If you’re not familiar with MPR, let me tell you that it’s a fork of Arch Linux‘s AUR (Arch User Repository) designed to work on Debian GNU/Linux and derivatives like Ubuntu, Linux Mint or Pop!_OS Linux. Just like AUR, the MPR packages use the classic PKGBUILD shell script to provide build information required to build the packages.
In other words, MPR, which was launched a few months ago, will help you install third-party packages (or newer versions of packages) that aren’t available in the software repositories of your Debian or Ubuntu-based distribution.