We are trying to acces `SiteDefinition.Current` at the time of `AfterInstall`. What we need is `SiteUrl` and `Id` but it seems that at the time of this event they are not available.

How can we postpone the calling of `AfterInstall` or otherwise, could we attach an event listener in `AfterInstall` that can later in the pipeline provide us the data?

Update:

From what I can see in the documentation and from here (enumerating the order of the execution of dependencies), decorating the class like the following should have EPiServer.Web initialized, and  by extent, SiteDefinition.Current.

[InitializableModule]
[ModuleDependency(typeof(Web.InitializationModule))]
public class ModulePackageInitializer : PackageInitializer

I first add the following attributes to the class with no results.

[InitializableModule]
[ModuleDependency(typeof(EPiServer.Packaging.PackageInitializer))]
public class ModulePackageInitializer : PackageInitializer

Adding a event handler to the InitComplete still doesn't get the values:

public override void Initialize(InitializationEngine context)
{
    base.Initialize(context);
    context.InitComplete += InitCompleteHandler;
    [...]