nogui.csproj

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <OutputType Condition="$(UseCoreRT) != 'true'">WinExe</OutputType>
    <TargetFramework>net5</TargetFramework>
    <LangVersion>preview</LangVersion>
    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>

    <RestoreSources>
      https://api.nuget.org/v3/index.json;
      https://dotnet.myget.org/F/roslyn/api/v3/index.json;
      https://dotnetfeed.blob.core.windows.net/dotnet-core/index.json;
    </RestoreSources>
  </PropertyGroup>

  <PropertyGroup Condition="$(UseCoreRT) == 'true'">
    <OutputType>Exe</OutputType>
    <DefineConstants>CORERT;$(DefineConstants)</DefineConstants>
    <IlcGenerateStackTraceData>false</IlcGenerateStackTraceData>
    <IlcInvariantGlobalization>true</IlcInvariantGlobalization>
    <NoStdLib>true</NoStdLib>
    <NoConfig>true</NoConfig>
    <RuntimeMetadataVersion>v4.0.30319</RuntimeMetadataVersion>
    <IlcDisableReflection>true</IlcDisableReflection>
    <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
    <GenerateTargetFrameworkAttribute>false</GenerateTargetFrameworkAttribute>
    <IlcSystemModule>nogui</IlcSystemModule>
  </PropertyGroup>

  <ItemGroup Condition="$(UseCoreRT) == 'true'">
    <LinkerArg Include="/subsystem:windows /entry:__managed__Main" />
    <PackageReference Include="Microsoft.DotNet.ILCompiler" Version="1.0.0-alpha-29117-01" />
  </ItemGroup>

  <ItemGroup Condition="$(UseCoreRT) != 'true'">
    <Compile Remove="MiniBCL.cs" />
    <Compile Remove="MiniRuntime.cs" />
  </ItemGroup>

  <ItemGroup>
    <PackageReference Include="Microsoft.Net.Compilers.Toolset" Version="3.7.0-3.20302.9" />
  </ItemGroup>

  <Target Name="CustomizeReferences" BeforeTargets="BeforeCompile" AfterTargets="FindReferenceAssembliesForReferences" Condition="$(UseCoreRT) == 'true'">
    <ItemGroup>
      <ReferencePathWithRefAssemblies Remove="@(ReferencePathWithRefAssemblies)" />
      <ReferencePath Remove="@(ReferencePath)" />
    </ItemGroup>
  </Target>

</Project>