On Thu, Feb 14, 2013 at 2:53 PM, Joachim Breitner <mail@joachim-breitner.de> wrote:

I don't think having FFI far down the stack is a problem. There are lots of pure data types we'd like in the "pure data" layer (e.g. bytestring) that uses FFI. As long as the I/O layer itself (System.IO, the I/O manager, etc) doesn't get pulled in there's no real problem in depending on the FFI.