Set permanent on a component programatically

[Nejchy]

Is it possible to set permanent on a component programatically in a Installscript or VBScript ?

Thank you for your help?

[cbragg]

During installation? or do you have an installation already installed you need to patch up?

[Nejchy]

Yes. During installation.

I actually have 2 types of install. Network or local.
If network is selected i would like the components to be permanent.

[cbragg]

Without having to write a custom action to modify tables at runtime (which is doable but a bit hacky) the easiest way to do it is to create two components exactly the same except one is set as permanent and the other isn't. Then all you need to do is to condition these components to install the correct one based on the user's selection

[Nejchy]

I thought of doing that. But I have a file that is 300MB.
And if i create 2 components, this file is added twice in my project.
Or is it possible to add it only once and then use it in 2 components.

Thank you for your answers.