I'm running into an issue where I need a separate instance of sass.js per compile, but it appears that sassjs is a singleton.

My use case is that for each file I compile, I cache its directory as a base url and in my custom importer I use that base url to determine the relative path. I'm enclosing that base url in a closure, but anytime I set importer it overrides the previous importer (because sassjs is a singleton) and I'm stuck with the last base url that was set.

Any ideas on how I can get around this? Thanks!