I thought I knew how to do this, i.e., if I wanted to have a certain Racket language in my org-mode code block, just do something like this:
#+begin_src scheme :session sbh1 :results output
#lang simply-scheme
(se (butlast (bf "this"))
"world")
#+end_src
but I get errors
#+RESULTS:
#+begin_example
stdin::837: read: `#lang` not enabled
context...:
read-lang31
. . .
Going over to the REPL
racket@> #lang racket
stdin::438: read-syntax: `#lang` not enabled
context...:
read-lang31
read-syntax3
. . .
I thought this was just a simple matter, but apparently not. What can I do to get these Racket languages working?
LB