Re: Lightgbm package

[Thomas Klausner <wiz%gatalith.at@localhost>]

On Thu, Feb 15, 2024 at 08:18:23AM +0100, Thomas Klausner wrote:
> On Wed, Feb 14, 2024 at 05:11:52PM -0700, Brook Milligan wrote:
> > I am trying to package the python lightgpm (https://pypi.org/project/lightgbm/) and am not sure how to proceed.  The install directions say to use the following command:
> > 
> > 	pip install --no-binary lightgbm lightgbm
> > 
> > This works (see transcript file attached below) but it seems not to integrate with pkgsrc particularly well.  There is no setup.py file, so egg.mk does not work.  Similarly, wheel.mk does not work.
> 
> It's always good to provide more details when something "doesn't work".
> 
> In this case, I started from scratch and added wheel.mk. When building, I see:
> 
> ===> Building for py311-lightgbm-4.3.0
> * Building wheel...
> 
> Traceback (most recent call last):
>   File "/usr/pkg/lib/python3.11/site-packages/pyproject_hooks/_impl.py", line 321, in _call_hook
>     raise BackendUnavailable(data.get('traceback', ''))
> pyproject_hooks._impl.BackendUnavailable: Traceback (most recent call last):
>   File "/usr/pkg/lib/python3.11/site-packages/pyproject_hooks/_in_process/_in_process.py", line 77, in _build_backend
>     obj = import_module(mod_path)
>           ^^^^^^^^^^^^^^^^^^^^^^^
>   File "/usr/pkg/lib/python3.11/importlib/__init__.py", line 126, in import_module
>     return _bootstrap._gcd_import(name[level:], package, level)
>            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>   File "<frozen importlib._bootstrap>", line 1204, in _gcd_import
>   File "<frozen importlib._bootstrap>", line 1176, in _find_and_load
>   File "<frozen importlib._bootstrap>", line 1126, in _find_and_load_unlocked
>   File "<frozen importlib._bootstrap>", line 241, in _call_with_frames_removed
>   File "<frozen importlib._bootstrap>", line 1204, in _gcd_import
>   File "<frozen importlib._bootstrap>", line 1176, in _find_and_load
>   File "<frozen importlib._bootstrap>", line 1140, in _find_and_load_unlocked
> ModuleNotFoundError: No module named 'scikit_build_core'
> 
> ERROR Backend 'scikit_build_core.build' is not available.
> *** Error code 1
> 
> This tells us what needs to be installed without even looking at
> pyproject.toml where you see the same information in the
> [build-system] section.
> 
> This build dependency is currently not packaged, it seems to be the
> successor for py-scikit-build. I'll take a look at packaging it.

I've packaged devel/py-scikit-build-core and also made a package for
wip/py-lightgbm - it doesn't come with tests so please try it out and
import it if you find it useful.
 Thomas