Hi,
I've been working on a PL/scheme project and after making some progress
on the framework, decided to release it under pgFoundry.
PL/scheme is a PostgreSQL procedural language handler for Scheme
programming language released under BSD license. PL/scheme uses Guile in
the background as its Scheme interpreter. With lots of builtin SRFIs,
GOOPS framework and complete R5RS compliancy of Guile, PL/scheme will
power up PostgreSQL procedures in your favorite programming language!
At the moment, PL/scheme only supports some primary (simple) types:
NULL, boolean, integer, float, text, etc... (Complex, pseudo and domain
types are missing.) I'll try to expand its available type handling scope
and (especially SPI) functionality by the time.
You can find more information about project from the website at
http://plscheme.projects.postgresql.org/
Regards.