- Guile V1.8.7 only has a (module-variable) REPL function.
- Replace previous code using undocumented API calls deprecated
- in Guile V2.
+ Guile V1.8.7 only has a (module-variable) REPL function, however
+ using ly_lily_module_constant ("module-variable") and calling
+ the memoized result is slow.