Re: detectOs template in for loop

[jyapayne]

This is, unfortunately, not possible at the moment with the way the template is 
written. You can work around this, however, with the following macro:
    
    
    import macros
    import distros
    
    macro findOS*(): Distribution =
      var body = newNimNode(nnkStmtList)
      
      # Mac is later in the enum than Posix, and
      # Mac is technically posix, so this is needed
      # to properly detect a Mac
      body.add(
        quote do:
          if detectOS(MacOSX):
            return Distribution.MacOSX
      )
      
      for distro in Distribution:
        let distLit = ident($distro)
        body.add(
          quote do:
            if detectOS(`distLit`):
              return Distribution.`distLit`
        )
      result = quote do:
        (proc (): Distribution = `body`)()
    
    echo findOS()
    
    
    Run