Schemix was "a Scheme system implemented as a patch to the Linux kernel ... for exploration of the Linux kernel and for rapid, interactive prototyping of Linux

Schemix was "a Scheme system implemented as a patch to the Linux kernel ... for exploration of the Linux kernel and for rapid, interactive prototyping of Linux drivers and other new kernel features" http://www.abstractnonsense.com/schemix/ http://www.abstractnonsense.com/schemix/ But Schemix has been inactive since 2003.