ci(snap): enable snapcraft build across platforms

.github/workflows/draft.yml

@@ -145,12 +145,11 @@ jobs:
           path: yazi-${{ matrix.target }}.zip
 
   build-snap:
-    if: false # Can't make CI pass, disable for now
     strategy:
       matrix:
-        include:
+        arch:
-          - os: ubuntu-latest
+          - amd64
-            target: x86_64-unknown-linux-gnu
+          - arm64
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v4
@@ -158,8 +157,32 @@ jobs:
       - name: Setup sccache
         uses: mozilla-actions/sccache-action@v0.0.6
 
-      - name: Build
+      - name: Setup LXD
-        uses: snapcore/action-build@v1
+        uses: canonical/setup-lxd@v1
+
+      - name: Setup snapcraft
+        run: |
+          sudo snap install --classic snapcraft
+
+          mkdir -p ~/.local/share/snapcraft
+          echo "${{ secrets.LP_TOKEN }}" > ~/.local/share/snapcraft/launchpad-credentials
+
+          git config --global user.email "41898282+github-actions[bot]@users.noreply.github.com"
+          git config --global user.name "Github Actions"
+
+      - name: Build snap
+        env:
+          arch: ${{ matrix.arch }}
+        run: |
+          # Modify the `platforms` to use a single arch only, but run this in a matrix so they
+          # all get hit
+          yq -i '.platforms |= {env(arch): {"build-on": env(arch)}}' snap/snapcraft.yaml
+
+          # Now run a remote-build, targeting just the single arch specified
+          snapcraft remote-build --launchpad-accept-public-upload
+
+          # Output the build logs from the remote-build
+          cat snapcraft-${name}*${arch}*.txt || echo "Could not find build log"
 
       - name: Rename snap
         run: mv yazi_*.snap yazi-${{ matrix.target }}.snap