Log Message:
py-pyobjc: updated to 11.0

Version 11.0
The major change in this release is experimental support for free-threading (PEP \ 
703) which was introduced as an experimental feature in Python 3.13.

This required fairly significant changes in the core of PyObjC to change C \ 
Python API use and PyObjC internal APIs (mostly related to the use of borrowed \ 
references).

Dropped support for Python 3.8. PyObjC 11 supports Python 3.9 and later.

Updated metadata for the macOS 15.2 SDK, including bindings for the following \ 
frameworks:

MediaExtension
DeviceDiscoveryExtension
Added minimal bindings to the Carbon framework.

At this time only some functions and constants related to hotkeys are available. \ 
Please file an issue if you have a usecase for other APIs.

Struct wrappers now support a number of functions from copy: copy.replace() (new \ 
in Python 3.13), copy.copy() and copy.deepcopy().

The __pyobjc_copy__ method has been removed from struct wrappers. This was never \ 
a public API. Use copy.deepcopy() instead.

objc.FSRef.from_path`() now supports os.PathLike values as its arguments (as \ 
well as strings).

Experimental support for the free-threading mode introduced in Python 3.13.

The core bridge and framework bindings claim compatibility with free-threading \ 
as introduced as an experimental feature in Python 3.13.

The support in PyObjC is also an experimental feature: I’ve reviewed code for \ 
free-threading issues and adjusted it where needed, but the code has seen only \ 
light testing w.r.t. concurrency.

Some functionality that’s explicitly not thread-safe:

Defining an Objective-C class with the same name in multiple threads concurrently.

Splitting calls to alloc and init and calling init multiple times concurrently. E.g.:

import threading
from Cocoa import NSObject

v = NSObject.alloc()

t_list = []
for _ in range(2):
    t = threading.Thread(target=lambda: v.init())
    t_list.append(t)
    t.start()

for t in t_list:
    t.join()
The internal mapping from Python values to their active Objective-C proxy value \ 
now uses weak references. This should not affect user code, other than being a \ 
bit more efficient.

The internal interfaces for updating this mapping, and the reverse mapping from \ 
Objective-C values to their active Python proxy was changed to remove a small \ 
race condition. This was required for free threading support, but could in \ 
theory also bit hit when using the GIL.

The data structure for mapping Python values to their Objective-C proxy has been \ 
rewritten to support free threading. This also simplifies the code, and should \ 
be small performance improvement for the regular build of Python.

The TypeError raised when passing a non-sequence value to some APIs implemented \ 
in C now has a __cause__ with more detailed information.

This is a side effect of dropping the use of PySequence_Fast in the \ 
implementation of PyObjC.

Removed objc.options._nscoding_version, a private option that is no longer used.

Changing the __block_signature__ of a block value when the current value of the \ 
signature is not None is no longer possible.

Please file an issue if you have a use case for changing the signature of a block.

Fix compatibility with Python 3.14 (alpha 3)

Removed private function objc._sizeOfType because its unused.

Fix memory leak when using Python callables as blocks.

The memory leak also resulted in leaking a reference to the callable (and hence \ 
anything kept alive by that reference).

The generic __new__ implementation now works as intended when registering \ 
methods that other than init... methods.

Dropped ‘%n’ support in handling printf-format strings for variadic \ 
functions and methods.

Two reasons for that: 1) supporting this properly should return the value \ 
writing to the %n location (requiring significant changes) and 2) Apple’s \ 
libraries require using static strings for ‘%n’ to work (at least on some \ 
platforms and versions of the OS)

Fix manual bindings for AVAudioPCMBuffer methods for getting channel data \ 
(floatChannelData, int16ChannelData and int32ChannelData)

fix broken bindings for CGWindowListCreateImageFromArray.

The private __is_magic attribute on objc.objc_object has been renamed to \ 
__pyobjc_magic_coookie__.

Various fixes to edge case behaviour that were found while improving test coverage.