System.Drawing.Common and LogDisplay load errors

Under .NET 6 add-ins, the LogDisplay may fail to load with an error complaining about a set_Font method not found. This relates to a newer version of the assembly System.Drawing.Common being present in the output directory. There is a deep .NET 6 mess related to this file, and why it might be present after referencing some packages. See for example https://github.com/dotnet/runtime/issues/64592

If using the System.Configuration.ConfigurationManager it might help to reference version 6.0.0 instead of 6.0.1.

Otherwise, the file can be explicitly deleted in the build:

<Target Name="RemoveSystemDrawingCommon" AfterTargets="ResolveAssemblyReferences">
  <ItemGroup>
    <ReferencePath Remove="@(ReferencePath)" Condition="%(ReferencePath.NuGetPackageId) == 'System.Drawing.Common'" />
  </ItemGroup>
</Target>

Is this safe? Presumably not always.

[govert]

Yay!

[pfernie]

I ran into this as well; unfortunately, i was unable to remove the intermediate dependency that was introducing System.Drawing.Common (NetMQ, in my case). I found that while the Target in this (and the linked) issue didn’t prevent the dll being copied into my output dir, the following did:

  <Target Name="RemoveSystemDrawingCommon" AfterTargets="ResolveAssemblyReferences">
    <ItemGroup>
      <ReferenceCopyLocalPaths Remove="@(ReferenceCopyLocalPaths)" Condition="%(ReferenceCopyLocalPaths.NuGetPackageId) == 'System.Drawing.Common'" />
    </ItemGroup>
  </Target>

From my reading of the linked issue, this seems to be a valid fix, although this is as you say a bit of a .net mess.