Directory.Build.initial.targets

<Project>

  <PropertyGroup Condition="'$(FrameworkVersion)' == ''">
    <FrameworkVersion Condition="'$(NET_3_1)' == true">3.*</FrameworkVersion>
    <FrameworkVersion Condition="'$(NET_5_0)' == true">5.*</FrameworkVersion>
    <FrameworkVersion Condition="'$(NET_6_0)' == true">6.*</FrameworkVersion>
    <FrameworkVersion Condition="'$(NET_7_0)' == true">7.*</FrameworkVersion>
    <FrameworkVersion Condition="'$(NET_8_0)' == true">8.*</FrameworkVersion>
  </PropertyGroup>
  
  <PropertyGroup>
    <SystemTextJsonVersion Condition="'$(SystemTextJsonVersion)' == '' And '$(NET_5_0_LESS)' == true">6.*</SystemTextJsonVersion>
  </PropertyGroup>

</Project>