Dead end System.ComponentModel.Annotations package (#51891)

Nearly all configurations in the System.ComponentModel.Annotations
package weren't built live anymore and just redistributed from older
packages. Except for the netstandard2.0 configuration, the package
didn't receive any changes. As the library is exposed as part of the
shared framework, a reference to the package on .NETCoreApp isn't
necessary and will be ignored by the SDK.

Based on these reasons, dead-ending the package to remove the burden
of maintaining the harvesting of old configurations.

Contributes to #47530

eng/Versions.props

@@ -81,7 +81,7 @@
     <SystemBuffersVersion>4.5.1</SystemBuffersVersion>
     <SystemCollectionsVersion>4.3.0</SystemCollectionsVersion>
     <SystemCollectionsConcurrentVersion>4.3.0</SystemCollectionsConcurrentVersion>
-    <SystemComponentModelAnnotationsVersion>4.7.0</SystemComponentModelAnnotationsVersion>
+    <SystemComponentModelAnnotationsVersion>5.0.0</SystemComponentModelAnnotationsVersion>
     <SystemDataSqlClientVersion>4.8.1</SystemDataSqlClientVersion>
     <SystemDiagnosticsContractsVersion>4.3.0</SystemDiagnosticsContractsVersion>
     <SystemDiagnosticsDebugVersion>4.3.0</SystemDiagnosticsDebugVersion>

src/libraries/Microsoft.Extensions.Options.DataAnnotations/src/Microsoft.Extensions.Options.DataAnnotations.csproj

@@ -10,14 +10,10 @@
     <ProjectReference Include="$(LibrariesProjectRoot)Microsoft.Extensions.Options\src\Microsoft.Extensions.Options.csproj" />
   </ItemGroup>
 
-  <ItemGroup Condition="'$(TargetFramework)' == 'netstandard2.0'">
+  <ItemGroup Condition="'$(TargetFrameworkIdentifier)' == '.NETStandard'">
     <PackageReference Include="System.ComponentModel.Annotations" Version="$(SystemComponentModelAnnotationsVersion)" />
   </ItemGroup>
 
-  <ItemGroup Condition="'$(TargetFramework)' == 'netstandard2.1'">
-    <ProjectReference Include="$(LibrariesProjectRoot)System.ComponentModel.Annotations\src\System.ComponentModel.Annotations.csproj" />
-  </ItemGroup>
-
   <ItemGroup Condition="$(TargetFramework.StartsWith('net4'))">
     <Reference Include="System.ComponentModel.DataAnnotations" />
   </ItemGroup>

src/libraries/System.ComponentModel.Annotations/Directory.Build.props

@@ -2,18 +2,5 @@
   <Import Project="..\Directory.Build.props" />
   <PropertyGroup>
     <StrongNameKeyId>Microsoft</StrongNameKeyId>
-    <PackageDescription>Provides attributes that are used to define metadata for objects used as data sources.
-
-Commonly Used Types:
-System.ComponentModel.DataAnnotations.ValidationResult
-System.ComponentModel.DataAnnotations.IValidatableObject
-System.ComponentModel.DataAnnotations.ValidationAttribute
-System.ComponentModel.DataAnnotations.RequiredAttribute
-System.ComponentModel.DataAnnotations.StringLengthAttribute
-System.ComponentModel.DataAnnotations.DisplayAttribute
-System.ComponentModel.DataAnnotations.RegularExpressionAttribute
-System.ComponentModel.DataAnnotations.DataTypeAttribute
-System.ComponentModel.DataAnnotations.RangeAttribute
-System.ComponentModel.DataAnnotations.KeyAttribute</PackageDescription>
   </PropertyGroup>
 </Project>

src/libraries/System.ComponentModel.Annotations/ref/System.ComponentModel.Annotations.csproj

@@ -1,12 +1,14 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.1</TargetFrameworks>
+    <TargetFrameworks>$(NetCoreAppCurrent)</TargetFrameworks>
     <Nullable>enable</Nullable>
   </PropertyGroup>
   <ItemGroup>
     <Compile Include="System.ComponentModel.Annotations.cs" />
-    <Compile Include="$(CoreLibSharedDir)System\Diagnostics\CodeAnalysis\DynamicallyAccessedMembersAttribute.cs" />
-    <Compile Include="$(CoreLibSharedDir)System\Diagnostics\CodeAnalysis\DynamicallyAccessedMemberTypes.cs" />
-    <Compile Include="$(CoreLibSharedDir)System\Diagnostics\CodeAnalysis\RequiresUnreferencedCodeAttribute.cs" />
   </ItemGroup>
-</Project>
+  <ItemGroup>
+    <ProjectReference Include="$(LibrariesProjectRoot)System.ComponentModel\ref\System.ComponentModel.csproj" />
+    <ProjectReference Include="$(LibrariesProjectRoot)System.ComponentModel.TypeConverter\ref\System.ComponentModel.TypeConverter.csproj" />
+    <ProjectReference Include="$(LibrariesProjectRoot)System.Runtime\ref\System.Runtime.csproj" />
+  </ItemGroup>
+</Project>

src/libraries/System.ComponentModel.Annotations/src/System.ComponentModel.Annotations.csproj

@@ -1,7 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>$(NetCoreAppCurrent);netstandard2.1</TargetFrameworks>
-    <ExcludeCurrentNetCoreAppFromPackage>true</ExcludeCurrentNetCoreAppFromPackage>
+    <TargetFrameworks>$(NetCoreAppCurrent)</TargetFrameworks>
     <Nullable>enable</Nullable>
     <!--
       Since many resource strings in this library are shown to an end-user,
@@ -60,13 +59,7 @@
     <Compile Include="$(CommonPath)System\NotImplemented.cs"
              Link="Common\System\NotImplemented.cs" />
   </ItemGroup>
-  <ItemGroup Condition="$([MSBuild]::GetTargetFrameworkIdentifier('$(TargetFramework)')) != '.NETCoreApp'">
-    <Compile Include="$(CoreLibSharedDir)System\Diagnostics\CodeAnalysis\DynamicallyAccessedMembersAttribute.cs" />
-    <Compile Include="$(CoreLibSharedDir)System\Diagnostics\CodeAnalysis\DynamicallyAccessedMemberTypes.cs" />
-    <Compile Include="$(CoreLibSharedDir)System\Diagnostics\CodeAnalysis\RequiresUnreferencedCodeAttribute.cs" />
-    <Compile Include="$(CoreLibSharedDir)System\Diagnostics\CodeAnalysis\UnconditionalSuppressMessageAttribute.cs" />
-  </ItemGroup>
-  <ItemGroup Condition="$([MSBuild]::GetTargetFrameworkIdentifier('$(TargetFramework)')) == '.NETCoreApp'">
+  <ItemGroup>
     <Reference Include="System.Collections" />
     <Reference Include="System.Collections.Concurrent" />
     <Reference Include="System.ComponentModel" />

src/libraries/pkg/baseline/packageIndex.json

@@ -2030,7 +2030,7 @@
         "4.6.0",
         "5.0.0"
       ],
-      "BaselineVersion": "6.0.0",
+      "BaselineVersion": "5.0.0",
       "InboxOn": {
         "netcoreapp2.0": "4.2.0.0",
         "netcoreapp2.1": "4.2.1.0",
@@ -2059,8 +2059,7 @@
         "4.2.0.0": "4.4.0",
         "4.2.1.0": "4.5.0",
         "4.3.0.0": "4.6.0",
-        "5.0.0.0": "5.0.0",
-        "6.0.0.0": "6.0.0"
+        "5.0.0.0": "5.0.0"
       }
     },
     "System.ComponentModel.Composition": {