MAKEMSI quickly and reliably creates MSI files in a non-programmatic way\Building or Updating MSIsRepackaging - Converting an EXE to MSIWrap Existing InstallersNSIS Setup (wrap installation)

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NSIS Setup (wrap installation)

You can generally recognise NSIS (nullsoft) based installers:

Silent Command Line

This installer only has rudimentary command line support with the switches being case sensitive and no error handling if NSIS doesn't like what you used:

• /S
  This switch generally makes it unattended but user authoring errors can ruin this (as its treated more as a suggestion). If it fails I suggest you supply this feedback to the author.

  This switch also applies to the generated "uninstall.exe".

• /D=directory
  This switch sets the to set installation path. It must be the last switch as it can't taked quoted values (just type the value in spaces and all)!

  If you get it wrong NSIS will continue and use its default.

Some other facts:

• NSIS bug: The "/S" is not silent if the product is already installed. It pauses and displays a dialog!

• You can test for a return code zero on the install.

• The generated "uninstall.exe" terminates before the uninstall completes, so its return code can't be checked. If you test return code you are only validating that you invoked the uninstall.

• Because "uninstall.exe" runs async you need to use the "WRAPINST_UNINSTALL_VALIDATION_WAIT" option.

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