fix builds

build/ApiDiff.props

@@ -1,11 +1,12 @@
 <Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <ApiContractPackageVersion>0.10.0-preview1</ApiContractPackageVersion>
-    <PackageId Condition="'$(PackageId)' == ''">Avalonia</PackageId>
+    <NugetPackageName Condition="'$(PackageId)' != ''">$(PackageId)</NugetPackageName>
+    <NugetPackageName Condition="'$(PackageId)' == ''">Avalonia</NugetPackageName>
   </PropertyGroup>
     <ItemGroup>
       <PackageDownload Include="Avalonia" Version="[$(ApiContractPackageVersion)]" />
       <PackageReference Include="Microsoft.DotNet.ApiCompat" Version="5.0.0-beta.20364.3" PrivateAssets="All" />
-      <ResolvedMatchingContract Include="$(NuGetPackageRoot)\$(PackageId)\$(ApiContractPackageVersion)\lib\netstandard2.0\$(AssemblyName).dll" />
+      <ResolvedMatchingContract Include="$(NuGetPackageRoot)\$(NugetPackageName)\$(ApiContractPackageVersion)\lib\netstandard2.0\$(AssemblyName).dll" />
     </ItemGroup>
 </Project>

src/Avalonia.Desktop/Avalonia.Desktop.csproj

@@ -11,8 +11,6 @@
       <ProjectReference Include="../../packages/Avalonia/Avalonia.csproj" />
       <ProjectReference Include="../Avalonia.X11/Avalonia.X11.csproj" />
   </ItemGroup>
-
-  <ItemGroup>
-    <Import Project="..\..\build\ApiDiff.props" />
-  </ItemGroup>
+  
+  <Import Project="..\..\build\ApiDiff.props" />  
 </Project>

src/Linux/Avalonia.LinuxFramebuffer/Avalonia.LinuxFramebuffer.csproj

@@ -8,5 +8,5 @@
     <ProjectReference Include="..\..\..\packages\Avalonia\Avalonia.csproj" />
     <ProjectReference Include="..\..\Skia\Avalonia.Skia\Avalonia.Skia.csproj" />
   </ItemGroup>
-  <Import Project="..\..\build\ApiDiff.props" />
+  <Import Project="..\..\..\build\ApiDiff.props" />
 </Project>

src/Markup/Avalonia.Markup.Xaml.Loader/Avalonia.Markup.Xaml.Loader.csproj

@@ -11,5 +11,5 @@
   <ItemGroup>
     <ProjectReference Include="..\Avalonia.Markup.Xaml\Avalonia.Markup.Xaml.csproj" />
   </ItemGroup>
-  <Import Project="..\..\build\ApiDiff.props" />
+  <Import Project="..\..\..\build\ApiDiff.props" />
 </Project>

src/Markup/Avalonia.Markup.Xaml/Avalonia.Markup.Xaml.csproj

@@ -64,5 +64,5 @@
     <ProjectReference Include="..\Avalonia.Markup\Avalonia.Markup.csproj" />
   </ItemGroup>
   <Import Project="..\..\..\build\Rx.props" />
-  <Import Project="..\..\build\ApiDiff.props" />
+  <Import Project="..\..\..\build\ApiDiff.props" />
 </Project>

src/Markup/Avalonia.Markup/Avalonia.Markup.csproj

@@ -16,5 +16,5 @@
   </ItemGroup>
   <Import Project="..\..\..\build\Rx.props" />
   <Import Project="..\..\..\build\System.Memory.props" />
-  <Import Project="..\..\build\ApiDiff.props" />
+  <Import Project="..\..\..\build\ApiDiff.props" />
 </Project>

src/Skia/Avalonia.Skia/Avalonia.Skia.csproj

@@ -17,5 +17,5 @@
   <Import Project="..\..\..\build\SkiaSharp.props" />
   <Import Project="..\..\..\build\HarfBuzzSharp.props" />
   <Import Project="..\..\Shared\RenderHelpers\RenderHelpers.projitems" Label="Shared" />
-  <Import Project="..\..\build\ApiDiff.props" />
+  <Import Project="..\..\..\build\ApiDiff.props" />
 </Project>

src/Windows/Avalonia.Win32/Avalonia.Win32.csproj

@@ -9,5 +9,5 @@
     <PackageReference Include="Avalonia.Angle.Windows.Natives" Version="2.1.0.2019013001" />
   </ItemGroup>
   <Import Project="$(MSBuildThisFileDirectory)\..\..\..\build\System.Drawing.Common.props" />  
-  <Import Project="..\..\build\ApiDiff.props" />
+  <Import Project="..\..\..\build\ApiDiff.props" />
 </Project>