convert environment to module `name'

[Matt Wette]

I am working on “Compiling to the Virtual Machine”.  Guile passes an `env’ 
object to the parser/compiler which is apparently the module object for the 
desired execution environment.

To reference top-level variables in (external) tree-il I am using

        '(toplevel foo)

but I guess I should be using

        '(@ (mod from env) foo)

I don’t know how to get the list-symbol path “mod from env” from the env 
argument. Any ideas?

The following generates an error:

        `(@ ,env foo)

where env in write format looks like 

        <directory (guile-user) 10c8fbbd0>

Matt