Godot Mono iOS export can't be compiled with Xcode 12 or later: "Cannot load assembly (refonly): 'Xamarin.iOS'"

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Godot version:
v3.2.3.stable.mono.official

OS/device including version:
MacOS Catalina 10.15.7, Macbook Pro 15" 2017,
.NET core SDK 2.1.809, Xamarin iOS 14.0.0.0

Issue description:
When I try to export for iOS, I get these errors:

Cannot load assembly (refonly): 'Xamarin.iOS'.
Cannot load one of the dependencies for the assembly: 'System.Net.Http'.
Cannot load one of the dependencies for the assembly: 'netstandard'.
Cannot load one of the dependencies for the assembly: 'GodotSharp'.

The Xcode project gets created, but I cannot build it to test on either the simulators or my iOS device.
I didn't have this problem yesterday, before updating to Xcode 12.

Steps to reproduce:

1. Create a mono project
2. Export to iOS

Minimal reproduction project:
test.zip

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Any ideas? @neikeq

[neikeq]

Unfortunately I lost access to the mac I was borrowing so I'm not being able to work on the iOS port right now. I plan to buy one of the new arm macbooks once they come out and get back to this.

[mars3142]

@neikeq You've set the milestone to 4.0. Is there a visible roadmap for v4.0? Because right now no deployment of Godot mono is possible with the latest stable build in Xcode 12.

[neikeq]

Adding it to the 4.0 milestone doesn't mean it won't be fixed in a future 3.2.x release. I will talk about my roadmap in the next devlog. I've bough one of the new arm macbooks so I will be able to get back to iOS issues in December.

[sonenko]

reproduced same issue

[ksvslk]

Have the same issue. Is this planned for 3.2.4 or it is impossible to build for iOS for now?

[Calinou]

Have the same issue. Is this planned for 3.2.4 or it is impossible to build for iOS for now?

This issue isn't on the roadmap for 3.2.4, so there's no guarantee it will be fixed by the time 3.2.4 is released.