provide racket/base for repl

brag/brag/codegen/sexp-based-lang.rkt

@@ -88,6 +88,7 @@
                      syntax/strip-context))
 
 (provide rules
+         (except-out (all-from-out racket/base) #%module-begin)
          (rename-out [my-module-begin #%module-begin])
          #%top-interaction #%top #%app #%datum)