nim.cfg: how to have conditional flags to depend on compiler version?

[timothee]

in nim code we can use stuff like: 
    
    
    when (NimMajor, NimMinor, NimPatch) > (0, 18, 0):
      import sugar
    else:
      import future
    
    
    Run

but how about in nim.cfg ?

eg, /Users/timothee/git_clone/nim/Nim/config/nim.cfg shows: 
    
    
    @if release or quick:
      obj_checks:off
      @if nimHasNilChecks:
        nilchecks:off
      @end
    @end
    
    @if unix:
     ..
    @end
    
    
    Run

but how to make following work? 
    
    
    @if NimPatch >= 1
      hint[Foo]=on
    @end
    
    
    Run

I'd really love to just be able to use nimscript (nims) instead of nim.cfg, but 
that runs into: 
[https://github.com/nim-lang/Nim/issues/8235](https://github.com/nim-lang/Nim/issues/8235)
 
[https://github.com/nim-lang/Nim/pull/8233](https://github.com/nim-lang/Nim/pull/8233)
 (unmerged because PR still needs fixing)

if it's not possible, probably not worth adding support for it in nim.cfg since 
nims is better suited (pending above issues), however if it is possible, I'd 
like to know how to