Add support for both wasmtime latest (39.x) and LTS (36.x) versions

Introduces wasmtime_lts feature flag to switch between wasmtime versions.
Default uses latest (39.0.1), pass --lts flag to AOT compiler or enable
wasmtime_lts feature for LTS version (36.0.3). CI updated to test both.

Signed-off-by: James Sturtevant <jsturtevant@gmail.com>

Author: jsturtevant

.github/workflows/Benchmarks.yml

@@ -45,7 +45,7 @@ jobs:
     - name: Download Wasm Modules
       uses: actions/download-artifact@v5
       with:
-        name: guest-modules
+        name: guest-modules-latest
         path: ./x64/${{ matrix.config }}
 
     ### Benchmarks ###

.github/workflows/CreateRelease.yml

@@ -69,7 +69,7 @@ jobs:
     - name: Download Wasm Modules
       uses: actions/download-artifact@v5
       with:
-        name: guest-modules
+        name: guest-modules-latest
         path: ${{ env.PLATFORM }}/${{ env.CONFIG }}
     - name: Build rust wasm modules
       run: just build-rust-wasm-examples ${{ env.CONFIG }}

.github/workflows/dep_build_wasm_examples.yml

@@ -21,19 +21,13 @@ permissions:
   contents: read
 
 jobs:
-    build-wasm-examples:
+    build-docker-image:
       if: ${{ inputs.docs_only == 'false' || github.event_name == 'schedule' || github.event_name == 'workflow_dispatch' }}
       runs-on: ubuntu-latest
       steps:
         - uses: actions/checkout@v5
           with:
             fetch-depth: 0
-        - name: Remove default clang
-          run: sudo rm /usr/bin/clang
-        - name: Hyperlight setup workflow
-          uses: hyperlight-dev/ci-setup-workflow@v1.8.0
-          with:
-            rust-toolchain: "1.89"
         - name: Set up Docker Buildx
           uses: docker/setup-buildx-action@v3
         - name: Login to Registry
@@ -76,15 +70,47 @@ jobs:
             tags: ghcr.io/${{ github.repository_owner }}/wasm-clang-builder:latest
             cache-from: type=registry,ref=ghcr.io/${{ github.repository_owner }}/wasm-clang-builder:buildcache
             cache-to: ${{ env.CACHE_TO }}
-        - name: Build Modules
+
+    build-wasm-examples:
+      needs: build-docker-image
+      runs-on: ubuntu-latest
+      strategy:
+        matrix:
+          wasmtime_version:
+            - name: latest
+              features: ""
+            - name: lts
+              features: "wasmtime_lts"
+      steps:
+        - uses: actions/checkout@v5
+          with:
+            fetch-depth: 0
+        - name: Remove default clang
+          run: sudo rm /usr/bin/clang
+        - name: Hyperlight setup workflow
+          uses: hyperlight-dev/ci-setup-workflow@v1.8.0
+          with:
+            rust-toolchain: "1.89"
+        - name: Set up Docker Buildx
+          uses: docker/setup-buildx-action@v3
+        - name: Login to Registry
+          uses: docker/login-action@v3
+          with:
+            registry: ghcr.io
+            username: ${{ github.actor }}
+            password: ${{ secrets.GITHUB_TOKEN }}
+        - name: Pull wasm-clang-builder
+          run: |
+                docker pull ghcr.io/${{ github.repository_owner }}/wasm-clang-builder:latest
+        - name: Build Modules (wasmtime ${{ matrix.wasmtime_version.name }})
           run: |
             just ensure-tools
-            just build-wasm-examples release
+            just build-wasm-examples release ${{ matrix.wasmtime_version.features }}
           shell: bash
           working-directory:  src/wasmsamples
-        - name: Upload Wasm Modules
+        - name: Upload Wasm Modules (wasmtime ${{ matrix.wasmtime_version.name }})
           uses: actions/upload-artifact@v4
           with:
-            name: guest-modules
+            name: guest-modules-${{ matrix.wasmtime_version.name }}
             path: | 
               x64/release/*.aot

.github/workflows/dep_rust.yml

@@ -40,6 +40,15 @@ jobs:
           hypervisor: [hyperv, mshv3, kvm] # hyperv is windows, mshv and kvm are linux
           cpu: [amd, intel]
           config: [debug, release]
+          wasmtime: [latest, lts]
+          exclude:
+            # Latest testing: skip Windows, Intel, and debug builds to reduce CI load
+            - wasmtime: latest
+              hypervisor: hyperv
+            - wasmtime: latest
+              cpu: intel
+            - wasmtime: latest
+              config: debug
 
     runs-on: ${{ fromJson(
         format('["self-hosted", "{0}", "X64", "1ES.Pool=hld-{1}-{2}"]', 
@@ -70,7 +79,7 @@ jobs:
       - name: Download Wasm Modules
         uses: actions/download-artifact@v5
         with:
-          name: guest-modules
+          name: guest-modules-${{ matrix.wasmtime }}
           path: ./x64/${{ matrix.config }}
 
       - name: Build Rust component model examples
@@ -79,7 +88,7 @@ jobs:
           # because the component model example depends on the wasm component built here
           just ensure-tools
           just compile-wit
-          just build-rust-component-examples ${{ matrix.config }}
+          just build-rust-component-examples ${{ matrix.config }} ${{ matrix.wasmtime == 'lts' && 'wasmtime_lts' || '' }}
       
       - name: Fmt
         run: just fmt-check
@@ -88,15 +97,15 @@ jobs:
         run: just clippy ${{ matrix.config }}
 
       - name: Build
-        run:  just build ${{ matrix.config }}
+        run:  just build ${{ matrix.config }} ${{ matrix.wasmtime == 'lts' && format('{0},wasmtime_lts', matrix.hypervisor) || '' }}
         working-directory: ./src/hyperlight_wasm
 
       - name: Build Rust Wasm examples
-        run:  just build-rust-wasm-examples ${{ matrix.config }}
+        run:  just build-rust-wasm-examples ${{ matrix.config }} ${{ matrix.wasmtime == 'lts' && 'wasmtime_lts' || '' }}
         working-directory: ./src/hyperlight_wasm
 
       - name: Test
-        run:  just test ${{ matrix.config }}
+        run:  just test ${{ matrix.config }} ${{ matrix.wasmtime == 'lts' && format('{0},wasmtime_lts', matrix.hypervisor) || '' }}
         working-directory: ./src/hyperlight_wasm
 
       - name: Install github-cli (Windows)
@@ -114,21 +123,21 @@ jobs:
         shell: pwsh
 
       - name: Test Examples
-        run: just examples-ci ${{ matrix.config }}
+        run: just examples-ci ${{ matrix.config }} ${{ matrix.wasmtime == 'lts' && format('{0},wasmtime_lts', matrix.hypervisor) || '' }}
         working-directory: ./src/hyperlight_wasm
         env:
           # required for gh cli when downloading
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Test Component Model Examples
-        run: just examples-components ${{ matrix.config }}
+        run: just examples-components ${{ matrix.config }} ${{ matrix.wasmtime == 'lts' && format('{0},wasmtime_lts', matrix.hypervisor) || '' }}
         working-directory: ./src/hyperlight_wasm
 
       ### Benchmarks ###
 
       - name: Download benchmarks from "latest"
         run: |
-          just bench-download ${{ runner.os }} ${{ matrix.hypervisor }} ${{ matrix.cpu }} dev-latest
+          just bench-download ${{ runner.os }} ${{ matrix.hypervisor }} ${{ matrix.cpu }} dev-latest ${{ matrix.wasmtime }}
         env:
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         continue-on-error: true
@@ -137,6 +146,7 @@ jobs:
 
       - name: Run benchmarks
         run: |
-          just bench-ci dev ${{ matrix.config }}
+          just bench-ci dev ${{ matrix.config }} ${{ matrix.wasmtime == 'lts' && format('{0},wasmtime_lts', matrix.hypervisor) || '' }}
         working-directory: ./src/hyperlight_wasm
         if: ${{ matrix.config == 'release' }}
+