`PyToolConfig._setup_arg_parser()` passes the field type directly to
argparse as `type=`. For `bool` fields this means `bool(<string>)`,
which is `True` for any non-empty string, so a boolean option cannot be
disabled from the command line.

test.py:

    from argparse import ArgumentParser
    from dataclasses import dataclass
    from pathlib import Path

    from pytoolconfig import PyToolConfig, field

    @dataclass
    class Config:
        verbose: bool = field(False, command_line=("--verbose",))

    config = PyToolConfig("t", Path("."), Config, arg_parser=ArgumentParser())
    print(config.parse(["--verbose", "False"]).verbose)

Actual: `True`

Expected: `False`

`--verbose 0` and `--verbose no` give `True` as well; only an empty
string gives `False`.

Possible fixes: register `bool` fields with
`action=argparse.BooleanOptionalAction` (Python 3.9+), or with a
converter that accepts the usual true/false strings.

Reproduced with python3-pytoolconfig 1.3.1-5 (code unchanged in 1.3.1-6)
on Python 3.13 and 3.14, and with upstream main (bee6db4).

This is an upstream bug, it will be forwarded.

We believe that the bug you reported is fixed in the latest version of
pytoolconfig, which is due to be installed in the Debian FTP archive.

A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 1150755@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Nico Della Torre <nicoz91@ubuntu.com> (supplier of updated pytoolconfig package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@ftp-master.debian.org)
Format: 1.8
Date: Sat, 17 Oct 2026 08:10:24 +0200
Source: pytoolconfig
Architecture: source
Version: 1.3.1-6
Distribution: unstable
Urgency: medium
Maintainer: Debian Python Team <team+python@tracker.debian.org>
Changed-By: Nico Della Torre <nicoz91@ubuntu.com>
Closes: 1093665 1150754 1150755 1150758 1150759 1150760 1150761 1150769 1150770
Changes:
 pytoolconfig (1.3.1-6) unstable; urgency=medium
 .
   * Add myself to Uploaders. (Closes: #1093665)
   * Add debian/upstream/metadata.
   * Fix capitalization of Python in the package description.
   * Add patches fixing upstream bugs, with tests:
     - Resolve postponed annotations of configuration models.
       (Closes: #1150754)
     - Parse boolean command line values explicitly. (Closes: #1150755)
     - Convert Enum values when fall_through is enabled. (Closes: #1150758)
     - Convert string values to bool, int and float fields.
       (Closes: #1150759)
     - Return Python versions allowed by requires-python. (Closes: #1150760)
     - Give command line arguments precedence over universal configuration.
       (Closes: #1150761)
     - Read the version from the package metadata. (Closes: #1150769)
     - Use the first source configuring the tool even if empty.
       (Closes: #1150770)
   * Add patch replacing deprecated typing aliases with built-in generics
     and collections.abc.
   * Add patch updating the README: document the features, add a usage
     example and state that Python 3.10 or later is required.
   * Run the upstream test suite as autopkgtest with autopkgtest-pkg-pybuild.
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