diff --git a/src/Qir/Runtime/build-qir-runtime.ps1 b/src/Qir/Runtime/build-qir-runtime.ps1
index d9e8f6e06df..f9c1ee2aa06 100644
--- a/src/Qir/Runtime/build-qir-runtime.ps1
+++ b/src/Qir/Runtime/build-qir-runtime.ps1
@@ -6,3 +6,18 @@
 if (-not (Build-CMakeProject $PSScriptRoot "QIR Runtime")) {
     throw "At least one project failed to compile. Check the logs."
 }
+
+# Copy the results of runtime compilation and the corresponding headers to the drops folder so
+# they can be included in pipeline artifacts.
+$qirDropsFolder = (Join-Path $Env:DROPS_DIR QIR)
+$qirDropsBin = (Join-Path $qirDropsFolder bin)
+$qirDropsInclude = (Join-Path $qirDropsFolder include)
+if (-not (Test-Path $qirDropsFolder)) {
+    New-Item -Path $qirDropsFolder -ItemType "directory"
+    New-Item -Path $qirDropsBin -ItemType "directory"
+    New-Item -Path $qirDropsInclude -ItemType "directory"
+}
+$qirBinaries = (Join-Path $PSScriptRoot build $Env:BUILD_CONFIGURATION bin *)
+$qirIncludes = (Join-Path $PSScriptRoot public *)
+Copy-Item $qirBinaries $qirDropsBin
+Copy-Item $qirIncludes $qirDropsInclude
\ No newline at end of file
diff --git a/src/Qir/Runtime/lib/QIR/bridge-rt.ll b/src/Qir/Runtime/lib/QIR/bridge-rt.ll
index c792e72cb82..3c54b56506e 100644
--- a/src/Qir/Runtime/lib/QIR/bridge-rt.ll
+++ b/src/Qir/Runtime/lib/QIR/bridge-rt.ll
@@ -80,6 +80,7 @@ declare void @llvm.va_end(i8*)
 declare i8* @quantum__rt__tuple_create(i64)
 declare void @quantum__rt__tuple_update_reference_count(i8*, i32)
 declare void @quantum__rt__tuple_update_alias_count(i8*, i32)
+declare i8* @quantum__rt__tuple_copy(i8*, i1)
 
 declare void @quantum__rt__callable_update_reference_count(%"struct.QirCallable"*, i32)
 declare %"struct.QirCallable"* @quantum__rt__callable_create(void (i8*, i8*, i8*)**, void (i8*, i64)**, i8*)
@@ -341,6 +342,13 @@ define dllexport void @__quantum__rt__tuple_update_alias_count(%Tuple* %.th, i32
   ret void
 }
 
+define dllexport %Tuple* @__quantum__rt__tuple_copy(%Tuple* %.th, i1 %force) {
+  %th = bitcast %Tuple* %.th to i8*
+  %th2 = call i8* @quantum__rt__tuple_copy(i8* %th, i1 %force)
+  %.th2 = bitcast i8* %th2 to %Tuple*
+  ret %Tuple* %.th2
+}
+
 ;------------------------------------------------------------------------------
 ; callables bridge
 ;
diff --git a/src/Qir/Runtime/prerequisites.ps1 b/src/Qir/Runtime/prerequisites.ps1
index 72ae1b5079c..9e704cde689 100644
--- a/src/Qir/Runtime/prerequisites.ps1
+++ b/src/Qir/Runtime/prerequisites.ps1
@@ -4,10 +4,14 @@
 if ($Env:ENABLE_QIRRUNTIME -ne "false") {
     if (($IsWindows) -or ((Test-Path Env:AGENT_OS) -and ($Env:AGENT_OS.StartsWith("Win")))) {
         if (!(Get-Command clang -ErrorAction SilentlyContinue)) {
-            choco install llvm
+            choco install llvm --version=11.1.0
             choco install ninja
         }
     } elseif ($IsMacOS) {
+        # temporary workaround for Bintray sunset
+        # remove this after Homebrew is updated to 3.1.1 on MacOS image, see:
+        # https://github.com/actions/virtual-environments/blob/main/images/macos/macos-10.15-Readme.md
+        brew update
         brew install ninja
     } else {
         sudo apt update
diff --git a/src/Simulation/Core/IQuantumMachine.cs b/src/Simulation/Core/Submitters/IQuantumMachine.cs
similarity index 100%
rename from src/Simulation/Core/IQuantumMachine.cs
rename to src/Simulation/Core/Submitters/IQuantumMachine.cs
diff --git a/src/Simulation/Core/IQuantumMachineExecutionContext.cs b/src/Simulation/Core/Submitters/IQuantumMachineExecutionContext.cs
similarity index 100%
rename from src/Simulation/Core/IQuantumMachineExecutionContext.cs
rename to src/Simulation/Core/Submitters/IQuantumMachineExecutionContext.cs
diff --git a/src/Simulation/Core/IQuantumMachineJob.cs b/src/Simulation/Core/Submitters/IQuantumMachineJob.cs
similarity index 100%
rename from src/Simulation/Core/IQuantumMachineJob.cs
rename to src/Simulation/Core/Submitters/IQuantumMachineJob.cs
diff --git a/src/Simulation/Core/IQuantumMachineOutput.cs b/src/Simulation/Core/Submitters/IQuantumMachineOutput.cs
similarity index 100%
rename from src/Simulation/Core/IQuantumMachineOutput.cs
rename to src/Simulation/Core/Submitters/IQuantumMachineOutput.cs
diff --git a/src/Simulation/Core/IQuantumMachineSubmissionContext.cs b/src/Simulation/Core/Submitters/IQuantumMachineSubmissionContext.cs
similarity index 100%
rename from src/Simulation/Core/IQuantumMachineSubmissionContext.cs
rename to src/Simulation/Core/Submitters/IQuantumMachineSubmissionContext.cs
diff --git a/src/Simulation/Native/prerequisites.ps1 b/src/Simulation/Native/prerequisites.ps1
index e7f32efff04..3f1272ffa84 100644
--- a/src/Simulation/Native/prerequisites.ps1
+++ b/src/Simulation/Native/prerequisites.ps1
@@ -4,6 +4,10 @@
 if (($IsMacOS) -or ((Test-Path Env:AGENT_OS) -and ($Env:AGENT_OS.StartsWith("Darwin")))) {
     # building with gcc-9 succeeds but some of the unit tests fail
     Write-Host "Install gcc-7 as pre-req for building native simulator on MacOS"
+    # temporary workaround for Bintray sunset
+    # remove this after Homebrew is updated to 3.1.1 on MacOS image, see:
+    # https://github.com/actions/virtual-environments/blob/main/images/macos/macos-10.15-Readme.md
+    brew update
     brew install gcc@7
 } else {
     Write-Host "No pre-reqs for building native simulator on platforms other than MacOS"