Hi,

Attached is a module that can evaluate an expression within a sandbox.
If the evaluation takes too long or allocates too much, it will be
cancelled.  The evaluation will take place with respect to a module with
a "safe" set of imports.  Those imports include most of the bindings
available in a default Guile environment.  See the file below for full
details and a number of caveats.

Any thoughts?  I would like something like this for a web service that
has to evaluate untrusted code.

Andy