running a command in a directory using std.process

[Benjamin Thaut]

As far as I can tell std.process can only run commands in the working 
directory of the currently executing function. I want to execute a 
certain program inside a subdirectory on windows and can't get it to work:

myproject
  |- subdir

So my executable has "myproject" as working directory. And I want to 
execute "dmd" with "subdir" as working directory.
-- 
Kind Regards
Benjamin Thaut