Fix package versions.

build.cake

@@ -85,6 +85,13 @@ void DotNetCoreBuild(Parameters parameters)
     var settings = new DotNetCoreBuildSettings 
     {
         Configuration = parameters.Configuration,
+        MSBuildSettings = new DotNetCoreMSBuildSettings
+        {
+            Properties =
+            {
+                { "PackageVersion", new [] { parameters.Version } }
+            }
+        }
     };
 
     DotNetCoreBuild(parameters.MSBuildSolution, settings);
@@ -99,6 +106,7 @@ Task("Build-Impl")
             settings.SetConfiguration(data.Configuration);
             settings.SetVerbosity(Verbosity.Minimal);
             settings.WithProperty("iOSRoslynPathHackRequired", "true");
+            settings.WithProperty("PackageVersion", data.Version);
             settings.UseToolVersion(MSBuildToolVersion.VS2017);
             settings.WithRestore();
         });
@@ -211,6 +219,13 @@ void DotNetCorePack(Parameters parameters)
     var settings = new DotNetCorePackSettings 
     {
         Configuration = parameters.Configuration,
+        MSBuildSettings = new DotNetCoreMSBuildSettings
+        {
+            Properties =
+            {
+                { "PackageVersion", new [] { parameters.Version } }
+            }
+        }
     };
 
     DotNetCorePack(parameters.MSBuildSolution, settings);
@@ -225,6 +240,7 @@ Task("Create-NuGet-Packages-Impl")
             settings.SetConfiguration(data.Configuration);
             settings.SetVerbosity(Verbosity.Minimal);
             settings.WithProperty("iOSRoslynPathHackRequired", "true");
+            settings.WithProperty("PackageVersion", data.Version);
             settings.UseToolVersion(MSBuildToolVersion.VS2017);
             settings.WithRestore();
             settings.WithTarget("Pack");

dirs.proj

@@ -23,13 +23,4 @@
   <ItemGroup>
     <PackageReference Include="SlnGen" Version="2.0.40" PrivateAssets="all" />
   </ItemGroup>
-
-  <Target Name="Pack" DependsOnTargets="PrepareProjectReferences">
-    <MSBuild Projects="@(_MSBuildProjectReferenceExistent)"
-             Targets="Pack"
-             Properties="$(TraversalGlobalProperties);$(TraversalBuildGlobalProperties)"
-             BuildInParallel="$(BuildInParallel)"
-             SkipNonexistentProjects="$(SkipNonexistentProjects)"
-             SkipNonexistentTargets="$(SkipNonexistentTargets)" />
-  </Target>
 </Project>

global.json

@@ -1,6 +1,6 @@
 {
     "msbuild-sdks": {
-        "Microsoft.Build.Traversal": "1.0.41",
+        "Microsoft.Build.Traversal": "1.0.43",
         "MSBuild.Sdk.Extras": "1.6.46",
         "AggregatePackage.NuGet.Sdk" : "0.1.12"
     }