size override (quick workaround) ====

rst2ansi will not try ioctl if you force a fallback terminal size:

<syntaxhighlight lang="bash">COLUMNS=80 LINES=24 b2 --help

</syntaxhighlight>

or:

<syntaxhighlight lang="bash">export COLUMNS=80
export LINES=24
b2 --help

</syntaxhighlight>

If this works, it means the bug is specifically the ioctl call.

==== Option 2 — Install the Python 3.12-based build instead of Python 3.14 ====

Homebrew recently migrated many formulae to Python 3.14, but rst2ansi is not compatible.

Check your brew version:

<syntaxhighlight lang="bash">brew info b2-tools

</syntaxhighlight>

To downgrade:

<syntaxhighlight lang="bash">brew uninstall b2-tools
brew install b2-tools@4.4.1

</syntaxhighlight>

or whatever the latest Python-3.12-based version is (Homebrew normally keeps one old revision).

If that works, pin it:

<syntaxhighlight lang="bash">brew pin b2-tools

</syntaxhighlight>

==== Option 3 — Force pip version of rst2ansi that avoids the bug ====

(For users comfortable patching their Homebrew libexec)

<syntaxhighlight lang="bash">pip3 install --force-reinstall "rst2ansi==0.1.5"

</syntaxhighlight>

Older versions avoid the broken TIOCGWINSZ call.

You may need to run it inside b2's libexec Python:

<syntaxhighlight lang="bash">/usr/local/Cellar/b2-tools/4.4.2_1/libexec/bin/pip install "rst2ansi==0.1.5"

</syntaxhighlight>

==== Option 4 — Disable rst2ansi entirely ====

You can tell b2 to skip fancy formatting:

<syntaxhighlight lang="bash">b2 --no-color --help

</syntaxhighlight>

Or:

<syntaxhighlight lang="bash">export B2_USE_PLAIN_TEXT=1

</syntaxhighlight>

(If the env var doesn't exist, you can patch it by editing the console tool, but usually --no-color is enough.)

=== ✔ What I recommend ===

Start with easiest:

1️⃣ Try:

<syntaxhighlight lang="bash">COLUMNS=80 LINES=24 b2 --help

</syntaxhighlight>

If it works → it's definitely the Python 3.14 ioctl bug.
Then do:

2️⃣ Install older b2-tools linked against Python 3.12.

If you want, I can:
* Check what brew info b2-tools reports
* Suggest the exact version to install based on your Homebrew versions
* Provide a patch to fix the bug inside the installed package

Just paste:

<syntaxhighlight lang="bash">brew info b2-tools
python3 --version

</syntaxhighlight>