@couven92 My system is running 64-bit Win 10, and already have VS 2017 installed, as well as Nim 0.17. Your vccexe tool seems couldn't find cl.exe "C:\WINDOWS\system32\cmd.exe" /C "C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall && SET" cl.exe Traceback (most recent call last) vccexe.nim(61) vccexe osproc.nim(578) startProcess os.nim(154) raiseOSError Error: unhandled exception: The system cannot find the file specified. Additional info: Requested command not found: 'cl.exe'. OS error: [OSError]
"C:Program Files (x86)Microsoft Visual Studio 14.0VCvcvarsall" does exist, though.