> There was an attempt to port homebrew to linux, but it didn't go far.

Linux already has more package managers than you can shake a stick at. To gain traction on linux, homebrew would have to offer useful features that other package managers don't have. Even then, people are more likely to copy the features into an existing linux package manager.

I don't think people tend to shop around when it comes to package managers; you use whatever your distro provides. If it sucks, you find a better distro or submit patches, depending how involved you are.