add tracing of VCINSTALLDIR

Author: Steve Lee (POWERSHELL HE/HIM) (from Dev Box)

.pipelines/DSC-Official.yml

@@ -124,7 +124,7 @@ extends:
             ob_restore_phase: true
         - pwsh: |
             Set-Location "$(Build.SourcesDirectory)/DSC"
-            $env:Path += ";C:\Program Files (x86)\Microsoft Visual Studio\2022\BuildTools\VC\Tools\Llvm\x64\bin"
+            write-verbose -verbose "VCINSTALLDIR: $($env:VCINSTALLDIR)"
             ./build.ps1 -Release -Architecture $(buildName) -SkipLinkCheck
           displayName: 'Build $(buildName)'
           env:
@@ -319,6 +319,7 @@ extends:
             $env:CC_aarch64_unknown_linux_musl='clang'
             $env:AR_aarch64_unknown_linux_musl='llvm-ar'
             $env:CARGO_TARGET_AARCH64_UNKNOWN_LINUX_MUSL_RUSTFLAGS="-Clink-self-contained=yes -Clinker=rust-lld"
+            apt -y install clang
             apt -y install musl-tools
             ./build.ps1 -Release -Architecture aarch64-unknown-linux-musl
             ./build.ps1 -PackageType tgz -Architecture aarch64-unknown-linux-musl -Release