I'm looking for a linux package manager for personal project. The main criterium is non-GPL (and it's variants) license. So far I've managed to find that only Slackware's pkgtools meet this rule, but there surely must be others!
I like pkgtools, but I like choice even more ;p
What other - non-GPL - linux package management systems are there? (I assume the list to be short so it's not an open ended question)