PyPI sdist package and conda-forge recipe

[oschwengers]

Hi @tweedge , thanks for this wonderful Python library! I'd like to use it in one of our Python bioinformatics applications (oschwengers/bakta). As the main distribution channel of this software is Conda, I'd need unishox2-py3 to be available at conda-forge. I'd be happy to write a recipe for it based on your PyPI package.

However, I'd need an sdist package on PyPI in order create a recipe via Conda`s grayskull tool:

$ grayskull pypi unishox2-py3
#### Initializing recipe for unishox2-py3 (pypi) ####

Recovering metadata from pypi...
Traceback (most recent call last):
  File "/home/oliver/tmp/conda-forge-unishox2-py3/conda/bin/grayskull", line 10, in <module>
    sys.exit(main())
  File "/home/oliver/tmp/conda-forge-unishox2-py3/conda/lib/python3.10/site-packages/grayskull/__main__.py", line 193, in main
    generate_recipes_from_list(args.pypi_packages, args)
  File "/home/oliver/tmp/conda-forge-unishox2-py3/conda/lib/python3.10/site-packages/grayskull/__main__.py", line 215, in generate_recipes_from_list
    recipe, config = create_python_recipe(
  File "/home/oliver/tmp/conda-forge-unishox2-py3/conda/lib/python3.10/site-packages/grayskull/__main__.py", line 249, in create_python_recipe
    GrayskullFactory.create_recipe(
  File "/home/oliver/tmp/conda-forge-unishox2-py3/conda/lib/python3.10/site-packages/grayskull/base/factory.py", line 31, in create_recipe
    GrayskullFactory.REGISTERED_STRATEGY[repo_type.lower()].fetch_data(
  File "/home/oliver/tmp/conda-forge-unishox2-py3/conda/lib/python3.10/site-packages/grayskull/strategy/pypi.py", line 60, in fetch_data
    update_recipe(recipe, config, sections or ALL_SECTIONS)
  File "/home/oliver/tmp/conda-forge-unishox2-py3/conda/lib/python3.10/site-packages/grayskull/strategy/pypi.py", line 470, in update_recipe
    metadata = get_metadata(recipe, config)
  File "/home/oliver/tmp/conda-forge-unishox2-py3/conda/lib/python3.10/site-packages/grayskull/strategy/pypi.py", line 343, in get_metadata
    sdist_metadata, pypi_metadata = get_origin_wise_metadata(config)
  File "/home/oliver/tmp/conda-forge-unishox2-py3/conda/lib/python3.10/site-packages/grayskull/strategy/pypi.py", line 227, in get_origin_wise_metadata
    pypi_metadata = get_pypi_metadata(config)
  File "/home/oliver/tmp/conda-forge-unishox2-py3/conda/lib/python3.10/site-packages/grayskull/strategy/pypi.py", line 270, in get_pypi_metadata
    raise AttributeError(f"There is no sdist package on pypi for {config.name}.")
AttributeError: There is no sdist package on pypi for unishox2-py3.

Also, would it be OK to mention you in the Conda package as the maintainer? Any help would be highly appreciated! Best regards!