I’m not sure what happened to Soak, but Soak was a project idea basically the same as this.
Here’s the reddit post: http://www.reddit.com/r/spongeproject/comments/2fs5l2/soak_a_package_manager/
A planning doc, https://docs.google.com/document/d/1xRt5yZ1a69TLtNcIEIUh7hCl--R2stEJzE4qdCgDPh0
Requirements doc Dropbox - soak requirements doc.md - Simplify your life