IIRC the installer does let you choose some components like whether to put the icon on the desktop or install the start menu icons if you click Advanced.
The only thing that occurs to me is whether costing can be completely disabled and instead values for the components can be supplied manually at installer build time.
The other option is of course to put all the files into a zip file, but I dont really want to do that as it makes it difficult for people to monkey patch the install, something that is often used by calibre developers to get people to test small changes easily.
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