We really don't need any more binary package managers - that should be the responsibility of the platform you're deploying on. dpkg/rpm/etc on Linux systems, MSI on Windows, APK on Android, etc.
One reason I love package managers, is that as developer I don't want to produce a dpkg/rpm/tgz/apk/msi/ipa/p5i/depot multiplied by the different locations of include files, libraries, documentation across the said OS.
Specially in commercial software.