I have an InstallShield .exe that 'wraps' an MSI installer. I can pass arguments to the MSI installer like this: /v"..." For example, to do a silent install: p4inst64.exe /S /v"/qn". The MSI ...
I have to install a set of development tools that includes MSYS 1.0.11 on a bunch of Windows XP boxes. Every other tool is built with MSI or can simply be untarred or unzipped to the relevant install ...