base environments

[alexshinn]

What is the base environment provided by the repl,
scripts, and the result of (scheme-report-environment 7)?

The intention was the base script environment was empty,
scheme-report-environment was (scheme base), and repls
were an implementation-defined superset thereof, but there
are other options and we need to clarify this.

[cowan]

I'm thinking that scheme-report-environment just doesn't make sense any more. I think that scripts and the REPL should both be implementation-dependent supersets of (scheme base) -- indeed, I don't see any point in distinguishing between the two. Both scripting and interaction are environments in which convenience should trump bureaucracy.

R6RS has a procedure environment which accepts multiple arguments which look like import specs, and returns an environment containing the specified names. So (environment) is equivalent to R5RS (empty-environment), (environment '(scheme base)) returns a base environment, and so on. That makes a lot of sense to me.

[alexshinn]

We voted for the original intent as described above.