Add fsi to proto build, move version validation to ci only (#6387)

Author: KevinRansom

eng/Build.ps1

@@ -189,10 +189,10 @@ function UpdatePath() {
 }
 
 function VerifyAssemblyVersions() {
-    $fsiPath = Join-Path $ArtifactsDir "bin\fsi\$configuration\net46\fsi.exe"
+    $fsiPath = Join-Path $ArtifactsDir "bin\fsi\Proto\net46\fsi.exe"
 
-    # desktop fsi isn't always built
-    if (Test-Path $fsiPath) {
+    # Only verify versions on CI or official build
+    if ($ci -or $official) {
         $asmVerCheckPath = "$RepoRoot\scripts"
         Exec-Console $fsiPath """$asmVerCheckPath\AssemblyVersionCheck.fsx"" -- ""$ArtifactsDir"""
     }

eng/build-utils.ps1

@@ -249,9 +249,7 @@ function Make-BootstrapBuild() {
     $projectPath = "$RepoRoot\proto.proj"
     Run-MSBuild $projectPath "/restore /t:Build" -logFileName "Bootstrap" -configuration $bootstrapConfiguration
     Copy-Item "$ArtifactsDir\bin\fsc\$bootstrapConfiguration\$bootstrapTfm\*" -Destination $dir
-
-    Write-Host "Cleaning Bootstrap compiler artifacts"
-    Run-MSBuild $projectPath "/t:Clean" -logFileName "BootstrapClean" -configuration $bootstrapConfiguration
+    Copy-Item "$ArtifactsDir\bin\fsi\$bootstrapConfiguration\$bootstrapTfm\*" -Destination $dir
 
     return $dir
 }

proto.proj

@@ -14,6 +14,10 @@
       <AdditionalProperties Condition="'$(OS)' != 'Unix'">TargetFramework=net46</AdditionalProperties>
       <AdditionalProperties Condition="'$(OS)' == 'Unix'">TargetFramework=netcoreapp2.1</AdditionalProperties>
     </Projects>
+    <Projects Include="src\fsharp\fsi\fsi.fsproj">
+      <AdditionalProperties Condition="'$(OS)' != 'Unix'">TargetFramework=net46</AdditionalProperties>
+      <AdditionalProperties Condition="'$(OS)' == 'Unix'">TargetFramework=netcoreapp2.1</AdditionalProperties>
+    </Projects>
   </ItemGroup>
 
   <Target Name="Build">