On Saturday, 24 November 2012 at 21:54:57 UTC, Gor Gyolchanyan wrote: > How about core.sys.windows.c.* ? There is a certain asymmetry in the current state of druntime already: For all the other OSes, core.sys.xyz direclty contains headers for the system libraries, whereas the modules in core.sys.windows actually contain D code. David