Amalgamation

Amalgam.csproj

<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
    <OutputType>Exe</OutputType>
    <TargetFramework>netcoreapp2.0</TargetFramework>
  </PropertyGroup>
  <!-- https://stackoverflow.com/questions/15858710/how-concatenate-files-in-msbuild-and-preserve-tabs-and-spaces -->
  <Target Name="ConcatenateScripts" AfterTargets="Build">
    <ItemGroup>
      <ConcatFiles Include="@(Compile)" />
      <ConcatFiles Remove="obj/**/*.cs" />
      <ConcatFiles Remove="$(UserProfile)/**/*.AssemblyAttributes.cs" />
    </ItemGroup>
    <ItemGroup>
      <FileContents Include="// $([System.DateTime]::Now)" />
      <FileContents Include="// %(ConcatFiles.Identity)%0d%0a$([System.IO.File]::ReadAllText('%(ConcatFiles.Identity)'))" />
      <FileContents Include="// $([System.DateTime]::Now)" />
    </ItemGroup>
    <WriteLinesToFile File="Amalgam.g.txt" Lines="@(FileContents)" Overwrite="true" />
  </Target>
</Project>