diff --git a/Directory.Build.props b/Directory.Build.props
new file mode 100644
index 0000000000..50476c81f1
--- /dev/null
+++ b/Directory.Build.props
@@ -0,0 +1,5 @@
+<Project>
+  <PropertyGroup>
+      <PackageOutputPath Condition="'$(PackageOutputPath)' == ''">$(MSBuildThisFileDirectory)artifacts/nuget</PackageOutputPath>
+  </PropertyGroup>
+</Project>
diff --git a/build/LegacyProject.targets b/build/LegacyProject.targets
new file mode 100644
index 0000000000..0e0d49b1c2
--- /dev/null
+++ b/build/LegacyProject.targets
@@ -0,0 +1,3 @@
+<Project>
+  <Target Name="Pack" />
+</Project>
diff --git a/build/ReferenceCoreLibraries.props b/build/ReferenceCoreLibraries.props
index 57c663cec8..bd9d6ad843 100644
--- a/build/ReferenceCoreLibraries.props
+++ b/build/ReferenceCoreLibraries.props
@@ -1,6 +1,6 @@
 <Project>
   <Import Condition="'$(TargetFramework)' == 'netcoreapp2.0'" Project="CoreLibraries.props" />
-  <ItemGroup Condition="'$(TargetFramework)' != 'netcoreapp2.0'">
-      <ProjectReference Include="$(MSBuildThisFileDirectory)/Avalonia.csproj" />
+  <ItemGroup>
+      <ProjectReference Include="$(MSBuildThisFileDirectory)../packages/Avalonia/Avalonia.csproj" />
   </ItemGroup>
 </Project>
diff --git a/build/SampleApp.props b/build/SampleApp.props
index 2269cd5713..4e03e8aec9 100644
--- a/build/SampleApp.props
+++ b/build/SampleApp.props
@@ -3,6 +3,6 @@
     <OutputType>WinExe</OutputType>
   </PropertyGroup>
   <ItemGroup>
-    <ProjectReference Include="..\..\packages\Avalonia.Desktop\Avalonia.Desktop.csproj" />
+    <ProjectReference Include="$(MSBuildThisFileDirectory)..\packages\Avalonia.Desktop\Avalonia.Desktop.csproj" />
   </ItemGroup>
 </Project>
diff --git a/build/System.Drawing.Common.props b/build/System.Drawing.Common.props
index a568152bbd..2b3707d38a 100644
--- a/build/System.Drawing.Common.props
+++ b/build/System.Drawing.Common.props
@@ -1,5 +1,5 @@
 <Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup>
-    <PackageReference Include="System.Drawing.Common" Version="4.5.0-preview1-25914-04" />
+    <PackageReference Include="System.Drawing.Common" Version="4.5.0" />
   </ItemGroup>
 </Project>
diff --git a/dirs.proj b/dirs.proj
index 3f4f8e2501..0c94bc9572 100644
--- a/dirs.proj
+++ b/dirs.proj
@@ -1,9 +1,9 @@
 <Project Sdk="Microsoft.Build.Traversal">
   <ItemGroup>
-    <ProjectReference Include="build/**/*.*proj" />
     <ProjectReference Include="src/**/*.*proj" />
     <ProjectReference Include="samples/**/*.*proj" />
     <ProjectReference Include="tests/**/*.*proj" />
+    <ProjectReference Include="packages/**/*.*proj" />
     <ProjectReference Remove="**/*.shproj" />
     <ProjectReference Remove="src/Markup/Avalonia.Markup.Xaml/PortableXaml/**/*.*proj" />
     <ProjectReference Remove="**/*.pbxproj" />
diff --git a/samples/ControlCatalog.Android/ControlCatalog.Android.csproj b/samples/ControlCatalog.Android/ControlCatalog.Android.csproj
index 86030bf200..272632e7eb 100644
--- a/samples/ControlCatalog.Android/ControlCatalog.Android.csproj
+++ b/samples/ControlCatalog.Android/ControlCatalog.Android.csproj
@@ -155,4 +155,5 @@
   <Import Project="..\..\build\Rx.props" />
   <Import Project="$(MSBuildExtensionsPath)\Xamarin\Android\Xamarin.Android.CSharp.targets" />
   <Import Project="..\..\build\AndroidWorkarounds.props" />
+  <Import Project="..\..\build\LegacyProject.targets" />
 </Project>
diff --git a/samples/Directory.Build.props b/samples/Directory.Build.props
index 7325bab2a3..b9075b957b 100644
--- a/samples/Directory.Build.props
+++ b/samples/Directory.Build.props
@@ -1,3 +1,6 @@
 <Project>
+  <PropertyGroup>
+      <IsPackable>false</IsPackable>
+  </PropertyGroup>
   <Import Project="..\build\SharedVersion.props" />
-</Project>
\ No newline at end of file
+</Project>
diff --git a/samples/interop/WindowsInteropTest/WindowsInteropTest.csproj b/samples/interop/WindowsInteropTest/WindowsInteropTest.csproj
index 1915ab276e..3ab30bd2b6 100644
--- a/samples/interop/WindowsInteropTest/WindowsInteropTest.csproj
+++ b/samples/interop/WindowsInteropTest/WindowsInteropTest.csproj
@@ -186,4 +186,5 @@
   <Import Project="..\..\..\build\Rx.props" />
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <Import Project="..\..\..\build\SkiaSharp.props" />
+  <Import Project="..\..\..\build\LegacyProject.targets" />
 </Project>
diff --git a/src/Android/Avalonia.Android/Avalonia.Android.csproj b/src/Android/Avalonia.Android/Avalonia.Android.csproj
index 3fa14055db..9c3d4fb3a1 100644
--- a/src/Android/Avalonia.Android/Avalonia.Android.csproj
+++ b/src/Android/Avalonia.Android/Avalonia.Android.csproj
@@ -4,14 +4,7 @@
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
   </PropertyGroup>
   <ItemGroup>
-    <ProjectReference Include="..\..\Avalonia.Animation\Avalonia.Animation.csproj" />
-    <ProjectReference Include="..\..\Avalonia.Base\Avalonia.Base.csproj" />
-    <ProjectReference Include="..\..\Avalonia.Controls\Avalonia.Controls.csproj" />
-    <ProjectReference Include="..\..\Avalonia.Input\Avalonia.Input.csproj" />
-    <ProjectReference Include="..\..\Avalonia.Interactivity\Avalonia.Interactivity.csproj" />
-    <ProjectReference Include="..\..\Avalonia.Layout\Avalonia.Layout.csproj" />
-    <ProjectReference Include="..\..\Avalonia.Styling\Avalonia.Styling.csproj" />
-    <ProjectReference Include="..\..\Avalonia.Visuals\Avalonia.Visuals.csproj" />
+    <ProjectReference Include="..\..\..\packages\Avalonia\Avalonia.csproj" />
     <ProjectReference Include="..\..\Skia\Avalonia.Skia\Avalonia.Skia.csproj" />
   </ItemGroup>
   <Import Project="..\..\Shared\PlatformSupport\PlatformSupport.projitems" Label="Shared" />
diff --git a/src/Android/Avalonia.AndroidTestApplication/Avalonia.AndroidTestApplication.csproj b/src/Android/Avalonia.AndroidTestApplication/Avalonia.AndroidTestApplication.csproj
index 48a7d42fc8..b493fd1ef2 100644
--- a/src/Android/Avalonia.AndroidTestApplication/Avalonia.AndroidTestApplication.csproj
+++ b/src/Android/Avalonia.AndroidTestApplication/Avalonia.AndroidTestApplication.csproj
@@ -153,4 +153,5 @@
   <Import Project="..\..\..\build\Rx.props" />
   <Import Project="..\..\..\build\System.Memory.props" />
   <Import Project="..\..\..\build\AndroidWorkarounds.props" />
+  <Import Project="..\..\..\build\LegacyProject.targets" />
 </Project>
diff --git a/src/Avalonia.DesignerSupport/Avalonia.DesignerSupport.csproj b/src/Avalonia.DesignerSupport/Avalonia.DesignerSupport.csproj
index f9d6a8d183..e732a7eef0 100644
--- a/src/Avalonia.DesignerSupport/Avalonia.DesignerSupport.csproj
+++ b/src/Avalonia.DesignerSupport/Avalonia.DesignerSupport.csproj
@@ -8,26 +8,6 @@
          need change when there are breaking changes to designer support api.
     -->
     <Version>0.7.0</Version>
-  </PropertyGroup>
-  <PropertyGroup Condition=" '$(Configuration)' == 'Debug' ">
-    <DebugSymbols>true</DebugSymbols>
-    <DebugType>full</DebugType>
-    <Optimize>false</Optimize>
-    <OutputPath>bin\Debug\</OutputPath>
-    <DefineConstants>DEBUG;TRACE</DefineConstants>
-    <ErrorReport>prompt</ErrorReport>
-    <WarningLevel>4</WarningLevel>
-    <DocumentationFile>bin\Debug\Avalonia.DesignerSupport.xml</DocumentationFile>
-    <NoWarn>CS1591;CS0067</NoWarn>
-  </PropertyGroup>
-  <PropertyGroup Condition=" '$(Configuration)' == 'Release' ">
-    <DebugType>pdbonly</DebugType>
-    <Optimize>true</Optimize>
-    <OutputPath>bin\Release\</OutputPath>
-    <DefineConstants>TRACE</DefineConstants>
-    <ErrorReport>prompt</ErrorReport>
-    <WarningLevel>4</WarningLevel>
-    <DocumentationFile>bin\Release\Avalonia.DesignerSupport.xml</DocumentationFile>
     <NoWarn>CS1591</NoWarn>
   </PropertyGroup>
   <ItemGroup>
@@ -43,6 +23,5 @@
     <ProjectReference Include="..\Avalonia.Styling\Avalonia.Styling.csproj" />
     <ProjectReference Include="..\Avalonia.Themes.Default\Avalonia.Themes.Default.csproj" />
   </ItemGroup>
-  <Import Project="..\..\build\Microsoft.CSharp.props" />
   <Import Project="..\..\build\Rx.props" />
 </Project>
diff --git a/src/Avalonia.DesktopRuntime/Avalonia.DesktopRuntime.csproj b/src/Avalonia.DesktopRuntime/Avalonia.DesktopRuntime.csproj
index 65c4bcb4a2..b681d2b1ae 100644
--- a/src/Avalonia.DesktopRuntime/Avalonia.DesktopRuntime.csproj
+++ b/src/Avalonia.DesktopRuntime/Avalonia.DesktopRuntime.csproj
@@ -11,6 +11,10 @@
       <ProjectReference Include="../Avalonia.Controls/Avalonia.Controls.csproj" />
   </ItemGroup>
 
+  <ItemGroup>
+    <PackageReference Include="System.Runtime.InteropServices.RuntimeInformation" Version="4.3.0" Condition="'$(TargetFramework)' == 'net461'" />
+  </ItemGroup>
+
   <Import Project="..\..\build\NetCore.props" />
   <Import Project="..\Shared\PlatformSupport\PlatformSupport.projitems" />
 </Project>
diff --git a/src/Directory.Build.props b/src/Directory.Build.props
index d18a0e72ba..a3f0c01a51 100644
--- a/src/Directory.Build.props
+++ b/src/Directory.Build.props
@@ -1,4 +1,5 @@
 <Project>
+  <Import Project="..\Directory.Build.props" />
   <Import Project="..\build\SharedVersion.props" />
   <Import Project="..\build\SourceLink.props" Condition="'$(DisableSourceLink)' == ''" />
-</Project>
\ No newline at end of file
+</Project>
diff --git a/src/Windows/Avalonia.Win32.Interop/Avalonia.Win32.Interop.csproj b/src/Windows/Avalonia.Win32.Interop/Avalonia.Win32.Interop.csproj
index 3405e5db49..0d0dd98a77 100644
--- a/src/Windows/Avalonia.Win32.Interop/Avalonia.Win32.Interop.csproj
+++ b/src/Windows/Avalonia.Win32.Interop/Avalonia.Win32.Interop.csproj
@@ -5,6 +5,7 @@
     <ExtrasEnableWpfProjectSetup>true</ExtrasEnableWpfProjectSetup>
     <ExtrasEnableImplicitWinFormsReferences>true</ExtrasEnableImplicitWinFormsReferences>
     <UseDirect3D9>true</UseDirect3D9>
+    <PackageId>Avalonia.Win32.Interoperability</PackageId>
   </PropertyGroup>
   <ItemGroup>
     <ProjectReference Include="..\..\..\packages\Avalonia\Avalonia.csproj" />
diff --git a/src/iOS/Avalonia.iOSTestApplication/Avalonia.iOSTestApplication.csproj b/src/iOS/Avalonia.iOSTestApplication/Avalonia.iOSTestApplication.csproj
index 9a6b624a66..34c8ae7605 100644
--- a/src/iOS/Avalonia.iOSTestApplication/Avalonia.iOSTestApplication.csproj
+++ b/src/iOS/Avalonia.iOSTestApplication/Avalonia.iOSTestApplication.csproj
@@ -187,4 +187,5 @@
   <Import Project="$(MSBuildExtensionsPath)\Xamarin\iOS\Xamarin.iOS.CSharp.targets" />
   <Import Project="..\..\..\build\Rx.props" />
   <Import Project="..\..\..\build\iOSWorkarounds.props" />
+  <Import Project="..\..\..\build\LegacyProject.targets" />
 </Project>
diff --git a/src/tools/Directory.Build.props b/src/tools/Directory.Build.props
new file mode 100644
index 0000000000..6ce26913b0
--- /dev/null
+++ b/src/tools/Directory.Build.props
@@ -0,0 +1,6 @@
+<Project>
+  <Import Project="..\Directory.Build.props" />
+  <PropertyGroup>
+      <IsPackable>false</IsPackable>
+  </PropertyGroup>
+</Project>
diff --git a/tests/Avalonia.Benchmarks/Avalonia.Benchmarks.csproj b/tests/Avalonia.Benchmarks/Avalonia.Benchmarks.csproj
index 01729f4899..6550a23b7b 100644
--- a/tests/Avalonia.Benchmarks/Avalonia.Benchmarks.csproj
+++ b/tests/Avalonia.Benchmarks/Avalonia.Benchmarks.csproj
@@ -1,9 +1,9 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFrameworks>netcoreapp2.0</TargetFrameworks>
     <TargetFramework>netcoreapp2.0</TargetFramework>
     <OutputType>Exe</OutputType>
+    <IsPackable>false</IsPackable>
   </PropertyGroup>
   <ItemGroup>
     <ProjectReference Include="..\..\src\Avalonia.Animation\Avalonia.Animation.csproj" />
@@ -23,4 +23,4 @@
   <ItemGroup>
     <Folder Include="Properties\" />
   </ItemGroup>
-</Project>
\ No newline at end of file
+</Project>
diff --git a/tests/Avalonia.DesignerSupport.TestApp/Avalonia.DesignerSupport.TestApp.csproj b/tests/Avalonia.DesignerSupport.TestApp/Avalonia.DesignerSupport.TestApp.csproj
index 7736105529..d2de6cd27d 100644
--- a/tests/Avalonia.DesignerSupport.TestApp/Avalonia.DesignerSupport.TestApp.csproj
+++ b/tests/Avalonia.DesignerSupport.TestApp/Avalonia.DesignerSupport.TestApp.csproj
@@ -1,7 +1,8 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>netcoreapp2.0</TargetFramework> 
+    <TargetFramework>netcoreapp2.0</TargetFramework>
+    <IsPackable>false</IsPackable>
   </PropertyGroup>
   <ItemGroup>
     <Compile Update="**\*.xaml.cs">
diff --git a/tests/Avalonia.Direct2D1.UnitTests/app.config b/tests/Avalonia.Direct2D1.UnitTests/app.config
deleted file mode 100644
index e4df6c253e..0000000000
--- a/tests/Avalonia.Direct2D1.UnitTests/app.config
+++ /dev/null
@@ -1,15 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<configuration>
-  <runtime>
-    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
-      <dependentAssembly>
-        <assemblyIdentity name="SharpDX" publicKeyToken="b4dcf0f35e5521f1" culture="neutral"/>
-        <bindingRedirect oldVersion="0.0.0.0-3.1.1.0" newVersion="3.1.1.0"/>
-      </dependentAssembly>
-      <dependentAssembly>
-        <assemblyIdentity name="SharpDX.DXGI" publicKeyToken="b4dcf0f35e5521f1" culture="neutral"/>
-        <bindingRedirect oldVersion="0.0.0.0-3.1.1.0" newVersion="3.1.1.0"/>
-      </dependentAssembly>
-    </assemblyBinding>
-  </runtime>
-<startup><supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.7"/></startup></configuration>
diff --git a/tests/Avalonia.Layout.UnitTests/Avalonia.Layout.UnitTests.csproj b/tests/Avalonia.Layout.UnitTests/Avalonia.Layout.UnitTests.csproj
index ec8f1e6e8d..63f7f3ec0e 100644
--- a/tests/Avalonia.Layout.UnitTests/Avalonia.Layout.UnitTests.csproj
+++ b/tests/Avalonia.Layout.UnitTests/Avalonia.Layout.UnitTests.csproj
@@ -16,7 +16,6 @@
     <ProjectReference Include="..\..\src\Avalonia.Input\Avalonia.Input.csproj" />
     <ProjectReference Include="..\..\src\Avalonia.Interactivity\Avalonia.Interactivity.csproj" />
     <ProjectReference Include="..\..\src\Avalonia.Layout\Avalonia.Layout.csproj" />
-    <ProjectReference Include="..\..\src\Avalonia.ReactiveUI\Avalonia.ReactiveUI.csproj" />
     <ProjectReference Include="..\..\src\Avalonia.Visuals\Avalonia.Visuals.csproj" />
     <ProjectReference Include="..\..\src\Avalonia.Styling\Avalonia.Styling.csproj" />
     <ProjectReference Include="..\..\src\Avalonia.Themes.Default\Avalonia.Themes.Default.csproj" />
@@ -26,4 +25,4 @@
   <ItemGroup>
     <Service Include="{82a7f48d-3b50-4b1e-b82e-3ada8210c358}" />
   </ItemGroup>
-</Project>
\ No newline at end of file
+</Project>
diff --git a/tests/Avalonia.Layout.UnitTests/app.config b/tests/Avalonia.Layout.UnitTests/app.config
deleted file mode 100644
index 01de951354..0000000000
--- a/tests/Avalonia.Layout.UnitTests/app.config
+++ /dev/null
@@ -1,15 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<configuration>
-  <runtime>
-    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
-      <dependentAssembly>
-        <assemblyIdentity name="Ploeh.AutoFixture" publicKeyToken="b24654c590009d4f" culture="neutral" />
-        <bindingRedirect oldVersion="0.0.0.0-3.40.0.0" newVersion="3.40.0.0" />
-      </dependentAssembly>
-      <dependentAssembly>
-        <assemblyIdentity name="Moq" publicKeyToken="69f491c39445e920" culture="neutral" />
-        <bindingRedirect oldVersion="0.0.0.0-4.2.1510.2205" newVersion="4.2.1510.2205" />
-      </dependentAssembly>
-    </assemblyBinding>
-  </runtime>
-</configuration>
\ No newline at end of file
diff --git a/tests/Avalonia.UnitTests/Avalonia.UnitTests.csproj b/tests/Avalonia.UnitTests/Avalonia.UnitTests.csproj
index c189bbbe66..f065fcb63d 100644
--- a/tests/Avalonia.UnitTests/Avalonia.UnitTests.csproj
+++ b/tests/Avalonia.UnitTests/Avalonia.UnitTests.csproj
@@ -3,6 +3,7 @@
     <TargetFrameworks>netstandard2.0</TargetFrameworks>
     <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
     <OutputType>Library</OutputType>
+    <IsPackable>false</IsPackable>
   </PropertyGroup>
   <ItemGroup>
     <ProjectReference Include="..\..\src\Markup\Avalonia.Markup.Xaml\Avalonia.Markup.Xaml.csproj" />
@@ -20,4 +21,4 @@
   <Import Project="..\..\build\Moq.props" />
   <Import Project="..\..\build\Rx.props" />
   <Import Project="..\..\src\Shared\PlatformSupport\PlatformSupport.projitems" Label="Shared" />
-</Project>
\ No newline at end of file
+</Project>