HybridChunker not available with just docling as dependency

[sanmai-NL]

Bug

Contrary to the docs, HybridChunker is not available with the docling dependency.

If you are using the docling package, you can import as follows:

from docling.chunking import HybridChunker

Steps to reproduce

Add docling as dependency.

    from docling.chunking import HybridChunker
.venv/lib/python3.12/site-packages/docling/chunking/__init__.py:12: in <module>
    from docling_core.transforms.chunker.hybrid_chunker import HybridChunker
.venv/lib/python3.12/site-packages/docling_core/transforms/chunker/hybrid_chunker.py:18: in <module>
    raise RuntimeError(
E   RuntimeError: Module requires 'chunking' extra; to install, run: `pip install 'docling-core[chunking]'`

Docling version

Docling version: 2.22.0
Docling Core version: 2.18.1
Docling IBM Models version: 3.3.2
Docling Parse version: 3.3.1
Python: cpython-312 (3.12.6)
Platform: macOS-15.3-arm64-arm-64bit

Python version

This section is unnecessary: see previous listing.

[dolfim-ibm]

@sanmai-NL I'm not able to reproduce it. For me it works.

$ python -m venv venv
$ source ./venv/bin/activate
$ pip install docling
$ python
Python 3.12.7 (main, Oct  1 2024, 02:05:46) [Clang 15.0.0 (clang-1500.3.9.4)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> from docling.chunking import HybridChunker
$ docling --version
Docling version: 2.22.0
Docling Core version: 2.18.1
Docling IBM Models version: 3.3.2
Docling Parse version: 3.3.1
Python: cpython-312 (3.12.7)
Platform: macOS-15.3.1-arm64-arm-64bit

[sanmai-NL]

What package manager do you use? We use PDM.

[sanmai-NL]

We don't use pip.

[Fogapod]

Facing same issue with bazel/rules_python. I had to manually specify dependencies alongside docling:

        requirement("tokenizers"),
        requirement("semchunk"),

Works with pip though