# PyPI integration code | |
This code is for integrating with PyPI and other compatible indexes. At the | |
moment we have code for: | |
* Downloading packages using `pip` or `repository_ctx.download`. | |
* Interacting with PyPI compatible indexes via [SimpleAPI] spec. | |
* Locking a `requirements.in` or [PEP621] compliant `pyproject.toml`. | |
[PEP621]: https://peps.python.org/pep-0621/ |