Downgrade System.Threading.Tasks.Extensions due to a runtime version mismatch

Author: Tyrrrz

CliWrap/CliWrap.csproj

@@ -24,12 +24,12 @@
 
   <ItemGroup>
     <PackageReference Include="CSharpier.MsBuild" Version="0.30.2" PrivateAssets="all" />
-    <PackageReference Include="Microsoft.Bcl.AsyncInterfaces" Version="9.0.0" Condition="'$(TargetFramework)' == 'netstandard2.0'" />
+    <PackageReference Include="Microsoft.Bcl.AsyncInterfaces" Version="9.0.0" Condition="$([MSBuild]::IsTargetFrameworkCompatible('$(TargetFramework)', 'netstandard2.1')) != true" />
     <PackageReference Include="Microsoft.SourceLink.GitHub" Version="8.0.0" PrivateAssets="all" />
     <PackageReference Include="PolyShim" Version="1.14.0" PrivateAssets="all" />
-    <PackageReference Include="System.Threading.Tasks.Extensions" Version="4.6.0" Condition="'$(TargetFramework)' == 'netstandard2.0'" />
-    <PackageReference Include="System.Management" Version="9.0.0" Condition="'$(TargetFramework)' == 'netstandard2.0' OR '$(TargetFramework)' == 'netstandard2.1'" />
-    <PackageReference Include="System.Memory" Version="4.6.0" Condition="'$(TargetFramework)' == 'netstandard2.0'" />
+    <PackageReference Include="System.Threading.Tasks.Extensions" Version="4.5.4" Condition="$([MSBuild]::IsTargetFrameworkCompatible('$(TargetFramework)', 'netstandard2.1')) != true" />
+    <PackageReference Include="System.Management" Version="9.0.0" Condition="'$(TargetFrameworkIdentifier)' == '.NETStandard'" />
+    <PackageReference Include="System.Memory" Version="4.6.0" Condition="$([MSBuild]::IsTargetFrameworkCompatible('$(TargetFramework)', 'netstandard2.1')) != true" />
   </ItemGroup>
 
   <ItemGroup Condition="'$(TargetFrameworkIdentifier)' == '.NETFramework'">

Directory.Build.props

@@ -12,7 +12,7 @@
   </PropertyGroup>
 
   <!-- Disable nullability warnings on older frameworks because there is no nullability info for BCL -->
-  <PropertyGroup Condition="'$(TargetFramework)' == 'netstandard2.0' OR '$(TargetFramework)' == 'net462'">
+  <PropertyGroup Condition="$([MSBuild]::IsTargetFrameworkCompatible('$(TargetFramework)', 'netstandard2.1')) != true">
     <Nullable>annotations</Nullable>
   </PropertyGroup>