[CMake] cpack/nsis behavior

[Clinton Stimpson]

Hi,

I've got this case where I'm using cpack to create nsis packages with a set of 
components that I want packaged.

If I run the installer, things work.
But, if I run the installer a second time (without doing an uninstall first), 
it doesn't do anything.  So, if one had manually removed files, the installer 
doesn't put them back.

I suspect its because there are components, and it assumes it can skip things 
if the component was already installed before (it is saved in the registry 
what components were installed).

Is there a way to force it to install files again?  Much like a repair 
functionality would do?

I tried with the cmake installer, and it installs files again just fine.  I 
suspect that is because there are no components in that installer.

Thanks,
Clint