build: Use hatchling to package project

[matthewfeickert]

Resolves #8

• Convert packaging from setuptools to hatchling as UMNN is pure-Python.
• Add required dependencies of NumPy and PyTorch.
• Add missing requires-python and correct licence to BSD-3 given

UMNN/LICENSE

Line 1 in 9e489b5

BSD 3-Clause License

Example of working as expected

From the top level of the repo

$ pipx run build --installer uv .
* Creating isolated environment: venv+uv...
* Using external uv from /home/feickert/.pyenv/shims/uv
* Installing packages in isolated environment:
  - hatchling
* Getting build dependencies for sdist...
* Building sdist...
* Building wheel from sdist
* Creating isolated environment: venv+uv...
* Using external uv from /home/feickert/.pyenv/shims/uv
* Installing packages in isolated environment:
  - hatchling
* Getting build dependencies for wheel...
* Building wheel...
Successfully built umnn-1.70.tar.gz and umnn-1.70-py3-none-any.whl
$ python -m tarfile --list dist/umnn-1.70.tar.gz 
umnn-1.70/models/UMNN/MonotonicNN.py 
umnn-1.70/models/UMNN/NeuralIntegral.py 
umnn-1.70/models/UMNN/ParallelNeuralIntegral.py 
umnn-1.70/models/UMNN/UMNNMAF.py 
umnn-1.70/models/UMNN/UMNNMAFFlow.py 
umnn-1.70/models/UMNN/__init__.py 
umnn-1.70/models/UMNN/made.py 
umnn-1.70/models/UMNN/spectral_normalization.py 
umnn-1.70/LICENSE 
umnn-1.70/pyproject.toml 
umnn-1.70/PKG-INFO
$ python -m zipfile --list dist/umnn-1.70-py3-none-any.whl 
File Name                                             Modified             Size
UMNN/MonotonicNN.py                            2020-02-02 00:00:00         1957
UMNN/NeuralIntegral.py                         2020-02-02 00:00:00         2895
UMNN/ParallelNeuralIntegral.py                 2020-02-02 00:00:00         4270
UMNN/UMNNMAF.py                                2020-02-02 00:00:00        10524
UMNN/UMNNMAFFlow.py                            2020-02-02 00:00:00         5656
UMNN/__init__.py                               2020-02-02 00:00:00          258
UMNN/made.py                                   2020-02-02 00:00:00         9945
UMNN/spectral_normalization.py                 2020-02-02 00:00:00         2536
umnn-1.70.dist-info/METADATA                   2020-02-02 00:00:00          298
umnn-1.70.dist-info/WHEEL                      2020-02-02 00:00:00           87
umnn-1.70.dist-info/licenses/LICENSE           2020-02-02 00:00:00         1524
umnn-1.70.dist-info/RECORD                     2020-02-02 00:00:00          905
$ rm -rf dist
$ uv pip install --upgrade .
$ uv pip show umnn
Using Python 3.12.1 environment at: /home/feickert/.pyenv/versions/3.12.1/envs/umnn-dev
Name: umnn
Version: 1.70
Location: /home/feickert/.pyenv/versions/3.12.1/envs/umnn-dev/lib/python3.12/site-packages
Requires: numpy, torch
Required-by:
$ python -c 'import UMNN; print(UMNN)'
<module 'UMNN' from '/home/feickert/.pyenv/versions/umnn-dev/lib/python3.12/site-packages/UMNN/__init__.py'>

[matthewfeickert]

@AWehenkel This is ready for review.

cc @glouppe (hi! 🙂 ) in the event that @AWehenkel doesn't see this and might need to get contacted other ways.

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Context: This is required to get sbi on conda-forge. c.f. Issue #8 and linked Issues for details.

[matthewfeickert]

Set to 1.70 given https://pypi.org/project/UMNN/1.70/ exists and so assuming that release corresponds to 9e489b5.