From a8dac84587d84bd5d096fb117a304a2d77dec979 Mon Sep 17 00:00:00 2001
From: Jason Larabie <jason@clockworklabs.io>
Date: Thu, 5 Mar 2026 14:59:40 -0800
Subject: [PATCH 1/3] Forcing LLVM packages to always be available as it seems
 dotnet restore won't pick up the chain of depedencies through the .nupkg

---
 crates/bindings-csharp/Runtime/Runtime.csproj             | 8 ++++++++
 .../Runtime/build/SpacetimeDB.Runtime.targets             | 8 ++++----
 2 files changed, 12 insertions(+), 4 deletions(-)

diff --git a/crates/bindings-csharp/Runtime/Runtime.csproj b/crates/bindings-csharp/Runtime/Runtime.csproj
index 036167a1c45..fba955cb724 100644
--- a/crates/bindings-csharp/Runtime/Runtime.csproj
+++ b/crates/bindings-csharp/Runtime/Runtime.csproj
@@ -12,6 +12,7 @@
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
     <RootNamespace>SpacetimeDB</RootNamespace>
     <EmitCompilerGeneratedFiles>true</EmitCompilerGeneratedFiles>
+    <RestoreAdditionalProjectSources>https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-experimental/nuget/v3/index.json;$(RestoreAdditionalProjectSources)</RestoreAdditionalProjectSources>
   </PropertyGroup>
 
   <ItemGroup>
@@ -25,6 +26,13 @@
     <ProjectReference Include="../Codegen/Codegen.csproj" ReferenceOutputAssembly="false" />
   </ItemGroup>
 
+  <!-- These must be explicit package dependencies so NuGet consumers can resolve the LLVM toolchain. -->
+  <ItemGroup>
+    <PackageReference Include="Microsoft.DotNet.ILCompiler.LLVM" Version="8.0.0-*" IncludeAssets="All" />
+    <PackageReference Include="runtime.$(NETCoreSdkPortableRuntimeIdentifier).Microsoft.DotNet.ILCompiler.LLVM" Version="8.0.0-*" IncludeAssets="All" />
+    <PackageReference Include="Microsoft.NET.ILLink.Tasks" Version="8.0.0-*" Condition="'$(ILLinkTargetsPath)' == ''" IncludeAssets="All" />
+  </ItemGroup>
+
   <ItemGroup>
     <None Include="README.md" Pack="true" PackagePath="" />
     <None Include="build/*" Pack="true" PackagePath="build" />
diff --git a/crates/bindings-csharp/Runtime/build/SpacetimeDB.Runtime.targets b/crates/bindings-csharp/Runtime/build/SpacetimeDB.Runtime.targets
index aa412113b31..5f183e0e040 100644
--- a/crates/bindings-csharp/Runtime/build/SpacetimeDB.Runtime.targets
+++ b/crates/bindings-csharp/Runtime/build/SpacetimeDB.Runtime.targets
@@ -1,5 +1,9 @@
 <Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
 
+  <Import
+      Project="$(PkgMicrosoft_DotNet_ILCompiler_LLVM)\build\Microsoft.DotNet.ILCompiler.LLVM.targets"
+      Condition="'$(EXPERIMENTAL_WASM_AOT)' == '1' and '$(ILCompilerTargetsPath)' == '' and '$(PkgMicrosoft_DotNet_ILCompiler_LLVM)' != '' and Exists('$(PkgMicrosoft_DotNet_ILCompiler_LLVM)\build\Microsoft.DotNet.ILCompiler.LLVM.targets')" />
+
   <ItemGroup Condition="'$(EXPERIMENTAL_WASM_AOT)' == '1'">
     <NativeLibrary Include="$(MSBuildThisFileDirectory)..\bindings.c" />
     <UnmanagedEntryPointsAssembly Include="SpacetimeDB.Runtime" />
@@ -42,10 +46,6 @@
     <WasmImport Include="spacetime_10.4!datastore_index_scan_point_bsatn" />
     <WasmImport Include="spacetime_10.4!datastore_delete_by_index_scan_point_bsatn" />
 
-    <PackageReference Include="Microsoft.DotNet.ILCompiler.LLVM" Version="8.0.0-*" />
-    <PackageReference Include="runtime.$(NETCoreSdkPortableRuntimeIdentifier).Microsoft.DotNet.ILCompiler.LLVM" Version="8.0.0-*" />
-    <PackageReference Include="Microsoft.NET.ILLink.Tasks" Version="8.0.0-*" Condition="'$(ILLinkTargetsPath)' == ''" />
-
     <CustomLinkerArg Include="-DEXPERIMENTAL_WASM_AOT" />
   </ItemGroup>
 

From adbcada46be79b0e5c08b7aadc7c7bb65bb52305 Mon Sep 17 00:00:00 2001
From: rekhoff <r.ekhoff@clockworklabs.io>
Date: Thu, 5 Mar 2026 19:48:28 -0800
Subject: [PATCH 2/3] Updating nuget config writer script with `NativeAOT-LLM`
 support

---
 sdks/csharp/tools~/write-nuget-config.sh | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/sdks/csharp/tools~/write-nuget-config.sh b/sdks/csharp/tools~/write-nuget-config.sh
index 9997cd219ff..69286284ad8 100755
--- a/sdks/csharp/tools~/write-nuget-config.sh
+++ b/sdks/csharp/tools~/write-nuget-config.sh
@@ -15,6 +15,8 @@ cat >NuGet.Config <<EOF
 <configuration>
   <packageSources>
     <clear />
+    <!-- Experimental NuGet feed for Microsoft.DotNet.ILCompiler.LLVM packages -->
+	<add key="dotnet-experimental" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-experimental/nuget/v3/index.json" />
     <!-- Local NuGet repositories -->
     <add key="Local SpacetimeDB.BSATN.Runtime" value="${SPACETIMEDB_REPO_PATH}/crates/bindings-csharp/BSATN.Runtime/bin/Release" />
     <!-- We need to override the module runtime as well because the examples use it -->
@@ -30,6 +32,11 @@ cat >NuGet.Config <<EOF
     <packageSource key="Local SpacetimeDB.Runtime">
       <package pattern="SpacetimeDB.Runtime" />
     </packageSource>
+    <!-- Experimental packages for NativeAOT-LLVM compilation -->
+    <packageSource key="dotnet-experimental">
+      <package pattern="Microsoft.DotNet.ILCompiler.LLVM" />
+      <package pattern="runtime.*" />
+    </packageSource>
     <!-- Fallback for other packages (e.g. test deps). -->
     <packageSource key="nuget.org">
       <package pattern="*" />
@@ -43,6 +50,8 @@ cat >"${SPACETIMEDB_REPO_PATH}/NuGet.Config" <<EOF
 <configuration>
   <packageSources>
     <clear />
+    <!-- Experimental NuGet feed for Microsoft.DotNet.ILCompiler.LLVM packages -->
+	<add key="dotnet-experimental" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-experimental/nuget/v3/index.json" />
     <!-- Local NuGet repositories -->
     <add key="Local SpacetimeDB.BSATN.Runtime" value="crates/bindings-csharp/BSATN.Runtime/bin/Release" />
     <!-- We need to override the module runtime as well because the examples use it -->
@@ -58,6 +67,11 @@ cat >"${SPACETIMEDB_REPO_PATH}/NuGet.Config" <<EOF
     <packageSource key="Local SpacetimeDB.Runtime">
       <package pattern="SpacetimeDB.Runtime" />
     </packageSource>
+    <!-- Experimental packages for NativeAOT-LLVM compilation -->
+    <packageSource key="dotnet-experimental">
+      <package pattern="Microsoft.DotNet.ILCompiler.LLVM" />
+      <package pattern="runtime.*" />
+    </packageSource>
     <!-- Fallback for other packages (e.g. test deps). -->
     <packageSource key="nuget.org">
       <package pattern="*" />

From d5ef9fb1c0c441f4d4d812577a49847a3fa8f2a5 Mon Sep 17 00:00:00 2001
From: rekhoff <r.ekhoff@clockworklabs.io>
Date: Tue, 10 Mar 2026 13:18:41 -0700
Subject: [PATCH 3/3] Created conditional for `EXPERIMENTAL_WASM_AOT` specific
 packages in C# Runtime

---
 crates/bindings-csharp/Runtime/Runtime.csproj | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/crates/bindings-csharp/Runtime/Runtime.csproj b/crates/bindings-csharp/Runtime/Runtime.csproj
index fba955cb724..eb7a4f05fde 100644
--- a/crates/bindings-csharp/Runtime/Runtime.csproj
+++ b/crates/bindings-csharp/Runtime/Runtime.csproj
@@ -12,7 +12,7 @@
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
     <RootNamespace>SpacetimeDB</RootNamespace>
     <EmitCompilerGeneratedFiles>true</EmitCompilerGeneratedFiles>
-    <RestoreAdditionalProjectSources>https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-experimental/nuget/v3/index.json;$(RestoreAdditionalProjectSources)</RestoreAdditionalProjectSources>
+    <RestoreAdditionalProjectSources Condition="'$(EXPERIMENTAL_WASM_AOT)' == '1'">https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-experimental/nuget/v3/index.json;$(RestoreAdditionalProjectSources)</RestoreAdditionalProjectSources>
   </PropertyGroup>
 
   <ItemGroup>
@@ -27,7 +27,7 @@
   </ItemGroup>
 
   <!-- These must be explicit package dependencies so NuGet consumers can resolve the LLVM toolchain. -->
-  <ItemGroup>
+  <ItemGroup Condition="'$(EXPERIMENTAL_WASM_AOT)' == '1'">
     <PackageReference Include="Microsoft.DotNet.ILCompiler.LLVM" Version="8.0.0-*" IncludeAssets="All" />
     <PackageReference Include="runtime.$(NETCoreSdkPortableRuntimeIdentifier).Microsoft.DotNet.ILCompiler.LLVM" Version="8.0.0-*" IncludeAssets="All" />
     <PackageReference Include="Microsoft.NET.ILLink.Tasks" Version="8.0.0-*" Condition="'$(ILLinkTargetsPath)' == ''" IncludeAssets="All" />