ci: simplify and accelerate workflows

.github/actions/setup-demo-deps/action.yml

@@ -16,7 +16,7 @@ runs:
     - name: Set up Python 3.12 on Windows
       if: runner.os == 'Windows'
       id: windows_python
-      uses: actions/setup-python@v6
+      uses: actions/setup-python@v7
       with:
         # LLVM 19.1.3's MSVC LLDB embeds the 3.12.7 hosted-tool-cache prefix.
         # A newer 3.12 patch is ABI-compatible, but LLDB combines its embedded
@@ -34,7 +34,7 @@ runs:
     - name: Set up target Python 3.12 on Windows
       if: runner.os == 'Windows' && inputs.windows-arch != 'amd64'
       id: windows_target_python
-      uses: actions/setup-python@v6
+      uses: actions/setup-python@v7
       with:
         # The target library ABI is stable across Python 3.12 patch releases.
         # Reuse the runner's native architecture build when available instead
@@ -46,7 +46,7 @@ runs:
     - name: Set up LLDB Python 3.10 on Windows 386
       if: runner.os == 'Windows' && inputs.windows-arch == '386'
       id: windows_lldb_python_386
-      uses: actions/setup-python@v6
+      uses: actions/setup-python@v7
       with:
         # LLVM's official 19.1.7 Win32 LLDB links python310.dll. Keep this
         # debugger runtime separate from the target Python 3.12 demo library.
@@ -57,7 +57,7 @@ runs:
     - name: Set up LLDB Python 3.11 on Windows ARM64
       if: runner.os == 'Windows' && inputs.windows-arch == 'arm64'
       id: windows_lldb_python
-      uses: actions/setup-python@v6
+      uses: actions/setup-python@v7
       with:
         # LLVM's official 19.1.7 Windows-on-Arm LLDB links python311.dll.
         # 3.11.9 is the final ARM64 artifact in actions/python-versions.

.github/actions/setup-deps/action.yml

@@ -37,10 +37,12 @@ runs:
     - name: Cache full-target Windows LLVM
       if: runner.os == 'Windows' && inputs.install-llvm == 'true' && inputs.windows-abi == 'msvc'
       id: windows_llvm_cache
-      uses: actions/cache/restore@v4
+      uses: actions/cache@v6
       with:
         path: ${{ runner.tool_cache }}\llgo-llvm\LLVM-19.1.3-Windows-X64
-        key: llgo-llvm-19.1.3-full-target-windows-x64-1077267ca353a1e236055ed4b57d6a404d09c40b01bd27dc882870395cdc1aae
+        # Configuration later installs the selected compiler-rt builtins into
+        # this tree, so each target architecture must own an immutable cache.
+        key: llgo-llvm-19.1.3-full-target-windows-${{ inputs.windows-arch }}-1077267ca353a1e236055ed4b57d6a404d09c40b01bd27dc882870395cdc1aae
 
     - name: Install full-target Windows LLVM
       if: runner.os == 'Windows' && inputs.install-llvm == 'true' && inputs.windows-abi == 'msvc' && steps.windows_llvm_cache.outputs.cache-hit != 'true'
@@ -98,17 +100,10 @@ runs:
         Move-Item -LiteralPath $extractedRoot.FullName -Destination $installRoot
         Remove-Item -LiteralPath $archive, $tar.FullName
 
-    - name: Save full-target Windows LLVM
-      if: runner.os == 'Windows' && inputs.install-llvm == 'true' && inputs.windows-abi == 'msvc' && steps.windows_llvm_cache.outputs.cache-hit != 'true'
-      uses: actions/cache/save@v4
-      with:
-        path: ${{ runner.tool_cache }}\llgo-llvm\LLVM-19.1.3-Windows-X64
-        key: llgo-llvm-19.1.3-full-target-windows-x64-1077267ca353a1e236055ed4b57d6a404d09c40b01bd27dc882870395cdc1aae
-
     - name: Cache target-native Windows LLVM support
       if: runner.os == 'Windows' && inputs.install-llvm == 'true' && inputs.windows-arch != 'amd64'
       id: windows_target_llvm_cache
-      uses: actions/cache/restore@v4
+      uses: actions/cache@v6
       with:
         path: ${{ runner.tool_cache }}\llgo-compiler-rt\19.1.7\${{ inputs.windows-arch }}
         key: ${{ inputs.windows-arch == 'arm64' && 'llgo-compiler-rt-19.1.7-windows-arm64-08d871c9a20caf0987ede1a4e44d489e28854c9f2fff3da98b486891f4856e05-native-lldb-v1' || 'llgo-compiler-rt-19.1.7-windows-386-3d7044fa307d3183e4ee2a98e12dd0523ced58f1d1c95c5e057694fb75beb51a-native-lldb-v1' }}
@@ -180,17 +175,10 @@ runs:
           }
         }
 
-    - name: Save target-native Windows LLVM support
-      if: runner.os == 'Windows' && inputs.install-llvm == 'true' && inputs.windows-arch != 'amd64' && steps.windows_target_llvm_cache.outputs.cache-hit != 'true'
-      uses: actions/cache/save@v4
-      with:
-        path: ${{ runner.tool_cache }}\llgo-compiler-rt\19.1.7\${{ inputs.windows-arch }}
-        key: ${{ inputs.windows-arch == 'arm64' && 'llgo-compiler-rt-19.1.7-windows-arm64-08d871c9a20caf0987ede1a4e44d489e28854c9f2fff3da98b486891f4856e05-native-lldb-v1' || 'llgo-compiler-rt-19.1.7-windows-386-3d7044fa307d3183e4ee2a98e12dd0523ced58f1d1c95c5e057694fb75beb51a-native-lldb-v1' }}
-
     - name: Cache Windows MSVC dependencies
       if: runner.os == 'Windows' && inputs.install-llvm == 'true' && inputs.windows-abi == 'msvc'
       id: windows_vcpkg_cache
-      uses: actions/cache/restore@v4
+      uses: actions/cache@v6
       with:
         path: ${{ runner.tool_cache }}\llgo-vcpkg\${{ hashFiles('.github/windows/vcpkg/vcpkg.json') }}
         key: llgo-vcpkg-${{ inputs.windows-arch }}-windows-${{ hashFiles('.github/windows/vcpkg/vcpkg.json') }}
@@ -235,13 +223,6 @@ runs:
           throw "Installing vcpkg dependencies failed with exit code $LASTEXITCODE"
         }
 
-    - name: Save Windows MSVC dependencies
-      if: runner.os == 'Windows' && inputs.install-llvm == 'true' && inputs.windows-abi == 'msvc' && steps.windows_vcpkg_cache.outputs.cache-hit != 'true'
-      uses: actions/cache/save@v4
-      with:
-        path: ${{ runner.tool_cache }}\llgo-vcpkg\${{ hashFiles('.github/windows/vcpkg/vcpkg.json') }}
-        key: llgo-vcpkg-${{ inputs.windows-arch }}-windows-${{ hashFiles('.github/windows/vcpkg/vcpkg.json') }}
-
     - name: Configure standalone Windows LLVM, SDK, and dependencies
       if: runner.os == 'Windows' && inputs.install-llvm == 'true' && inputs.windows-abi == 'msvc'
       shell: pwsh
@@ -684,14 +665,36 @@ runs:
         llvm-version: ${{ inputs.llvm-version }}
         windows-arch: ${{ inputs.windows-arch }}
 
+    - name: Refresh Homebrew metadata on Apple Silicon
+      if: runner.os == 'macOS' && runner.arch == 'ARM64'
+      shell: bash
+      env:
+        HOMEBREW_NO_AUTO_UPDATE: 1
+      run: brew update
+
     - name: Install macOS dependencies
       if: runner.os == 'macOS'
       shell: bash
       env:
+        HOMEBREW_NO_AUTO_UPDATE: 1
         HOMEBREW_NO_INSTALLED_DEPENDENTS_CHECK: 1
       run: |
-        brew update
-
+        # Intel macOS is a Homebrew Tier 3 configuration and newly published
+        # formulae may have no Intel bottle. Keep its runner-image metadata and
+        # installed formulae; Apple Silicon refreshes metadata in the step above.
+        brew_install_missing() {
+          local formula
+          local missing=()
+          for formula in "$@"; do
+            if ! brew list --versions "${formula}" >/dev/null; then
+              missing+=("${formula}")
+            fi
+          done
+          if (( ${#missing[@]} > 0 )); then
+            brew install "${missing[@]}"
+          fi
+        }
+
         # Install LLVM if requested
         if [[ "${{ inputs.install-llvm }}" == "true" ]]; then
           llvm_formula="llvm@${{inputs.llvm-version}}"
@@ -709,7 +712,7 @@ runs:
             esac
           done < <(brew list --formula)
 
-          brew install "${llvm_formula}" "${lld_formula}"
+          brew_install_missing "${llvm_formula}" "${lld_formula}"
           brew link --force --overwrite "${llvm_formula}" "${lld_formula}"
           llvm_bin="$(brew --prefix "${llvm_formula}")/bin"
           lld_bin="$(brew --prefix "${lld_formula}")/bin"
@@ -726,7 +729,7 @@ runs:
         fi
 
         # Install common dependencies
-        brew install bdw-gc openssl libffi libuv
+        brew_install_missing bdw-gc openssl libffi libuv
         brew link --overwrite libffi
 
         # Install optional deps for demos.
@@ -736,10 +739,12 @@ runs:
           cjson       # for github.com/goplus/lib/c/cjson
           sqlite      # for github.com/goplus/lib/c/sqlite
         )
-        brew install "${opt_deps[@]}"
+        brew_install_missing "${opt_deps[@]}"
 
-        brew install python@3.12 || true # for github.com/goplus/lib/py
-        brew link --overwrite python@3.12
+        # Python is optional and is used only by github.com/goplus/lib/py.
+        if brew_install_missing python@3.12; then
+          brew link --overwrite python@3.12 || true
+        fi
 
     - name: Install Ubuntu dependencies
       if: runner.os == 'Linux'

.github/actions/setup-embed-deps/action.yml

@@ -4,14 +4,23 @@ description: "Install dependencies required for embedded QEMU tests"
 runs:
   using: "composite"
   steps:
+    - name: Refresh Homebrew metadata on Apple Silicon
+      if: runner.os == 'macOS' && runner.arch == 'ARM64'
+      shell: bash
+      env:
+        HOMEBREW_NO_AUTO_UPDATE: 1
+      run: brew update
+
     - name: Install macOS embedded dependencies
       if: runner.os == 'macOS'
       shell: bash
       env:
+        HOMEBREW_NO_AUTO_UPDATE: 1
         HOMEBREW_NO_INSTALLED_DEPENDENTS_CHECK: 1
       run: |
-        brew update
-        brew install sdl2
+        # Preserve runner-provided packages on Intel, where Homebrew no longer
+        # guarantees bottles. Apple Silicon refreshes metadata in the step above.
+        brew list --versions sdl2 >/dev/null || brew install sdl2
 
     - name: Install Ubuntu embedded dependencies
       if: runner.os == 'Linux'
@@ -20,13 +29,24 @@ runs:
         sudo apt-get update
         sudo apt-get install -y libsdl2-2.0-0 libslirp0
 
+    - name: Cache ESP QEMU toolchains
+      id: esp_qemu_cache
+      uses: actions/cache@v6
+      with:
+        path: .cache/qemu
+        key: esp-qemu-${{ runner.os }}-${{ runner.arch }}-${{ hashFiles('.github/workflows/install-esp-qemu.sh') }}
+
     - name: Install ESP QEMU toolchains
+      if: steps.esp_qemu_cache.outputs.cache-hit != 'true'
       shell: bash
       run: |
         chmod +x .github/workflows/install-esp-qemu.sh
-        QEMU_DIR=".cache/qemu"
-        .github/workflows/install-esp-qemu.sh "$QEMU_DIR"
-        qemu_bin="${PWD}/${QEMU_DIR}/bin"
+        .github/workflows/install-esp-qemu.sh .cache/qemu
+
+    - name: Add ESP QEMU to PATH
+      shell: bash
+      run: |
+        qemu_bin="${PWD}/.cache/qemu/bin"
         if [[ "$RUNNER_OS" == Windows ]]; then
           # Git Bash understands /d/... paths, but LLGo launches QEMU through
           # Windows CreateProcess and therefore needs a native path.

.github/actions/setup-goreleaser/action.yml

@@ -19,29 +19,23 @@ runs:
       uses: ./.github/actions/setup-go
     - name: Restore Linux sysroot cache
       id: cache-linux-sysroot
-      uses: actions/cache/restore@v5
+      uses: actions/cache/restore@v6
       with:
         path: .sysroot/linux.tar.gz
         key: ${{ inputs.linux-cache-key }}
     - name: Populate Linux sysroot
       run: tar -xzvf .sysroot/linux.tar.gz -C .sysroot
       shell: bash
-    - name: Restore ESP Clang cache
+    - name: Cache ESP Clang
       id: cache-esp-clang
-      uses: actions/cache/restore@v5
+      uses: actions/cache@v6
       with:
         path: ${{ inputs.esp-clang-cache-path }}
         key: esp-clang-${{ hashFiles('.github/workflows/download_esp_clang.sh') }}
     - name: Download ESP Clang (if cache miss)
       if: steps.cache-esp-clang.outputs.cache-hit != 'true'
       run: bash .github/workflows/download_esp_clang.sh
       shell: bash
-    - name: Save ESP Clang cache
-      if: steps.cache-esp-clang.outputs.cache-hit != 'true'
-      uses: actions/cache/save@v5
-      with:
-        path: ${{ inputs.esp-clang-cache-path }}
-        key: esp-clang-${{ hashFiles('.github/workflows/download_esp_clang.sh') }}
     - name: Check file
       run: tree .sysroot
       shell: bash

.github/actions/setup-llvm-mingw/action.yml

@@ -40,10 +40,10 @@ runs:
             ;;
         esac
 
-    - name: Restore llvm-mingw
+    - name: Cache llvm-mingw
       if: runner.os == 'Windows'
       id: llvm_mingw_cache
-      uses: actions/cache/restore@v4
+      uses: actions/cache@v6
       with:
         path: ${{ runner.tool_cache }}\llvm-mingw\20250114\ucrt-x86_64
         key: llvm-mingw-20250114-ucrt-x86_64-9395d95c089611e6cd728c9a07219ffc5ac706e0c719833a2f7e64a706a81541
@@ -80,17 +80,10 @@ runs:
         }
         Move-Item -LiteralPath $source.FullName -Destination $installRoot
 
-    - name: Save llvm-mingw
-      if: runner.os == 'Windows' && steps.llvm_mingw_cache.outputs.cache-hit != 'true'
-      uses: actions/cache/save@v4
-      with:
-        path: ${{ runner.tool_cache }}\llvm-mingw\20250114\ucrt-x86_64
-        key: llvm-mingw-20250114-ucrt-x86_64-9395d95c089611e6cd728c9a07219ffc5ac706e0c719833a2f7e64a706a81541
-
-    - name: Restore llvm-mingw target dependencies
+    - name: Cache llvm-mingw target dependencies
       if: runner.os == 'Windows'
       id: llvm_mingw_vcpkg_cache
-      uses: actions/cache/restore@v4
+      uses: actions/cache@v6
       with:
         path: ${{ runner.tool_cache }}\llgo-mingw-vcpkg\${{ hashFiles('.github/windows/vcpkg/vcpkg.json') }}\386
         key: llgo-llvm-mingw-20250114-ucrt-386-${{ hashFiles('.github/windows/vcpkg/vcpkg.json') }}
@@ -132,13 +125,6 @@ runs:
           throw "Installing llvm-mingw 386 dependencies failed with exit code $LASTEXITCODE"
         }
 
-    - name: Save llvm-mingw target dependencies
-      if: runner.os == 'Windows' && steps.llvm_mingw_vcpkg_cache.outputs.cache-hit != 'true'
-      uses: actions/cache/save@v4
-      with:
-        path: ${{ runner.tool_cache }}\llgo-mingw-vcpkg\${{ hashFiles('.github/windows/vcpkg/vcpkg.json') }}\386
-        key: llgo-llvm-mingw-20250114-ucrt-386-${{ hashFiles('.github/windows/vcpkg/vcpkg.json') }}
-
     - name: Configure llvm-mingw target
       if: runner.os == 'Windows'
       shell: pwsh
@@ -232,10 +218,10 @@ runs:
         Add-Content -Encoding utf8 $env:GITHUB_ENV "LLGO_MINGW_TARGET_TRIPLE=i686-w64-windows-gnu"
         Add-Content -Encoding utf8 $env:GITHUB_ENV "LLGO_MINGW_TARGET_VCPKG_ROOT=$vcpkgRoot"
 
-    - name: Restore cross-host llvm-mingw
+    - name: Cache cross-host llvm-mingw
       if: runner.os != 'Windows' && env.LLGO_MINGW_CROSS_ROOT == ''
       id: cross_host_llvm_mingw_cache
-      uses: actions/cache/restore@v4
+      uses: actions/cache@v6
       with:
         path: ${{ runner.tool_cache }}/llvm-mingw/20250114/ucrt-${{ runner.os }}-${{ runner.arch }}
         key: llvm-mingw-20250114-ucrt-${{ runner.os }}-${{ runner.arch }}-${{ runner.os == 'macOS' && '80b2e7ade71ba2dfe9e8d27fe47ae5738b1fb8d34e057faa2beef3070392f2d6' || 'a16f52dee819797248e6c7d63b8b1e50a92119f45767ecd8e9633d1733b896e2' }}
@@ -284,17 +270,10 @@ runs:
         fi
         mv "$source_root" "$install_root"
 
-    - name: Save cross-host llvm-mingw
-      if: runner.os != 'Windows' && env.LLGO_MINGW_CROSS_ROOT == '' && steps.cross_host_llvm_mingw_cache.outputs.cache-hit != 'true'
-      uses: actions/cache/save@v4
-      with:
-        path: ${{ runner.tool_cache }}/llvm-mingw/20250114/ucrt-${{ runner.os }}-${{ runner.arch }}
-        key: llvm-mingw-20250114-ucrt-${{ runner.os }}-${{ runner.arch }}-${{ runner.os == 'macOS' && '80b2e7ade71ba2dfe9e8d27fe47ae5738b1fb8d34e057faa2beef3070392f2d6' || 'a16f52dee819797248e6c7d63b8b1e50a92119f45767ecd8e9633d1733b896e2' }}
-
-    - name: Restore cross-host target dependencies
+    - name: Cache cross-host target dependencies
       if: runner.os != 'Windows'
       id: cross_host_vcpkg_cache
-      uses: actions/cache/restore@v4
+      uses: actions/cache@v6
       with:
         path: ${{ runner.tool_cache }}/llgo-mingw-vcpkg/${{ hashFiles('.github/windows/vcpkg/vcpkg.json') }}/${{ runner.os }}-${{ runner.arch }}/${{ inputs.windows-arch }}
         key: llgo-llvm-mingw-20250114-ucrt-${{ runner.os }}-${{ runner.arch }}-${{ inputs.windows-arch }}-${{ hashFiles('.github/windows/vcpkg/vcpkg.json') }}
@@ -342,13 +321,6 @@ runs:
           "--x-install-root=$install_root" \
           --clean-after-build
 
-    - name: Save cross-host target dependencies
-      if: runner.os != 'Windows' && steps.cross_host_vcpkg_cache.outputs.cache-hit != 'true'
-      uses: actions/cache/save@v4
-      with:
-        path: ${{ runner.tool_cache }}/llgo-mingw-vcpkg/${{ hashFiles('.github/windows/vcpkg/vcpkg.json') }}/${{ runner.os }}-${{ runner.arch }}/${{ inputs.windows-arch }}
-        key: llgo-llvm-mingw-20250114-ucrt-${{ runner.os }}-${{ runner.arch }}-${{ inputs.windows-arch }}-${{ hashFiles('.github/windows/vcpkg/vcpkg.json') }}
-
     - name: Configure cross-host llvm-mingw target
       if: runner.os != 'Windows'
       shell: bash