System.ArgumentException: An item with the same key has already been added.

[aelij]

System.ArgumentException: An item with the same key has already been added.

[aelij]

Hmm it’s weird because it doesn’t even fail in my task’s code. Can you try adding the roots packages assemblies as well? Microsoft.CodeAnalysis

[danwalmsley]

I think it already is?

<PropertyGroup>
    <InternalsAssemblyNames>Microsoft.CodeAnalysis.Features;Microsoft.CodeAnalysis.Workspaces</InternalsAssemblyNames>
  </PropertyGroup>
  
  <ItemGroup>
    <PackageReference Include="IgnoresAccessChecksToGenerator" Version="0.1.0" PrivateAssets="all" />
    <PackageReference Include="Microsoft.Build" Version="15.3.0-preview-000388-01" />
    <PackageReference Include="Microsoft.CodeAnalysis" Version="2.3.1" />
    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Features" Version="2.3.1" />
    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="2.3.1" />
    <PackageReference Include="Microsoft.CodeAnalysis.Workspaces.Common" Version="2.3.1" />
    <PackageReference Include="RestSharp.NetCore" Version="105.2.4-rc4-24214-01" />
  </ItemGroup>

[danwalmsley]

Oh to the InternalsAssemblyNames attribute! just trying now

[aelij]

I meant add it in the InternalsAssemblyNames. It should be there anyhow since there are base types in there, and the accessibility needs to be the same for it to work properly.

[aelij]

I think I know what the problem is. I'm adding the new reference assemblies without removing the old ones. Perhaps the problem is in the netcoreapp2.0 SDK (which I haven't tested). Anyway it's an easy fix.

[danwalmsley]

@aelij let me know when its ready, and I will test, adding Microsoft.CodeAnalysis didn't change anything.

[danwalmsley]

@aelij gentle reminder to submit fix ;)

[aelij]

@danwalmsley Try now :)

[danwalmsley]

Thanks It seems to work now 👍