Some new C# features do not work in Unity

[mikoro]

Specifically this:

            [AttributeUsage(AttributeTargets.All, AllowMultiple = true)]
            public sealed class CNodeAttribute : Attribute
            {
                public string Kind { get; init; } = string.Empty;

                public string Platform { get; init; } = string.Empty;

                public string Location { get; init; } = string.Empty;
            }

will cause:

error CS0518: Predefined type 'System.Runtime.CompilerServices.IsExternalInit' is not defined or imported

This worked in Unity with the previous version. Replacing init with set seems to work.

[lithiumtoast]

Thanks!