Correct and centralize a couple of conditions

- add `$(IgnorePackageBaselines)` property

Directory.Build.targets

@@ -60,11 +60,11 @@
 
   <PropertyGroup Condition=" '$(IsPackable)' != 'false' AND '$(AspNetCorePatchVersion)' != '0' ">
     <!--
-      For now at least, build entire repo to settle the infrastructure and ignore out-of-date package baselines. May
-      revisit after aspnet/AspNetCore#12702 is complete.
+      Build entire repo while we settle the infrastructure; ignore PatchConfig.props.
+      Do _not_ do this when stabilizing versions.
     -->
     <IsPackageInThisPatch
-        Condition="'$(IsPackageInThisPatch)' == '' AND '$(IsServicingBuild)' == 'true' AND '$(StabilizePackageVersion)' != 'true'">true</IsPackageInThisPatch>
+        Condition="'$(IsPackageInThisPatch)' == '' AND '$(StabilizePackageVersion)' != 'true'">true</IsPackageInThisPatch>
     <IsPackageInThisPatch Condition="'$(IsPackageInThisPatch)' == ''">$(PackagesInPatch.Contains(' $(PackageId);'))</IsPackageInThisPatch>
   </PropertyGroup>
 

eng/Versions.props

@@ -26,6 +26,11 @@
     <AspNetCoreMajorMinorVersion>$(AspNetCoreMajorVersion).$(AspNetCoreMinorVersion)</AspNetCoreMajorMinorVersion>
     <!-- Additional assembly attributes are already configured to include the source revision ID. -->
     <IncludeSourceRevisionInInformationalVersion>false</IncludeSourceRevisionInInformationalVersion>
+    <!--
+      Until package baselines are updated (see aspnet/AspNetCore#12702), ignore them.
+      Do _not_ do this when stabilizing versions.
+    -->
+    <IgnorePackageBaselines Condition=" '$(StabilizePackageVersion)' != 'true' ">true</IgnorePackageBaselines>
     <!-- Servicing builds have different characteristics for the way dependencies, baselines, and versions are handled. -->
     <IsServicingBuild Condition=" '$(PreReleaseVersionLabel)' == 'servicing' ">true</IsServicingBuild>
     <VersionPrefix>$(AspNetCoreMajorVersion).$(AspNetCoreMinorVersion).$(AspNetCorePatchVersion)</VersionPrefix>

eng/targets/Packaging.targets

@@ -1,11 +1,7 @@
 <Project>
 
-  <!--
-    For now at least, disable this check and ignore out-of-date package baselines.
-    Revisit after aspnet/AspNetCore#12702 is complete.
-  -->
   <Target Name="EnsureBaselineIsUpdated"
-          Condition="'$(IsServicingBuild)' == 'true' AND '$(StabilizePackageVersion)' != 'true' AND '$(AspNetCoreBaselineVersion)' != '$(PreviousAspNetCoreReleaseVersion)'"
+          Condition="'$(IsServicingBuild)' == 'true' AND '$(IgnorePackageBaselines)' != 'true' AND '$(AspNetCoreBaselineVersion)' != '$(PreviousAspNetCoreReleaseVersion)'"
           BeforeTargets="BeforeBuild">
     <Error Text="The package baseline ($(AspNetCoreBaselineVersion)) is out of date with the latest release of this repo ($(PreviousAspNetCoreReleaseVersion)).
                  See $(RepoRoot)eng\tools\BaselineGenerator\README.md for instructions on updating this baseline." />

eng/targets/ResolveReferences.targets

@@ -45,7 +45,8 @@
         * when a project is a test or sample project
       We don't use project references between components in servicing builds between compontents to preserve the baseline as much as possible.
     -->
-    <UseProjectReferences Condition=" '$(UseProjectReferences)' == '' AND '$(IsServicingBuild)' != 'true'  ">true</UseProjectReferences>
+    <UseProjectReferences Condition=" '$(UseProjectReferences)' == '' AND '$(IgnorePackageBaselines)' == 'true' ">true</UseProjectReferences>
+    <UseProjectReferences Condition=" '$(UseProjectReferences)' == '' AND '$(IsServicingBuild)' != 'true' ">true</UseProjectReferences>
     <UseProjectReferences Condition=" '$(UseProjectReferences)' == '' AND '$(IsImplementationProject)' != 'true' ">true</UseProjectReferences>
     <UseProjectReferences Condition=" '$(UseProjectReferences)' == '' ">false</UseProjectReferences>