Wrong version pinning of `pypdfium2`, at least in Termux

[Manamama]

See: pypdfium2-team/pypdfium2#332 (comment) and thereabove for the details.

If pinned: Collecting pypdfium2!=4.30.1,<5.0.0,>=4.30.0 (from docling) then errors:

Collecting docling
  Obtaining dependency information for docling from https://files.pythonhosted.org/packages/a6/b2/54ed8c9ebc2571d5058c6ec435f1819eb58bfcab8ef95a99fa263b4fbc60/docling-2.69.1-py3-none-any.whl.metadata
  Using cached docling-2.69.1-py3-none-any.whl.metadata (11 kB)
  Obtaining dependency information for docling from https://files.pythonhosted.org/packages/73/99/bf8fe24158dccb0c5f54f8f3596563be965ef29872719108956047d4adf5/docling-2.69.0-py3-none-any.whl.metadata
  Using cached docling-2.69.0-py3-none-any.whl.metadata (11 kB)
  Obtaining dependency information for docling from https://files.pythonhosted.org/packages/d5/a5/08716dcbf93e350f0595b58ece138b3b78606ef2f6a5a5058b1642cfe142/docling-2.68.0-py3-none-any.whl.metadata
  Using cached docling-2.68.0-py3-none-any.whl.metadata (11 kB)
Collecting pypdfium2!=4.30.1,<5.0.0,>=4.30.0 (from docling)
  Using cached pypdfium2-4.30.0.tar.gz (140 kB)
  Running command Preparing metadata (pyproject.toml)
  /data/data/com.termux/files/usr/lib/python3.13/site-packages/wheel/bdist_wheel.py:4: FutureWarning: The 'wheel' package is no longer the canonical location of the 'bdist_wheel' command, and will be removed in a future release. Please update to setuptools v70.1 or later which contains an integrated version of this command.
    warn(
  Traceback (most recent call last):
    File "/data/data/com.termux/files/usr/lib/python3.13/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 389, in <module>
      main()
      ~~~~^^
    File "/data/data/com.termux/files/usr/lib/python3.13/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 373, in main
      json_out["return_val"] = hook(**hook_input["kwargs"])
                               ~~~~^^^^^^^^^^^^^^^^^^^^^^^^
    File "/data/data/com.termux/files/usr/lib/python3.13/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 175, in prepare_metadata_for_build_wheel
      return hook(metadata_directory, config_settings)
    File "/data/data/com.termux/files/usr/lib/python3.13/site-packages/setuptools/build_meta.py", line 380, in prepare_metadata_for_build_wheel
      self.run_setup()
      ~~~~~~~~~~~~~~^^
    File "/data/data/com.termux/files/usr/lib/python3.13/site-packages/setuptools/build_meta.py", line 317, in run_setup
      exec(code, locals())
      ~~~~^^^^^^^^^^^^^^^^
    File "<string>", line 161, in <module>
    File "<string>", line 152, in main
    File "/data/data/com.termux/files/usr/tmp/pip-install-040787r0/pypdfium2_cc6a382e2d014b7aab4facd8027b76c2/setupsrc/pypdfium2_setup/packaging_base.py", line 610, in parse_pl_spec
      raise RuntimeError(f"No pre-built binaries available for {Host}. You may place custom binaries & bindings in data/sourcebuild and install with `{PlatSpec_EnvVar}=sourcebuild`.")
  RuntimeError: No pre-built binaries available for <Host: android aarch64>. You may place custom binaries & bindings in data/sourcebuild and install with `PDFIUM_PLATFORM=sourcebuild`.
  error: subprocess-exited-with-error

If not pinned:

Special pip install, verbose, upgrade-strategy=only-if-needed etc: 
Using pip 26.0.1 from /data/data/com.termux/files/usr/lib/python3.13/site-packages/pip (python 3.13)
Looking in indexes: https://pypi.org/simple, https://download.pytorch.org/whl/cpu, https://termux-user-repository.github.io/pypi/
Requirement already satisfied: pypdfium2 in /data/data/com.termux/files/usr/lib/python3.13/site-packages (5.5.0)
	Command being timed: "pip install -U --no-build-isolation --upgrade-strategy=only-if-needed -v --retries 10 --resume-retries 10 --timeout 60 --no-binary :all --extra-index-url https://termux-user-repository.github.io/pypi/ pypdfium2"

• installs fine.

So the Droid users must yet again pip install yours in stages, starting from https://github.com/pypdfium2-team/pypdfium2 and then 'pandasor (yet again) togit clone` yours and unpin most dependencies by hand, to make it work:

pip install -U accelerate beautifulsoup4 certifi defusedxml docling-core docling-ibm-models filetype huggingface_hub lxml marko openpyxl pandas pillow pluggy polyfactory pydantic pydantic-settings pylatexenc pypdfium2 python-docx python-pptx rapidocr requests rtree scipy tqdm typer docling-parse

and only then:
pip install -U pandas
pip install -U docling --no-deps
or a version thereof.