RFC: reducing wasted disk space from addon files

[Vincent Povirk]

It hadn't occurred to me to cross-compile a custom action dll.

Would it be possible to skip certain actions like RegisterProduct, so
the files are extracted but the msi isn't actually "installed" at the
end? I'd want to make sure the files aren't accidentally removed when
a new version is installed, or a user pokes around in wine
uninstaller.