Pacman lite?

Is it possible to build a neutered version of pacman? A pacman lite if you will.... I need to cut down on the dependencies pacman requires. Without key signing and package signing. I would like to only have package building and package management and pull from an http respository. This is for a custom built OS that I would like to use pacman on an ARM SBC. it currently uses rpm as a package manager. I would also like to build them using makepkg. -- Hindi madali ang maging ako