[BUG] Unable to resolve reference 'UnityEditor.iOS.Extensions.Xcode' on Windows

[DominatorDuck]

[REQUIRED] Please fill in the following fields:

• Unity editor version: 2020.1.11f1
• External Dependency Manager version: 1.2.161
• Source you installed EDM4U: .unitypackage
• Features in External Dependency Manager in use: Android, ResolverVersionHandler
• Plugins SDK in use: None
• Platform you are using the Unity editor on: Windows

[REQUIRED] Please describe the issue here:

Given a vanilla 3D project in Unity 2020.1.11f1, upon pressing play I get the following error log:

Assembly 'Packages/com.google.external-dependency-manager/ExternalDependencyManager/Editor/Google.IOSResolver_v1.2.161.dll' will not be loaded due to errors:
Unable to resolve reference 'UnityEditor.iOS.Extensions.Xcode'. Is the assembly missing or incompatible with the current platform?
Reference validation can be disabled in the Plugin Inspector.

Steps to reproduce:

• Open a Unity project (in Unity 2020.1.11f1) with the External Dependency Manager package.
• Press the play button.
• Notice the error log.

Notes:

• To create this project I originally made a project for Unity version 2019.4.8f1 and the upgraded it to 2020.1.11f1.
• The error does no occur with the very same project in Unity 2019.4.8f1.
• The only non-default package in the project is the External Dependency Manager.
• The Unity 2020.1.11f1 installation has only Windows (IL2CPP) and Android Build support.
• External Dependency Manager settings are as they come out of the package installation.
• Enabling Verbose Logging does not seem to give any more relevant information.
• Changing Build platform (from Windows to Android) seems to have no effect on the bug.

Please answer the following, if applicable:

What's the issue repro rate? 100%

What happened? How can we make the problem occur?

The Assembly 'Packages/com.google.external-dependency-manager/ExternalDependencyManager/Editor/Google.IOSResolver_v1.2.161.dll' fails to load.

You can reproduce the issue by following the repro steps with the proper Unity installation by using this sample project:
https://drive.google.com/file/d/1llavcZxSVk7icuCpLv65QPrnjgV81u93/view?usp=sharing

[google-oss-bot]

This issue does not have all the information required by the template. Looks like you forgot to fill out some sections. Please update the issue with more information.

[arcv]

For quick fix, you can install "iOS Build Support" module from Unity Hub. That fixes the issue.

[google-oss-bot]

Hey @DominatorDuck. We need more information to resolve this issue but there hasn't been an update in 5 weekdays. I'm marking the issue as stale and if there are no new updates in the next 5 days I will close it automatically.

If you have more information that will help us get to the bottom of this, just add a comment!

[DominatorDuck]

Thanks for the comment, @arcv, that certainly works as a temporary fix.
@cynthiajoan, I noticed you marked the tread as in need of info, can you please let me know what info I can provide to help solve the issue.

[vimanyu]

Hi @DominatorDuck,
Thanks for raising this issue. Newer versions of Unity have stricter checks on inspecting dependent libraries and that is why you are noticing this in Unity 2020. Does this error block the build altogether?

I am flagging this as a bug for us to follow on.

[DominatorDuck]

Hi @vimanyu.
Thanks for coming back on this.
The error does not block the build, it just appears every time you build or run the game - so it shows up often enough, but it's not of the breaking stuff variety.
Other than the error being logged, nothing else seems to be broken or affected.