OSX & linux pacman binaries for devkitPro provided libraries.
Do not attempt to install the files from the .deb manually on non Debian systems, see https://devkitpro.org/wiki/devkitPro_pacman for instructions. Arch, Fedora and Gentoo based distros are covered explicitly there.
On macOS you should be able to just run the .pkg or install it via terminal
sudo installer -pkg /path/to/devkitpro-pacman.pkg -target /
For debian based systems
sudo dpkg -i devkitpro-pacman.deb
This command will also work on WSL but a symlink may need to be created first
sudo ln -s /proc/self/mounts /etc/mtab