ci: move systemtap-sdt-dev to env action, trim apt installs

- Move systemtap-sdt-dev install into .github/workflows/env/action.yml
  since it's a build dependency for support/usdt/test (sys/sdt.h)
- Remove per-job Install dependencies steps from lint and test jobs
- Remove debootstrap from lint and test (only distro-qemu needs it)
- Add --no-install-recommends to distro-qemu apt installs

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: gnurizen

.github/workflows/env/action.yml

@@ -14,9 +14,13 @@ runs:
         # Skip translations to speed up apt-get update
         echo 'Acquire::Languages "none";' | sudo tee /etc/apt/apt.conf.d/99no-translations > /dev/null
         # Makefile expects ARCH-linux-gnu-gcc; install if not available
+        sudo apt-get update
+        # systemtap-sdt-dev provides sys/sdt.h needed by support/usdt/test
+        sudo apt-get install -y --no-install-recommends systemtap-sdt-dev
+        # Makefile expects ARCH-linux-gnu-gcc; install if not available
         case "$(uname -m)" in
-          x86_64)  command -v x86_64-linux-gnu-gcc  >/dev/null || { sudo apt-get update && sudo apt-get install -y gcc-x86-64-linux-gnu; } ;;
-          aarch64) command -v aarch64-linux-gnu-gcc >/dev/null || { sudo apt-get update && sudo apt-get install -y gcc-aarch64-linux-gnu; } ;;
+          x86_64)  command -v x86_64-linux-gnu-gcc  >/dev/null || sudo apt-get install -y gcc-x86-64-linux-gnu ;;
+          aarch64) command -v aarch64-linux-gnu-gcc >/dev/null || sudo apt-get install -y gcc-aarch64-linux-gnu ;;
         esac
     - name: Set up Go
       uses: actions/setup-go@4b73464bb391d4059bd26b0524d20df3927bd417 # v6.3.0

.github/workflows/unit-test-on-pull-request.yml

@@ -42,10 +42,6 @@ jobs:
         uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
       - name: Set up environment
         uses: ./.github/workflows/env
-      - name: Install dependencies
-        run: |
-          sudo apt-get update -y
-          sudo apt-get install -y debootstrap systemtap-sdt-dev
       - name: linter
         env:
           CGO_ENABLED: 1
@@ -89,10 +85,6 @@ jobs:
           restore-keys: |
             coredumps-${{ matrix.target_arch }}
             coredumps-
-      - name: Install dependencies
-        run: |
-          sudo apt-get update -y
-          sudo apt-get install -y debootstrap systemtap-sdt-dev
       - name: Tests
         run: make test TARGET_ARCH=${{ matrix.target_arch }} GO_FLAGS="${{ matrix.go_flags }}"
 
@@ -291,10 +283,10 @@ jobs:
           sudo apt-get update -y
           case "${{ matrix.target_arch }}" in
             amd64) sudo apt-get -y --no-install-recommends --no-install-suggests install qemu-system-x86;;
-            arm64) sudo apt-get -y install qemu-system-arm ipxe-qemu gcc-aarch64-linux-gnu libc6-arm64-cross libc6:arm64 binutils-aarch64-linux-gnu musl-dev:arm64 systemtap-sdt-dev:arm64;;
+            arm64) sudo apt-get -y install qemu-system-arm ipxe-qemu gcc-aarch64-linux-gnu libc6-arm64-cross libc6:arm64 binutils-aarch64-linux-gnu musl-dev:arm64;;
             *) echo >&2 "bug: bad arch selected"; exit 1;;
           esac
-          sudo apt-get install -y debootstrap systemtap-sdt-dev
+          sudo apt-get install -y --no-install-recommends debootstrap
       - name: Get parcagpu image digest
         id: parcagpu-digest
         run: |