SoLoad: Enough FFI to get the job done.

Process based pseudo FFI. Fucking awesome. I had been doing similar stuff with tclsh and wish via snow’s tk package to take advantage of TCL libraries, but this looks to be much much nicer and provides access to C libs.
If you don’t need callbacks or worry much about continuations, this should save a great deal of headache. And if you do, well, a few scheme implementations support SWIG anyway.

SoLoad intro
SoLoad basic
SoLoad intermediate
SoLoad at Launchpad
SoLoad wiki