Composer is a package manager not in the same sense as Yum or Apt are. Yes, it deals with "packages" or libraries, but it manages them on a per-project basis, installing them in a directory (e.g. vendor) inside your project.
The pacman package manager is one of the major distinguishing features of Arch Linux . It combines a simple binary package format with an easy-to-use build system. The goal of pacman is to make it possible to easily manage packages, whether...