Added a few lines to document the main difference between maturin and setuptools-rust as far as building manylinux-compliant wheels is concerned.

Added newfragment

guide/src/building_and_distribution.md

@@ -71,7 +71,7 @@ The PyO3 ecosystem has two main choices to abstract the process of developing Py
 - [`maturin`] is a command-line tool to build, package and upload Python modules. It makes opinionated choices about project layout meaning it needs very little configuration. This makes it a great choice for users who are building a Python extension from scratch and don't need flexibility.
 - [`setuptools-rust`] is an add-on for `setuptools` which adds extra keyword arguments to the `setup.py` configuration file. It requires more configuration than `maturin`, however this gives additional flexibility for users adding Rust to an existing Python package that can't satisfy `maturin`'s constraints.
 
-Consult each project's documentation for full details on how to get started using them and how to upload wheels to PyPI.
+Consult each project's documentation for full details on how to get started using them and how to upload wheels to PyPI. It should be noted that while `maturin` is able to build [manylinux](https://github.com/pypa/manylinux)-compliant wheels out-of-the-box, `setuptools-rust` requires a bit more effort, [relying on Docker](https://setuptools-rust.readthedocs.io/en/latest/building_wheels.html) for this purpose.
 
 There are also [`maturin-starter`] and [`setuptools-rust-starter`] examples in the PyO3 repository.
 

guide/src/getting_started.md

@@ -23,7 +23,7 @@ PYTHON_CONFIGURE_OPTS="--enable-shared"
 
 ### Building
 
-There are a number of build and Python package management systems such as [`setuptools-rust`](https://github.com/PyO3/setuptools-rust) or [manually](https://pyo3.rs/latest/building_and_distribution.html#manual-builds). We recommend the use of `maturin`, which you can install [here](https://maturin.rs/installation.html). It is developed to work with PyO3 and provides the most "batteries included" experience. `maturin` is just a Python package, so you can add it in the same you already install Python packages.
+There are a number of build and Python package management systems such as [`setuptools-rust`](https://github.com/PyO3/setuptools-rust) or [manually](https://pyo3.rs/latest/building_and_distribution.html#manual-builds). We recommend the use of `maturin`, which you can install [here](https://maturin.rs/installation.html). It is developed to work with PyO3 and provides the most "batteries included" experience, especially if you are aiming to publish to PyPI. `maturin` is just a Python package, so you can add it in the same you already install Python packages.
 
 System Python:
 ```bash

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+Added a few lines to document the main difference between maturin and setuptools-rust as far as building manylinux-compliant wheels is concerned.