packaging 25.0 breaks recipe build

[ssppkenny]

Describe the bug

I have created several recipes for my app, which I was able to compile with packaging 24.2 for python 3.12.9
Now when I start forge android readpdfutils, I get the following error message:

ile "/Users/username/code/python/mobile-forge/build/cp312/readpdfutils/1.0.5/venv3.12-android_24_arm64_v8a/build/lib/python3.12/site-packages/packaging/tags.py", line 556, in android_platforms
api_level = platform.android_ver().api_level # type: ignore[attr-defined]
^^^^^^^^^^^^^^^^^^^^
AttributeError: module 'platform' has no attribute 'android_ver'

Is it possible to force packaging=24.2 for forge?

I think, the problem is that packaging.25.0 requires python 3.13.
But I do no have python 3.13 for android.

Python 3.12.9 was compiled with the help of the following repo
https://github.com/flet-dev/python-android

pyproject.toml for mobile-forge specifies packaging = 24.0.

But the build uses cached packaging-25.0-py3-none-any.whl.metadata (3.3 kB).

meta.yaml for readpdfutils

package:
name: readpdfutils
version: 1.0.5

requirements:
build:
- numpy 1.26.4
host:
- flet-libpdfium 6694

build:
number: 0

requirements:
build:
- numpy 1.26.4
host:
- flet-libpdfium 6694

meta.yaml for flet-libpdfium

package:
name: flet-libpdfium
version: "6694"

source:
url: https://github.com/paulocoutinhox/pdfium-lib/releases/download/6694/android.tgz

build.sh for flet-libpdfium

#!/bin/bash
set -eu

echo $(pwd)

mkdir -p $PREFIX/lib
cp lib/$ANDROID_ABI/libpdfium.so $PREFIX/lib

Steps to reproduce

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior

packaging 24.0 or 24.2 can be used.

Screenshots

No response

Environment

• Operating System:
• Python version:
• Software versions:
  • Briefcase:
  • Toga:
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Logs

Additional context

No response

[ssppkenny]

I was able to force cross environment to use packaging 24.0 version using a hack in cross.py, adding a line after "install"
self.run(
logfile,
(["build-pip"] if build else ["python", "-m", "pip"])
+ [
"install",
"packaging==24.0",
"--disable-pip-version-check",
]