How do I programmatically interact with the PackageManager?

Hello all,

I'm basically making an editor script that trys to way-over-simplify the process of adding PostProcessing Stack v2 to a project and empty scene. Basically what I want to do, is ask the PackageManager if PostProcessing is installed. If it's not installed, tell it to install it, then once that has been confirmed completed, perform a task. I cannot for the life of me seem to figure out a good way to handle that. Should I be storing requests and polling to see if complete? Is there some built-in timer mechanism, maybe coroutines to wait for ListRequests and the like?

Thanks,
Jim

 

Hi Jimmio92,

These doc links should help give you a good baseline on how to interact with Package Manager outside of the UI

https://docs.unity3d.com/ScriptReference/
(check under UnityEditor > UnityEditor.PackageManager for the a list of the various API calls)

or alternatively a bit higher level
https://docs.unity3d.com/Packages/com.unity.package-manager-ui@1.8/manual/index.html

Look for the Advanced Package topics to review how you manage the manifest.json (project side) to track which packages and version are installed. This doc was last update for the 2018.1 release and some changes were introduced in 2018.2 but the core concepts still apply.

Hope this helps

Thanks
Daniel

 

You provide a way to list the current packages as I read from the documentation, and you provide a way to add a package as I also gathered from the docs. I'm trying to figure out how to request the list, wait for it to be ready, then actually act on it. Should I be polling the status(es) in OnInspectorUpdate or is there a better mechanism with which to catch a list-results-ready-to-read event?

 

I've got it working. I use OnInspectorUpdate to poll to see if IsCompleted is true or not. It's a mess of jumping back and forth, but it works so whatever. Thanks.