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T4.BuildTools Inconsistent .net version #186

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@innominateAtWork

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@innominateAtWork

The T4.BuildTools package seems to compile t4 files against a different version of .net depending on if the build is run from visual studio vs dotnet build.

My Project file looks like:

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

  <PropertyGroup>
    <OutputType>Exe</OutputType>
    <TargetFramework>net6.0</TargetFramework>
    <ImplicitUsings>enable</ImplicitUsings>
    <Nullable>enable</Nullable>
    <TransformOnBuild>True</TransformOnBuild>
    <TransformOutOfDateOnly>False</TransformOutOfDateOnly>
  </PropertyGroup>
  
  <ItemGroup>
    <PackageReference Include="T4.BuildTools" Version="3.0.0-preview-0052-g5d0f76c785" />      
  </ItemGroup>
  
  <ItemGroup>
    <T4Transform Include="Program.tt"/>
  </ItemGroup>
 
</Project>

Program.tt looks like:

<#@ output extension=".cs" #>

<#        
   //var a = 8;
   //var str = $"Hello Mono T4. A={a}";
   var str = System.Environment.Version.ToString();
#>
    
Console.WriteLine("<#=str#>");

When built and run from visual studio it outputs "4.0.30319.42000"
When built and run via dotnet run it outputs "8.0.5"

newer C# features like interpolation also dont work when run within visual studio.

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