+ use the `raco-commands` key in "info.rkt" to create new `raco myprog ยทยทยท` 
commands

+ use `racket/cmdline` to parse the input options to these commands.




> On 12 Aug 19, at 7:34 AM, Dmitry Pavlov <dpav...@iaaras.ru> wrote:
> 
> With C, everyone is happy with macros and built-in options, e. g.
> 
> gcc -O3 -DREAL=double -DDATABASE=POSTGRES prog.c
> 
> 
> The best idea for Rackey I have so far is to use good old environment 
> varibles, e. g.
> 
> REAL=double BACKEND=Racket raco make myprog.mylang
> 
> But it has its obvious drawbacks. What do I do instead?

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