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

@@ -47,16 +47,16 @@ jobs:
 
     - uses: hyperlight-dev/ci-setup-workflow@v1.8.0
       with:
-        rust-toolchain: "1.89"
+        rust-toolchain: "1.93"
 
-    - uses: dtolnay/rust-toolchain@1.89
+    - uses: dtolnay/rust-toolchain@1.93
       with:
         components: clippy, rustfmt
 
     - name: Download Wasm Modules
       uses: actions/download-artifact@v5
       with:
-        name: guest-modules
+        name: guest-modules-lts
         path: ./x64/${{ matrix.config }}
 
     ### Benchmarks ###

.github/workflows/CargoAudit.yml

@@ -18,7 +18,7 @@ jobs:
       # We are not using the common workflow here because it installs a lot of tools we don't need
       uses: dtolnay/rust-toolchain@master
       with:
-        toolchain: "1.89"
+        toolchain: "1.93"
 
       - uses: extractions/setup-just@v3
         with:

.github/workflows/CreateDevcontainerImage.yml

@@ -16,7 +16,7 @@ env:
   USER: vscode
   GROUP: vscode
   LLVM_VERSION: 17
-  RUST_TOOLCHAIN_DEFAULT: 1.89
+  RUST_TOOLCHAIN_DEFAULT: 1.93
   RUST_TOOLCHAIN_FILE: rust-toolchain.toml
   WASI_SDK_VERSION_FULL: "25.0"
   GCC_VERSION: "12" 

.github/workflows/CreateRelease.yml

@@ -38,7 +38,7 @@ jobs:
     - name: Hyperlight setup
       uses: hyperlight-dev/ci-setup-workflow@v1.8.0
       with:
-          rust-toolchain: "1.89"
+          rust-toolchain: "1.93"
     - name: Set HYPERLIGHTWASM_VERSION
       run: |
         git fetch --tags
@@ -50,7 +50,7 @@ jobs:
     - name: Download Wasm Modules
       uses: actions/download-artifact@v5
       with:
-        name: guest-modules
+        name: guest-modules-lts
         path: ${{ env.PLATFORM }}/${{ env.CONFIG }}
     - name: Build rust wasm modules
       run: just build-rust-wasm-examples ${{ env.CONFIG }}
@@ -105,7 +105,7 @@ jobs:
             echo "✅ $crate@$version already published, skipping."
           else
             echo "🚀 Publishing $crate@$version"
-            cargo +1.92 publish -p "$crate"
+            cargo +1.93 publish -p "$crate"
           fi
         }
 

.github/workflows/dep_build_wasm_examples.yml

@@ -21,19 +21,13 @@ permissions:
   contents: read
 
 jobs:
-    build-wasm-examples:
+    build-docker-image:
       if: ${{ inputs.docs_only == 'false' || github.event_name == 'schedule' || github.event_name == 'workflow_dispatch' }}
       runs-on: ubuntu-latest
       steps:
         - uses: actions/checkout@v5
           with:
             fetch-depth: 0
-        - name: Remove default clang
-          run: sudo rm /usr/bin/clang
-        - name: Hyperlight setup workflow
-          uses: hyperlight-dev/ci-setup-workflow@v1.8.0
-          with:
-            rust-toolchain: "1.89"
         - name: Set up Docker Buildx
           uses: docker/setup-buildx-action@v3
         - name: Login to Registry
@@ -76,14 +70,46 @@ jobs:
             tags: ghcr.io/${{ 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: lts
+              features: ""
+            - name: latest
+              features: "wasmtime_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: "1.93"
+        - 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
-        - 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_cargo_publish.yml

@@ -22,7 +22,7 @@ jobs:
       - name: Hyperlight setup 
         uses: hyperlight-dev/ci-setup-workflow@v1.8.0
         with:
-          rust-toolchain: "1.89"
+          rust-toolchain: "1.93"
 
         # github actions that run against PRs check out a ref to the PR merge branch
         # we need to switch / create a branch for cargo ws to run late

.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}", "JobId=build-{3}-{4}-{5}-{6}"]', 
@@ -50,13 +59,20 @@ jobs:
           github.run_id,
           github.run_number,
           github.run_attempt)) }} 
+    env:
+      # Features to pass to cargo. 
+      # On Windows LTS builds, do not pass any features.
+      # On Windows latest builds, only add wasmtime_latest.
+      # On Linux, always pass the hypervisor feature (kvm/mshv3).
+      # On Linux latest builds, also add wasmtime_latest.
+      FEATURES: ${{ matrix.hypervisor != 'hyperv' && format('{0}{1}', matrix.hypervisor, matrix.wasmtime == 'latest' && ',wasmtime_latest' || '') || (matrix.wasmtime == 'latest' && 'wasmtime_latest' || '') }}
     steps:
       - uses: actions/checkout@v5
 
       - name: Hyperlight setup
         uses: hyperlight-dev/ci-setup-workflow@v1.8.0
         with:
-          rust-toolchain: "1.89"
+          rust-toolchain: "1.93"
 
       - name: Add Nightly Rust
         run: |
@@ -74,7 +90,7 @@ 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
@@ -83,7 +99,7 @@ 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 == 'latest' && 'wasmtime_latest' || '' }}
       
       - name: Fmt
         run: just fmt-check
@@ -92,15 +108,15 @@ jobs:
         run: just clippy ${{ matrix.config }}
 
       - name: Build
-        run:  just build ${{ matrix.config }}
+        run:  just build ${{ matrix.config }} ${{ env.FEATURES }}
         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 == 'latest' && 'wasmtime_latest' || '' }}
         working-directory: ./src/hyperlight_wasm
 
       - name: Test
-        run:  just test ${{ matrix.config }}
+        run:  just test ${{ matrix.config }} ${{ env.FEATURES }}
         working-directory: ./src/hyperlight_wasm
 
       - name: Install github-cli (Windows)
@@ -118,7 +134,7 @@ jobs:
         shell: pwsh
 
       - name: Test Examples
-        run: just examples-ci ${{ matrix.config }}
+        run: just examples-ci ${{ matrix.config }} ${{ env.FEATURES }}
         working-directory: ./src/hyperlight_wasm
         env:
           # required for gh cli when downloading
@@ -128,7 +144,7 @@ jobs:
 
       - 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 +153,6 @@ jobs:
 
       - name: Run benchmarks
         run: |
-          just bench-ci dev ${{ matrix.config }}
+          just bench-ci dev ${{ matrix.config }} ${{ env.FEATURES }}
         working-directory: ./src/hyperlight_wasm
         if: ${{ matrix.config == 'release' }}