Fsharp integration january 2020 (#919)

Contains commits from 32b1249 to 5a01170 from dotnet/fsharp.

Notable features:

* lowered allocations for large strings and char arrays (notable source file texts)
* improved support for byreflike rules with regards to type abbreviations
* better support for scopes in recursive modules
* better location of .net core reference assemblies
* lowered allocations for several internal compiler structures
* better error messages for anonymous record mismatches
* FSharpChecker learned how to keep background symbol uses
* Project cracker/project cracker tool were removed
* Better support for consuming C# inref parameters
* preview-level functionality for #r "nuget" in scripts

Author: baronfel

Diff for: .gitignore

@@ -9,7 +9,6 @@ artifacts/
 # Patches that may have been generated by scripts.
 # (These aren't generally useful to commit directly; if anything, they should be applied.)
 scripts/*.patch
-
 /fcs/FSharp.Compiler.Service/illex.fs
 /fcs/FSharp.Compiler.Service/ilpars.fs
 /fcs/FSharp.Compiler.Service/ilpars.fsi
@@ -234,7 +233,6 @@ lib/netcore/fsc/bin/
 msbuild.binlog
 /fcs/FSharp.Compiler.Service.netstandard/*.fs
 /fcs/FSharp.Compiler.Service.netstandard/*.fsi
-
 .ionide
 .vscode
 **/.DS_Store

Diff for: FSharpBuild.Directory.Build.targets

@@ -1,4 +1,5 @@
 <Project>
+
   <Import Project="Sdk.targets" Sdk="Microsoft.DotNet.Arcade.Sdk" />
   <Import Project="eng\targets\Imports.targets" />
   <Import Project="eng\targets\NuGet.targets" />
@@ -8,28 +9,32 @@
   <Target Name="NoneSubstituteTextFiles"
           Inputs="@(NoneSubstituteText)"
           Outputs="@(NoneSubstituteText->'$(IntermediateOutputPath)%(Filename)%(Extension)')"
-          BeforeTargets="AssignTargetPaths;BeforeBuild">
+          BeforeTargets="AssignTargetPaths;BeforeBuild;GenerateFSharpTextResources">
 
     <PropertyGroup>
       <__TargetFilePath>@(NoneSubstituteText->'$(IntermediateOutputPath)%(Filename)%(Extension)')</__TargetFilePath>
       <__TargetFileName>@(NoneSubstituteText->'%(Filename)%(Extension)')</__TargetFileName>
+      <__TargetLink>@(NoneSubstituteText->'%(Link)')</__TargetLink>
 
       <_ReplacementText>$([System.IO.File]::ReadAllText('%(NoneSubstituteText.FullPath)'))</_ReplacementText>
       <_ReplacementText Condition="'%(NoneSubstituteText.Pattern1)' != ''">$(_ReplacementText.Replace('%(NoneSubstituteText.Pattern1)', '%(NoneSubstituteText.Replacement1)'))</_ReplacementText>
       <_ReplacementText Condition="'%(NoneSubstituteText.Pattern2)' != ''">$(_ReplacementText.Replace('%(NoneSubstituteText.Pattern2)', '%(NoneSubstituteText.Replacement2)'))</_ReplacementText>
 
       <_CopyToOutputDirectory Condition="'%(NoneSubstituteText.CopyToOutputDirectory)' != ''">%(NoneSubstituteText.CopyToOutputDirectory)</_CopyToOutputDirectory>
       <_CopyToOutputDirectory Condition="'%(NoneSubstituteText.CopyToOutputDirectory)' == ''">Never</_CopyToOutputDirectory>
+
+      <_IncludeInVsix>false</_IncludeInVsix>
+      <_IncludeInVsix Condition="'%(NoneSubstituteText.IncludeInVsix)' == 'true'">true</_IncludeInVsix>
     </PropertyGroup>
 
     <MakeDir Directories="$(IntermediateOutputPath)"
              Condition="!Exists('$(IntermediateOutputPath)')" />
     <WriteLinesToFile File="$(__TargetFilePath)" Lines="$(_ReplacementText)" Overwrite="true" WriteOnlyWhenDifferent="true" />
 
-    <!-- Make sure it will get cleaned  -->
-    <ItemGroup >
+    <ItemGroup>
       <None Include="$(__TargetFilePath)" CopyToOutputDirectory="$(_CopyToOutputDirectory)" />
       <FileWrites Include="$(__TargetFilePath)" Condition="'$(__TargetFileName)' != 'App.config'" />
+      <Content Include="$(__TargetFilePath)" CopyToOutputDirectory="Always" IncludeInVsix="true" Link="$(__TargetLink)" Condition="'$(_IncludeInVsix)'=='true'" />
     </ItemGroup>
   </Target>
 
@@ -61,4 +66,27 @@
     </ItemGroup>
   </Target>
 
+  <Target Name="BeforeResGen"
+          Inputs="@(EmbeddedResource->'$(IntermediateOutputPath)%(Filename)%(Extension)')"
+          Outputs="@(EmbeddedResource->'$(IntermediateOutputPath)resources\%(Filename)%(Extension)')"
+          DependsOnTargets="CopyVsixResources"
+          Condition="'$(Configuration)' != 'Proto' and '$(Language)'=='F#' and '$(DisableCompilerRedirection)' != 'true' ">
+
+    <SubstituteText EmbeddedResources="@(EmbeddedResource)">
+      <Output TaskParameter="CopiedFiles" ItemName="CopiedFiles" />
+    </SubstituteText>
+
+    <ItemGroup>
+        <EmbeddedResource Remove="@(EmbeddedResource)"/>
+        <EmbeddedResource Include="@(CopiedFiles)"/>
+    </ItemGroup>
+
+    <MakeDir Directories="$(IntermediateOutputPath)" Condition="!Exists('$(IntermediateOutputPath)')" />
+    <MakeDir Directories="$(IntermediateOutputPath)resources\" Condition="!Exists('$(IntermediateOutputPath)resources\')" />
+  </Target>
+
+  <Target Name="CopyVsixResources">
+    <Copy SourceFiles="@(CopyVsixResources)" DestinationFolder="$(IntermediateOutputPath)\resources\Resources" />
+  </Target>
+
 </Project>

Diff for: FSharpTests.Directory.Build.props

@@ -22,18 +22,18 @@
     <FscToolPath>$([System.IO.Path]::GetDirectoryName('$(DOTNET_HOST_PATH)'))</FscToolPath>
     <FscToolExe Condition="'$(OS)' != 'Unix'">dotnet.exe</FscToolExe>
     <FscToolExe Condition="'$(OS)' == 'Unix'">dotnet</FscToolExe>
-    <DotnetFscCompilerPath>$(MSBuildThisFileDirectory)artifacts\bin\fsc\$(Configuration)\netcoreapp2.1\fsc.exe</DotnetFscCompilerPath>
+    <DotnetFscCompilerPath>$(MSBuildThisFileDirectory)artifacts\bin\fsc\$(Configuration)\netcoreapp3.0\fsc.exe</DotnetFscCompilerPath>
 
     <FsiToolPath>$([System.IO.Path]::GetDirectoryName('$(DOTNET_HOST_PATH)'))</FsiToolPath>
     <FsiToolExe Condition="'$(OS)' != 'Unix'">dotnet.exe</FsiToolExe>
     <FsiToolExe Condition="'$(OS)' == 'Unix'">dotnet</FsiToolExe>
-    <DotnetFsiCompilerPath>$(MSBuildThisFileDirectory)artifacts\bin\fsi\$(Configuration)\netcoreapp2.1\fsi.exe</DotnetFsiCompilerPath>
+    <DotnetFsiCompilerPath>$(MSBuildThisFileDirectory)artifacts\bin\fsi\$(Configuration)\netcoreapp3.0\fsi.exe</DotnetFsiCompilerPath>
   </PropertyGroup>
 
   <!-- SDK targets override -->
   <PropertyGroup>
     <_FSharpBuildTargetFramework Condition="'$(MSBuildRuntimeType)'!='Core'">net472</_FSharpBuildTargetFramework>
-    <_FSharpBuildTargetFramework Condition="'$(MSBuildRuntimeType)'=='Core'">netcoreapp2.1</_FSharpBuildTargetFramework>
+    <_FSharpBuildTargetFramework Condition="'$(MSBuildRuntimeType)'=='Core'">netcoreapp3.0</_FSharpBuildTargetFramework>
     <_FSharpBuildBinPath>$(MSBuildThisFileDirectory)artifacts\bin\fsc\$(Configuration)\$(_FSharpBuildTargetFramework)</_FSharpBuildBinPath>
 
     <FSharpBuildAssemblyFile>$(_FSharpBuildBinPath)\FSharp.Build.dll</FSharpBuildAssemblyFile>

Diff for: INTERNAL.md

@@ -43,7 +43,7 @@ near the bottom of the build under the title 'Insert into VS'.  Examine the log
 bottom you'll see a line that looks like `Created request #xxxxxx at https://...`.
 
 To see all insertions created this way (possibly including for other internal teams), check
-[here](https://dev.azure.com/devdiv/DevDiv/_git/VS/pullrequests?creatorId=122d5278-3e55-4868-9d40-1e28c2515fc4&_a=active).
+[here](https://dev.azure.com/devdiv/DevDiv/_git/VS/pullrequests?createdBy=122d5278-3e55-4868-9d40-1e28c2515fc4&_a=active).
 
 ## Less interesting links
 

Diff for: NuGet.config

@@ -7,6 +7,7 @@
   <packageSources>
     <clear />
     <add key="dotnet-core" value="https://dotnetfeed.blob.core.windows.net/dotnet-core/index.json" />
+    <add key="dotnet-eng" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-eng/nuget/v3/index.json" />
     <add key="nuget.org" value="https://api.nuget.org/v3/index.json" />
     <add key="fsharp-daily" value="https://www.myget.org/F/fsharp-daily/api/v3/index.json" />
     <add key="roslyn-master-nightly" value="https://dotnet.myget.org/F/roslyn-master-nightly/api/v3/index.json" />

Diff for: eng/Build.ps1

@@ -50,6 +50,7 @@ param (
     [switch]$testCompiler,
     [switch]$testFSharpCore,
     [switch]$testFSharpQA,
+    [switch]$testScripting,
     [switch]$testVs,
     [switch]$testAll,
     [string]$officialSkipTests = "false",
@@ -59,6 +60,8 @@ param (
 
 Set-StrictMode -version 2.0
 $ErrorActionPreference = "Stop"
+$BuildCategory = ""
+$BuildMessage = ""
 
 function Print-Usage() {
     Write-Host "Common settings:"
@@ -86,6 +89,7 @@ function Print-Usage() {
     Write-Host "  -testCoreClr              Run tests against CoreCLR"
     Write-Host "  -testFSharpCore           Run FSharpCore unit tests"
     Write-Host "  -testFSharpQA             Run F# Cambridge tests"
+    Write-Host "  -testScripting            Run Scripting tests"
     Write-Host "  -testVs                   Run F# editor unit tests"
     Write-Host "  -officialSkipTests <bool> Set to 'true' to skip running tests"
     Write-Host ""
@@ -148,11 +152,11 @@ function Process-Arguments() {
 
 function Update-Arguments() {
     if ($script:noVisualStudio) {
-        $script:bootstrapTfm = "netcoreapp2.1"
+        $script:bootstrapTfm = "netcoreapp3.0"
         $script:msbuildEngine = "dotnet"
     }
 
-    if ($bootstrapTfm -eq "netcoreapp2.1") {
+    if ($bootstrapTfm -eq "netcoreapp3.0") {
         if (-Not (Test-Path "$ArtifactsDir\Bootstrap\fsc\fsc.runtimeconfig.json")) {
             $script:bootstrap = $True
         }
@@ -216,7 +220,7 @@ function UpdatePath() {
     TestAndAddToPath $subdir
 
     # add windows SDK dir for ildasm.exe
-    foreach ($child in Get-ChildItem "${env:ProgramFiles(x86)}\Microsoft SDKs\Windows\v10.0A\bin\NETFX 4.?.? Tools") {
+    foreach ($child in Get-ChildItem "${env:ProgramFiles(x86)}\Microsoft SDKs\Windows\v10.0A\bin\NETFX 4.* Tools") {
         $subdir = $child
     }
     TestAndAddToPath $subdir
@@ -256,7 +260,7 @@ function TestUsingNUnit([string] $testProject, [string] $targetFramework) {
 }
 
 function BuildCompiler() {
-    if ($bootstrapTfm -eq "netcoreapp2.1") {
+    if ($bootstrapTfm -eq "netcoreapp3.0") {
         $dotnetPath = InitializeDotNetCli
         $dotnetExe = Join-Path $dotnetPath "dotnet.exe"
         $fscProject = "$RepoRoot\src\fsharp\fsc\fsc.fsproj"
@@ -265,10 +269,10 @@ function BuildCompiler() {
         $argNoRestore = if ($norestore) { " --no-restore" } else { "" }
         $argNoIncremental = if ($rebuild) { " --no-incremental" } else { "" }
 
-        $args = "build $fscProject -c $configuration -v $verbosity -f netcoreapp2.1" + $argNoRestore + $argNoIncremental
+        $args = "build $fscProject -c $configuration -v $verbosity -f netcoreapp3.0" + $argNoRestore + $argNoIncremental
         Exec-Console $dotnetExe $args
 
-        $args = "build $fsiProject -c $configuration -v $verbosity -f netcoreapp2.1" + $argNoRestore + $argNoIncremental
+        $args = "build $fsiProject -c $configuration -v $verbosity -f netcoreapp3.0" + $argNoRestore + $argNoIncremental
         Exec-Console $dotnetExe $args
     }
 }
@@ -298,6 +302,9 @@ function EnablePreviewSdks() {
 }
 
 try {
+    $script:BuildCategory = "Build"
+    $script:BuildMessage = "Failure preparing build"
+
     Process-Arguments
 
     . (Join-Path $PSScriptRoot "build-utils.ps1")
@@ -309,17 +316,14 @@ try {
     if ($ci) {
         Prepare-TempDir
         EnablePreviewSdks
-
-        # enable us to build netcoreapp2.1 product binaries
-        $global:_DotNetInstallDir = Join-Path $RepoRoot ".dotnet"
-        InstallDotNetSdk $global:_DotNetInstallDir $GlobalJson.tools.dotnet
-        InstallDotNetSdk $global:_DotNetInstallDir "2.1.503"
     }
 
     if ($bootstrap) {
+        $script:BuildMessage = "Failure building bootstrap compiler"
         $bootstrapDir = Make-BootstrapBuild
     }
 
+    $script:BuildMessage = "Failure building product"
     if ($restore -or $build -or $rebuild -or $pack -or $sign -or $publish) {
         if ($noVisualStudio) {
             BuildCompiler
@@ -332,12 +336,13 @@ try {
         VerifyAssemblyVersionsAndSymbols
     }
 
+    $script:BuildCategory = "Test"
+    $script:BuildMessage = "Failure running tests"
     $desktopTargetFramework = "net472"
     $coreclrTargetFramework = "netcoreapp3.0"
 
     if ($testDesktop -and -not $noVisualStudio) {
         TestUsingNUnit -testProject "$RepoRoot\tests\FSharp.Compiler.UnitTests\FSharp.Compiler.UnitTests.fsproj" -targetFramework $desktopTargetFramework
-        TestUsingNUnit -testProject "$RepoRoot\tests\FSharp.Compiler.LanguageServer.UnitTests\FSharp.Compiler.LanguageServer.UnitTests.fsproj" -targetFramework $desktopTargetFramework
         TestUsingNUnit -testProject "$RepoRoot\tests\FSharp.Compiler.Private.Scripting.UnitTests\FSharp.Compiler.Private.Scripting.UnitTests.fsproj" -targetFramework $desktopTargetFramework
         TestUsingNUnit -testProject "$RepoRoot\tests\FSharp.Build.UnitTests\FSharp.Build.UnitTests.fsproj" -targetFramework $desktopTargetFramework
         TestUsingNUnit -testProject "$RepoRoot\tests\FSharp.Core.UnitTests\FSharp.Core.UnitTests.fsproj" -targetFramework $desktopTargetFramework
@@ -346,7 +351,6 @@ try {
 
     if ($testCoreClr) {
         TestUsingNUnit -testProject "$RepoRoot\tests\FSharp.Compiler.UnitTests\FSharp.Compiler.UnitTests.fsproj" -targetFramework $coreclrTargetFramework
-        TestUsingNUnit -testProject "$RepoRoot\tests\FSharp.Compiler.LanguageServer.UnitTests\FSharp.Compiler.LanguageServer.UnitTests.fsproj" -targetFramework $coreclrTargetFramework
         TestUsingNUnit -testProject "$RepoRoot\tests\FSharp.Compiler.Private.Scripting.UnitTests\FSharp.Compiler.Private.Scripting.UnitTests.fsproj" -targetFramework $coreclrTargetFramework
         TestUsingNUnit -testProject "$RepoRoot\tests\FSharp.Build.UnitTests\FSharp.Build.UnitTests.fsproj" -targetFramework $coreclrTargetFramework
         TestUsingNUnit -testProject "$RepoRoot\tests\FSharp.Core.UnitTests\FSharp.Core.UnitTests.fsproj" -targetFramework $coreclrTargetFramework
@@ -394,6 +398,13 @@ try {
         TestUsingNUnit -testProject "$RepoRoot\tests\fsharp\FSharpSuite.Tests.fsproj" -targetFramework $coreclrTargetFramework
     }
 
+    if ($testScripting) {
+        if (-not $noVisualStudio) {
+            TestUsingNUnit -testProject "$RepoRoot\tests\FSharp.Compiler.Private.Scripting.UnitTests\FSharp.Compiler.Private.Scripting.UnitTests.fsproj" -targetFramework $desktopTargetFramework
+        }
+        TestUsingNUnit -testProject "$RepoRoot\tests\FSharp.Compiler.Private.Scripting.UnitTests\FSharp.Compiler.Private.Scripting.UnitTests.fsproj" -targetFramework $coreclrTargetFramework
+    }
+
     if ($testVs -and -not $noVisualStudio) {
         TestUsingNUnit -testProject "$RepoRoot\vsintegration\tests\GetTypesVS.UnitTests\GetTypesVS.UnitTests.fsproj" -targetFramework $desktopTargetFramework
         TestUsingNUnit -testProject "$RepoRoot\vsintegration\tests\UnitTests\VisualFSharp.UnitTests.fsproj" -targetFramework $desktopTargetFramework
@@ -405,6 +416,7 @@ catch {
     Write-Host $_
     Write-Host $_.Exception
     Write-Host $_.ScriptStackTrace
+    Write-PipelineTelemetryError -Category $script:BuildCategory -Message $script:BuildMessage
     ExitWithExitCode 1
 }
 finally {

Diff for: eng/Version.Details.xml

@@ -3,9 +3,9 @@
   <ProductDependencies>
   </ProductDependencies>
   <ToolsetDependencies>
-    <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="5.0.0-beta.19603.17">
+    <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="5.0.0-beta.20057.5">
       <Uri>https://github.com/dotnet/arcade</Uri>
-      <Sha>b902fd6b6948e689a5128fa6d94dc7de13e6af84</Sha>
+      <Sha>d0833c8e5e58cfc507ce3c8da364e55931190263</Sha>
     </Dependency>
   </ToolsetDependencies>
 </Dependencies>

Diff for: eng/Versions.props

@@ -24,7 +24,7 @@
   </PropertyGroup>
   <PropertyGroup>
     <FSPackageMajorVersion>10.7</FSPackageMajorVersion>
-    <FSPackageVersion>$(FSPackageMajorVersion).0</FSPackageVersion>
+    <FSPackageVersion>$(FSPackageMajorVersion).1</FSPackageVersion>
     <FSProductVersionPrefix>$(FSPackageVersion)</FSProductVersionPrefix>
     <FSProductVersion>$(FSPackageVersion).0</FSProductVersion>
   </PropertyGroup>
@@ -68,13 +68,14 @@
     <!-- System.* packages -->
     <SystemCollectionsImmutableVersion>1.5.0</SystemCollectionsImmutableVersion>
     <SystemConsoleVersion>4.3.0</SystemConsoleVersion>
+    <SystemDataSqlClientPackageVersion>4.3.0</SystemDataSqlClientPackageVersion>
     <SystemDesignVersion>4.0.0</SystemDesignVersion>
     <SystemDiagnosticsProcessVersion>4.3.0</SystemDiagnosticsProcessVersion>
     <SystemDiagnosticsTraceSourceVersion>4.3.0</SystemDiagnosticsTraceSourceVersion>
     <SystemIoCompressionVersion>4.3.0</SystemIoCompressionVersion>
     <SystemLinqExpressionsVersion>4.3.0</SystemLinqExpressionsVersion>
     <SystemLinqQueryableVersion>4.3.0</SystemLinqQueryableVersion>
-    <SystemMemoryVersion>4.5.2</SystemMemoryVersion>
+    <SystemMemoryVersion>4.5.3</SystemMemoryVersion>
     <SystemNetRequestsVersion>4.3.0</SystemNetRequestsVersion>
     <SystemNetSecurityVersion>4.3.0</SystemNetSecurityVersion>
     <SystemReflectionEmitVersion>4.3.0</SystemReflectionEmitVersion>
@@ -88,10 +89,13 @@
     <SystemSecurityClaimsVersion>4.3.0</SystemSecurityClaimsVersion>
     <SystemSecurityCryptographyAlgorithmsVersion>4.3.0</SystemSecurityCryptographyAlgorithmsVersion>
     <SystemSecurityPrincipalVersion>4.3.0</SystemSecurityPrincipalVersion>
+    <SystemThreadingTasksDataflowPackageVersion>4.6.0</SystemThreadingTasksDataflowPackageVersion>
     <SystemThreadingTasksParallelVersion>4.3.0</SystemThreadingTasksParallelVersion>
+    <SystemThreadingTasksDataflow>4.11.0</SystemThreadingTasksDataflow>
     <SystemThreadingThreadVersion>4.3.0</SystemThreadingThreadVersion>
     <SystemThreadingThreadPoolVersion>4.3.0</SystemThreadingThreadPoolVersion>
     <SystemValueTupleVersion>4.5.0</SystemValueTupleVersion>
+    <SystemBuffersVersion>4.5.0</SystemBuffersVersion>
     <!-- Roslyn packages -->
     <MicrosoftCodeAnalysisEditorFeaturesVersion>$(RoslynVersion)</MicrosoftCodeAnalysisEditorFeaturesVersion>
     <MicrosoftCodeAnalysisEditorFeaturesTextVersion>$(RoslynVersion)</MicrosoftCodeAnalysisEditorFeaturesTextVersion>
@@ -102,7 +106,7 @@
     <MicrosoftCodeAnalysisTestResourcesProprietaryVersion>2.0.17</MicrosoftCodeAnalysisTestResourcesProprietaryVersion>
     <MicrosoftVisualStudioLanguageServicesVersion>$(RoslynVersion)</MicrosoftVisualStudioLanguageServicesVersion>
     <!-- Microsoft Build packages -->
-    <MicrosoftBuildOverallPackagesVersion>16.0.461</MicrosoftBuildOverallPackagesVersion>
+    <MicrosoftBuildOverallPackagesVersion>16.4</MicrosoftBuildOverallPackagesVersion>
     <MicrosoftBuildVersion>$(MicrosoftBuildOverallPackagesVersion)</MicrosoftBuildVersion>
     <MicrosoftBuildFrameworkVersion>$(MicrosoftBuildOverallPackagesVersion)</MicrosoftBuildFrameworkVersion>
     <MicrosoftBuildTasksCoreVersion>$(MicrosoftBuildOverallPackagesVersion)</MicrosoftBuildTasksCoreVersion>
@@ -118,7 +122,6 @@
     <MicrosoftVisualStudioGraphModelVersion>16.0.28226-alpha</MicrosoftVisualStudioGraphModelVersion>
     <MicrosoftVisualStudioImageCatalogVersion>16.1.28916.169</MicrosoftVisualStudioImageCatalogVersion>
     <MicrosoftVisualStudioImagingVersion>16.1.28917.181</MicrosoftVisualStudioImagingVersion>
-    <MicrosoftVisualStudioLanguageServerClientVersion>16.1.3121</MicrosoftVisualStudioLanguageServerClientVersion>
     <MicrosoftVisualStudioLanguageStandardClassificationVersion>16.1.89</MicrosoftVisualStudioLanguageStandardClassificationVersion>
     <MicrosoftVisualStudioLanguageVersion>16.1.89</MicrosoftVisualStudioLanguageVersion>
     <MicrosoftVisualStudioLanguageIntellisenseVersion>16.1.89</MicrosoftVisualStudioLanguageIntellisenseVersion>

Diff for: eng/build-utils.ps1

@@ -238,9 +238,9 @@ function Make-BootstrapBuild() {
 
     # prepare FsLex and Fsyacc and AssemblyCheck
     Run-MSBuild "$RepoRoot\src\buildtools\buildtools.proj" "/restore /t:Publish /p:PublishWindowsPdb=false" -logFileName "BuildTools" -configuration $bootstrapConfiguration
-    Copy-Item "$ArtifactsDir\bin\fslex\$bootstrapConfiguration\netcoreapp2.1\publish" -Destination "$dir\fslex" -Force -Recurse
-    Copy-Item "$ArtifactsDir\bin\fsyacc\$bootstrapConfiguration\netcoreapp2.1\publish" -Destination "$dir\fsyacc" -Force  -Recurse
-    Copy-Item "$ArtifactsDir\bin\AssemblyCheck\$bootstrapConfiguration\netcoreapp2.1\publish" -Destination "$dir\AssemblyCheck" -Force  -Recurse
+    Copy-Item "$ArtifactsDir\bin\fslex\$bootstrapConfiguration\netcoreapp3.0\publish" -Destination "$dir\fslex" -Force -Recurse
+    Copy-Item "$ArtifactsDir\bin\fsyacc\$bootstrapConfiguration\netcoreapp3.0\publish" -Destination "$dir\fsyacc" -Force  -Recurse
+    Copy-Item "$ArtifactsDir\bin\AssemblyCheck\$bootstrapConfiguration\netcoreapp3.0\publish" -Destination "$dir\AssemblyCheck" -Force  -Recurse
 
     # prepare compiler
     $projectPath = "$RepoRoot\proto.proj"