build perf

Ix.NET/Source/Directory.build.props

@@ -13,17 +13,14 @@
     <NoWarn>$(NoWarn);1701;1702;CS1591;NU5105</NoWarn>
     <DefaultLanguage>en-US</DefaultLanguage>
     <IsTestProject>$(MSBuildProjectName.Contains('Test'))</IsTestProject>
-    <DebugType Condition="'$(Configuration)' != 'Debug'">embedded</DebugType>
     <EmbedUntrackedSources>true</EmbedUntrackedSources>
     <PublishRepositoryUrl>true</PublishRepositoryUrl>
-    <!-- While in beta, we need to set preview for 8.0 manually (rather than latest). -->
     <LangVersion>preview</LangVersion>
     <Nullable>enable</Nullable>
   </PropertyGroup>
 
   <PropertyGroup Condition="'$(TF_BUILD)' == 'true'">
     <ContinuousIntegrationBuild>true</ContinuousIntegrationBuild>
-    <Deterministic>true</Deterministic>
   </PropertyGroup>
 
   <ItemGroup>

Ix.NET/Source/Directory.build.targets

@@ -1,16 +1,5 @@
 <Project>
 
-  <!-- Workaround. Remove once we're on 3.1.300+
-  https://github.com/dotnet/sourcelink/issues/572 -->
-  <PropertyGroup>
-    <TargetFrameworkMonikerAssemblyAttributesPath>$([System.IO.Path]::Combine('$(IntermediateOutputPath)','$(TargetFrameworkMoniker).AssemblyAttributes$(DefaultLanguageSourceExtension)'))</TargetFrameworkMonikerAssemblyAttributesPath>
-  </PropertyGroup>
-  <ItemGroup>
-    <EmbeddedFiles Include="$(GeneratedAssemblyInfoFile)"/>
-  </ItemGroup>
-
-
-
   <!-- This props all need to be set in targets as they depend on the values set earlier -->
   <PropertyGroup Condition="'$(TargetFramework)' == 'netstandard1.0'">
     <DefineConstants>$(DefineConstants);NO_ARRAY_EMPTY;NO_CODE_COVERAGE_ATTRIBUTE</DefineConstants>
@@ -29,4 +18,14 @@
     <Product>$(AssemblyName) ($(TargetFramework))</Product>
   </PropertyGroup>
 
+  <!-- Remove once coverlet supports this built-in -->
+  <Target Name="CoverletGetPathMap"
+          DependsOnTargets="InitializeSourceRootMappedPaths"
+          Returns="@(_LocalTopLevelSourceRoot)"
+          Condition="'$(DeterministicSourcePaths)' == 'true'">
+    <ItemGroup>
+      <_LocalTopLevelSourceRoot Include="@(SourceRoot)" Condition="'%(SourceRoot.NestedRoot)' == ''"/>
+    </ItemGroup>
+  </Target>
+
 </Project>

azure-pipelines.ix.yml

@@ -33,10 +33,10 @@ stages:
   - job: Build
     steps:
     - task: UseDotNet@2
-      displayName: Use .NET Core 3.1.x SDK
+      displayName: Use .NET Core 5.0.x SDK
       inputs:
-        version: 3.1.x
-        performMultiLevelLookup: true
+        version: 5.0.x
+        includePreviewVersions: true
 
     - task: DotNetCoreCLI@2
       inputs:
@@ -74,7 +74,7 @@ stages:
       inputs:
         command: test
         projects: Ix.NET/Source/**/*.Tests.csproj
-        arguments: -c $(BuildConfiguration) --settings Ix.NET/Source/CodeCoverage.runsettings --collect:"XPlat Code Coverage" /t:rebuild /p:ContinuousIntegrationBuild=false -- RunConfiguration.DisableAppDomain=true
+        arguments: -c $(BuildConfiguration) --settings Ix.NET/Source/CodeCoverage.runsettings --collect:"XPlat Code Coverage" -- RunConfiguration.DisableAppDomain=true
       displayName: Run Tests
 
     - script: reportgenerator -reports:$(Agent.TempDirectory)/**/coverage.cobertura.xml -targetdir:$(Build.SourcesDirectory)/Ix.NET/Source/coverlet/reports -reporttypes:"Cobertura"
@@ -94,12 +94,6 @@ stages:
       displayName: Publish artifacts
       artifact: BuildPackages
 
-    - task: PublishPipelineArtifact@0
-      displayName: Publish Code Coverage XML
-      inputs:
-        artifactName: Coverage Report XML
-        targetPath: $(Build.SourcesDirectory)/Ix.NET/Source/coverlet/reports/Cobertura.xml
-
 - stage: CodeSign
   condition: and(succeeded('Build'), not(eq(variables['build.reason'], 'PullRequest')))
   jobs: