pacx-0.5.2 is not a library.
Pacx
Pacx is a wrapper for package managers. It allows you to configure your package managers in Lua and use them in a unified way.
Installation
Cargo
GitHub Releases
You can download the binary from the releases page.
Usage
First, you need to create configuration files for your package managers. Please refer to the wiki for more information.
Then, you can use the pacx command like this: