PatchFunctions.UpdateWrapper NotImplementedException on MacOS

[AqlaSolutions]

This exception occurs when launching from Rider:

We don't have this problem on Windows or inside asp.net linux docker containers.

The exception occurs even when launching without debugging.

The patch code:

[HarmonyPatch(typeof(ClassName), "MethodName")]
[UsedImplicitly]
static class Patch
{
    [UsedImplicitly]
    [HarmonyPrefix]
    static bool Prefix(ClassName __instance)
    {
        if (__instance.Property is AnotherClass { AnotherProperty: true })
            return false;
        return true;
    }
}

Runtime environment (please complete the following information):

• OS: MacOS Ventura 13.3.1 (a)
• .NET version 7.0.402
• Harmony version 2.3.3 (thin)

Our host application is ASP.NET Web Api app.

[pardeike]

Does this happen with the non-thin version too? If so, you are not supplying the correct dependencies.

[pardeike]

For reference, I am as I type, using Harmony 2.3.3 on my MacBook Air M2 with RimWorld just fine.

[AqlaSolutions]

The non-thin version doesn't work for us (exception when debugging from Rider on Windows). https://github.com/pardeike/Harmony/issues/585

What are the dependencies? The docs mentions that one may need to add them but what exactly to add?

[pardeike]

If you use an IDE (like Visual Studio, don’t know about Rider, never used it) it will automatically download the dependencies. The nuget package also lists the dependencies as does a decompiler like dnSpy

[AqlaSolutions]

These are nuget package dependencies:

<dependencies>
  <group targetFramework=".NETFramework3.5">
    <dependency id="MonoMod.Core" version="1.1.0" exclude="Build,Analyzers" />
  </group>
  <group targetFramework=".NETFramework4.5.2">
    <dependency id="MonoMod.Core" version="1.1.0" exclude="Build,Analyzers" />
  </group>
  <group targetFramework=".NETFramework4.7.2">
    <dependency id="MonoMod.Core" version="1.1.0" exclude="Build,Analyzers" />
  </group>
  <group targetFramework=".NETFramework4.8">
    <dependency id="MonoMod.Core" version="1.1.0" exclude="Build,Analyzers" />
  </group>
  <group targetFramework=".NETCoreApp3.0">
    <dependency id="MonoMod.Core" version="1.1.0" exclude="Build,Analyzers" />
  </group>
  <group targetFramework=".NETCoreApp3.1">
    <dependency id="MonoMod.Core" version="1.1.0" exclude="Build,Analyzers" />
  </group>
  <group targetFramework="net5.0">
    <dependency id="MonoMod.Core" version="1.1.0" exclude="Build,Analyzers" />
    <dependency id="System.Text.Json" version="5.0.2" exclude="Build,Analyzers" />
  </group>
  <group targetFramework="net6.0">
    <dependency id="MonoMod.Core" version="1.1.0" exclude="Build,Analyzers" />
    <dependency id="System.Text.Json" version="6.0.9" exclude="Build,Analyzers" />
  </group>
  <group targetFramework="net7.0">
    <dependency id="MonoMod.Core" version="1.1.0" exclude="Build,Analyzers" />
    <dependency id="System.Text.Json" version="7.0.4" exclude="Build,Analyzers" />
  </group>
  <group targetFramework="net8.0">
    <dependency id="MonoMod.Core" version="1.1.0" exclude="Build,Analyzers" />
    <dependency id="System.Text.Json" version="8.0.1" exclude="Build,Analyzers" />
  </group>
  <group targetFramework=".NETStandard2.0">
    <dependency id="Lib.Harmony.Ref" version="2.3.3" exclude="Build,Analyzers" />
    <dependency id="MonoMod.Core" version="1.1.0" exclude="Build,Analyzers" />
  </group>
</dependencies>

The assembly explorer shows more:

So for .NET 7 I need to manually add the nuget packages System.Text.Json and MonoMod.Core, correct?

[AqlaSolutions]

We've found the cause of this exception. MonoMod doesn't support ARM architecture on MacOS. Is there something we can do to make it work there?

[pardeike]

Contribute to the complex task of patching low level architecture in the MonoMod repository? Or simply use MacCatalyst for now?

[AqlaSolutions]

Excuse me, what do you mean by using MacCatalyst? I'm not a Mac user so I'm not familiar with MacCatalyst, how it can help?

Do you know any Harmony-like library that supports MacOS ARM?

[pardeike]

You missed my comment earlier: https://github.com/pardeike/Harmony/issues/607#issuecomment-2061115901

[AqlaSolutions]

Perhaps RimWorld works because Unity uses its own fork of dotnet runtime based on Mono and it may also use something like rosetta emulation. I haven't found a way to do it with dotnet.

[pardeike]

I close this issue as the real work has to be done in MonoMod (and is picking up a bit lately)