How to do package versions based on TFM condition for CentralPackageVersionManagement?

[japj]

How would one use conditions on the TargetFramework with CentralPackageVersionManagement (using Directory.Packages.props).
In case you have projects with different TargetFramework and needing to use a different version based on the TargetFramework.

Example Directory.Packages.Props

<Project>
  <ItemGroup>
    <PackageVersion Condition=" '$(TargetFramework)' == 'netstandard2.0' " Include="MSTest.TestAdapter" Version="1.1.0" />
    <PackageVersion Condition=" '$(TargetFramework)' == 'net6.0' " Include="MSTest.TestAdapter" Version="3.1.0" />
  </ItemGroup>
</Project>

As far as I can tell the Directory.Packages.Props file is imported before the TargetFramework Property is set in a normal csproj file causing the conditions to evaluate to empty and thus not working.

[erdembayar]

Fyi @jeffkl

[jeffkl]

In MSBuild, all properties and imports are evaluated first. Items are then evaluated second. Since PackageVersion is an item, it is evaluated after all properties even if it is declared before a property. The following works as expected for me:

ClassLibrary1.csproj

<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
    <TargetFrameworks>net472;net6.0</TargetFrameworks>
  </PropertyGroup>
  <ItemGroup>
    <PackageReference Include="Newtonsoft.Json" />
  </ItemGroup>
</Project>

Directory.Packages.props

<Project>
  <PropertyGroup>
    <!-- Enable central package management -->
    <ManagePackageVersionsCentrally>true</ManagePackageVersionsCentrally>
  </PropertyGroup>
  <ItemGroup>
    <PackageVersion Include="Newtonsoft.Json" Version="12.0.1" Condition="'$(TargetFramework)' == 'net472'" />
    <PackageVersion Include="Newtonsoft.Json" Version="13.0.1" Condition="'$(TargetFramework)' != 'net472'" />
  </ItemGroup>
</Project>

If its not working as expected, please do a command-line based restore and attach msbuild.binlog:

msbuild /Target:Restore /BinaryLogger