Switch back to upstream LLVM on Make

We need something that tests this, anyway

Author: alexreinking

.github/workflows/testing-make.yml

@@ -56,17 +56,28 @@ jobs:
       - name: Install dependencies
         run: |
           if [ "$RUNNER_OS" = "Linux" ]; then
-            sudo apt-get install -y pkg-config libpng-dev libjpeg-turbo8-dev
+            wget -qO- https://apt.llvm.org/llvm-snapshot.gpg.key | sudo tee /etc/apt/trusted.gpg.d/apt.llvm.org.asc
+            echo "deb http://apt.llvm.org/$(lsb_release -cs)/ llvm-toolchain-$(lsb_release -cs)-${LLVM_VERSION} main" | \
+              sudo tee "/etc/apt/sources.list.d/llvm-${LLVM_VERSION}.list"
+            sudo apt-get update
+            sudo apt-get install -y \
+              build-essential \
+              pkg-config \
+              libpng-dev \
+              libjpeg-turbo8-dev \
+              "llvm-${LLVM_VERSION}-dev" \
+              "clang-${LLVM_VERSION}" \
+              "lld-${LLVM_VERSION}" \
+              "liblld-${LLVM_VERSION}-dev"
+            echo "LLVM_CONFIG=llvm-config-${LLVM_VERSION}" | tee -a "$GITHUB_ENV"
           elif [ "$RUNNER_OS" = "macOS" ]; then
-            brew install libjpeg-turbo libpng pkgconf protobuf
+            brew install libjpeg-turbo libpng pkgconf protobuf "llvm@${LLVM_VERSION}" "lld@${LLVM_VERSION}"
+            echo "LLVM_CONFIG=$(brew --prefix "llvm@${LLVM_VERSION}")/bin/llvm-config" | tee -a "$GITHUB_ENV"
           fi
-          uv sync --group ci-llvm-22 --no-install-project
+          
+          uv sync --group ci-base --no-install-project
           echo "${GITHUB_WORKSPACE}/.venv/bin" | tee -a "$GITHUB_PATH"
           echo "VIRTUAL_ENV=${GITHUB_WORKSPACE}/.venv" | tee -a "$GITHUB_ENV"
-
-      - name: Configure Make
-        run: |
-          echo "LLVM_CONFIG=$(halide-llvm --bindir)/llvm-config" | tee -a "$GITHUB_ENV"
           echo "MAKEFLAGS=-j $(getconf _NPROCESSORS_ONLN)" | tee -a "$GITHUB_ENV"
 
       - run: make build_tests