add a flag to the compiler to add explicit dependencies

[kurinoku]

Basically there are cases where one could want to dynamically require a folder full of scripts, and without having a way to tell the compiler what to compile regardless of explicit dependencies, one ends up using cheap tricks.

[stchang]

Could you say more about the use case here? Why cant the dependencies be determined from the program?

[sorawee]

I think @kurinoku is referring to https://racket.discourse.group/t/racketscript-dynamically-require-all-racket-files-in-a-directory/379.

[kurinoku]

I have written more about the use case in a comment on #278, but then I sort of start to doubt this should be supported because it's not really good practice to load modules like that, although if you were working with some sort of extension system, it might be of use, where you are not explicitly requiring modules that are supposed to be loaded at runtime.