Bring back the SetNuSpecProperties target

Author: AArnott

src/Directory.Build.props

@@ -18,4 +18,11 @@
     <PackageReference Include="Nerdbank.GitVersioning" Version="$(NerdbankGitVersioningVersion)" PrivateAssets="all" />
   </ItemGroup>
 
+  <Target Name="SetNuSpecProperties" BeforeTargets="GenerateNuspec" DependsOnTargets="GetBuildVersion">
+    <PropertyGroup>
+      <!-- https://github.com/NuGet/Home/issues/4649 -->
+      <!--<NuSpecProperties>$(NuSpecProperties);GitCommitIdShort=$(GitCommitIdShort)</NuSpecProperties>-->
+      <PackageLicenseUrl>https://raw.githubusercontent.com/AArnott/CodeGeneration.Roslyn/$(GitCommitIdShort)/LICENSE.txt</PackageLicenseUrl>
+    </PropertyGroup>
+  </Target>
 </Project>