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inno-setup

Modifying an application with setup.exe without access to slice files

The disk spanning installer for our software has the option to download extra components from the web. For people to be able to download and install additional components after installing the software, I've added the AppModifyPath directive and copy the installer to the application path:

[Setup]
AppModifyPath="{srcexe}" /modify=1
...
[Files]
Source: "{srcexe}"; DestDir: "{app}"; Flags: external

It turns out that the setup.exe requires the setup-*.bin files, which because of their size, I'd like to avoid copying into the application folder and don't really need as I only want to offer to add and remove downloadable components.

Is there a way to run the setup.exe /modify=1 without needing access to the setup-*.bin data files, or create a separate executable that can be used to modify the original installation?

Solution

  • I agree with what @Slappy wrote.

    Though indeed, you can create a "separate executable that can be used to modify the original installation". Just implement another Inno Setup installer script with the same AppId and install it along with your application.

    Make sure the uninstaller of your modification installer is able to uninstall complete application. It should on its own. Just make sure you have no custom uninstall code there that would cause troubles.