Qt Installer Framework: call function after component has been dearchived

SeeRich

Hello! I am using QTIFW for a Qt application on Windows 11. My project is built using MSVC and I have to bundle + run the vc_redist.x64.exe with my application (only if not installed already).

I have seen posts using something like:

component.addElevatedOperation("Execute", "{0,1602,1638}", redistPath, "/quiet", "/passive", "/norestart");

to add an installation operation to the component. However, I want to do more than this:

Before installing the redist component, I currently have a message box that pops up alerting the user that the redist component installation is required. This is all working. However, I am using:

function Component() {
    installer.installationFinished.connect(this, Component.prototype.doVcInstall);
}

To actually call the redist installer/updater. The downside to this approach is that once the installation is finished, my app component has already been installed and if the redist reports an error, I would need to uninstall everything. Otherwise, my app could have undefined behavior.

I have two main questions:

Is it possible to specify the order of component installation? I would like the redist to run first and if not successful, cancel the installation.
Is it possible to call a function in the components installscript.qs AFTER the component has been dearchived. Currently, I can't call the vc_redist.x64.exe until the installation has finished because it is still in the component archive. Another option, is it possible to manually invoke the dearchive operation from installscript.qs?