rust error: failed to run custom build command for python3-sys

The error message you encountered, "failed to run custom build command for python3-sys," is a common error in Rust projects that use the python3-sys crate. This error typically occurs when the build script for the crate fails to execute properly.

To resolve this issue, you can try the following steps:

1. Make sure you have Python 3 installed on your system. You can check the Python version by running python3 --version in your terminal.

2. Ensure that the python3-sys crate is using the correct Python version. You can specify the Python version by setting the PYTHON environment variable before building your Rust project. For example, if you want to use Python 3.8, you can run the following command before building:

export PYTHON=python3.8

1. If the above steps don't resolve the issue, it's possible that there is a problem with the build script itself. You can try updating the python3-sys crate to the latest version or checking for any known issues or bug reports related to the crate.

Please note that the specific steps to resolve this error may vary depending on your project's configuration and dependencies. If you need further assistance, please provide more details about your project setup and any additional error messages you are encountering.