CI (Linux): adds loong64 build workflow (#2469)

* CI: add loong64 build workflow

Add reusable workflow for building fastfetch on LoongArch 64-bit
architecture using QEMU user-mode emulation + Docker container
(lcr.loongnix.cn/debian:14). Integrate into CI pipeline and
release dependencies.

* CI (loong64): pin docker/setup-qemu-action to full commit SHA

Pin to 06116385d9baf250c9f4dcb4858b16962ea869c3 (v4.1.0) for
immutable action reference as required by Codacy.

.github/workflows/build-linux-loong64.yml

@@ -0,0 +1,57 @@
+name: Reusable Linux loong64
+
+on:
+  workflow_call:
+
+env:
+  CMAKE_BUILD_TYPE: ${{ vars.CMAKE_BUILD_TYPE || 'RelWithDebInfo' }}
+
+jobs:
+  build:
+    runs-on: ubuntu-24.04
+    steps:
+      - name: checkout repository
+        uses: actions/checkout@v7
+
+      - name: set up QEMU for loong64
+        uses: docker/setup-qemu-action@06116385d9baf250c9f4dcb4858b16962ea869c3 # v4.1.0
+
+      - name: build in loong64 container
+        run: |
+          docker run --rm --platform linux/loong64 \
+            -v ${{ github.workspace }}:/workspace \
+            -w /workspace \
+            lcr.loongnix.cn/debian:14 \
+            bash -c '
+              set -e
+              uname -a
+              cat /etc/os-release || true
+
+              apt-get update
+              apt-get install -y --no-install-recommends \
+                cmake make gcc g++ \
+                libvulkan-dev libwayland-dev libxrandr-dev libxcb-randr0-dev \
+                libdconf-dev libdbus-1-dev libmagickcore-dev \
+                libsqlite3-dev librpm-dev \
+                libegl-dev libglx-dev ocl-icd-opencl-dev \
+                libpulse-dev libdrm-dev \
+                libelf-dev libefl-all-dev \
+                liblua5.4-dev \
+                libvdpau-dev libva-dev \
+                rpm
+
+              cmake -DSET_TWEAK=Off -DBUILD_TESTS=On -DCMAKE_INSTALL_PREFIX=/usr .
+              cmake --build . --target package --verbose -j$(nproc)
+              ./fastfetch --list-features
+              time ./fastfetch -c presets/ci.jsonc --stat false
+              time ./fastfetch -c presets/ci.jsonc --format json
+              time ./flashfetch
+              ldd fastfetch
+              ctest --output-on-failure
+            '
+
+      - name: upload artifacts
+        uses: actions/upload-artifact@v7
+        with:
+          name: fastfetch-linux-loong64
+          path: ./fastfetch-*.*

.github/workflows/ci.yml

@@ -54,6 +54,15 @@ jobs:
     uses: ./.github/workflows/build-linux-armv7l.yml
     secrets: inherit
 
+  linux-loong64:
+    needs: no-features-test
+    name: Linux-loong64
+    permissions:
+      security-events: write
+      contents: read
+    uses: ./.github/workflows/build-linux-loong64.yml
+    secrets: inherit
+
   linux-vms:
     needs: no-features-test
     name: Linux-${{ matrix.arch }}
@@ -188,6 +197,7 @@ jobs:
       - linux-hosts
       - linux-i686
       - linux-armv7l
+      - linux-loong64
       - linux-vms
       - musl-amd64
       - macos-hosts