Check installed Windows Server Features with NSIS

I'm trying to install a custom build software on Windows Server 2008R2, 2008 and 2003. The software needs the "Desktop-Experience" feature from Windows to be installed.

I know I can check with servermanagercmd.exe (even though it's kind of cumbersome) in 2003 and 2008 - unfortunately, this does no longer work in 2008R2 (64bit) from inside an NSIS installer - it does work if I just run the command. Called from the installer, I'm getting a "servermanagercmd.exe is not recognized as an internal or external command, operable program or batch file."-error, even if I'm setting the working directory to c:\windows\system32 (yes, on a 64 bit machine, but there's no servermanagercmd.exe in sysWOW64). Here's the line of code inside NSIS:

nsExec::ExecToStack 'servermanagercmd.exe -query | findstr "Desktop-Experience"'

In 2008R2, I thought the situation would actually improve, as PowerShell is now installed by default. However, when trying to get the information, I need to first load the ServerManager module inside PowerShell - but this module is not available for reading for Trusted Installer . So I'm facing the same situation again: If I'm running my powershell command from a command line, it works, but not from inside the NSIS installer. Again, here's the line of code inside NSIS:

nsExec::ExecToStack 'powershell.exe "& "Import-Module ServerManager"'

The three(!) (double)quotation marks are actually correct.

So, does anybody know of a way to check whether Desktop-Experience is installed (and install it if not) in Windows Server 2008R2 from inside an NSIS installer? The solu开发者_运维知识库tion does not need to work on Server2003 or 2008, because the string parsing from servermanagercmd.exe works there.

---

Are you using the macros in x64.nsh to turn off WOW64 redirection? (Or use "$windir\sysnative\servermanagercmd.exe")