Compiling code that depends on windows.d results in these compiler messages: C:\D\dmd2\windows\bin\..\..\src\druntime\import\core\sys\windows\windows.d(140): C-style function pointer and pointer to array syntax is deprecated. Use 'function' to declare function pointers C:\D\dmd2\windows\bin\..\..\src\druntime\import\core\sys\windows\windows.d(2039): C-style function pointer and pointer to array syntax is deprecated. Use 'function' to declare function pointers C:\D\dmd2\windows\bin\..\..\src\druntime\import\core\sys\windows\windows.d(2538): C-style function pointer and pointer to array syntax is deprecated. Use 'function' to declare function pointers C:\D\dmd2\windows\bin\..\..\src\druntime\import\core\sys\windows\windows.d(3061): C-style function pointer and pointer to array syntax is deprecated. Use 'function' to declare function pointers
You're right, there's an ancient 'windows.d' in the download. It just shouldn't exist. If you delete src\druntime\import\core\sys\windows\windows.d everything should work (it should be using the windows.di file).
Fixed the download zip.