feat(ci): Build per architecture

Signed-off-by: txtsd <code@ihavea.quest>

.github/workflows/build.yml

@@ -13,14 +13,46 @@ defaults:
     shell: bash
 
 jobs:
+  determine_architectures:
+  runs-on: ubuntu-latest
+  outputs:
+    architectures: ${{ steps.extract-architectures.outputs.architectures }}
+
+  steps:
+    - name: Check out code
+      uses: actions/checkout@v4
+    - name: Update system and install dependencies
+      run: |
+        sed -i 's/#\[multilib\]/\[multilib\]/' /etc/pacman.conf
+        pacman-key --init
+        pacman -Syu --noconfirm
+        pacman -S --noconfirm --needed fd
+
+    - name: Extract architectures
+      id: extract-architectures
+      run: |
+        for file in $(fd --type f -- PKGBUILD)
+        do
+          source $file
+          echo ${arch[@]}
+          if [ $arch != 'any' ]
+          then
+            echo "archictectures=${arch[@]}" >> $GITHUB_OUTPUT
+          else
+            echo "architectures=('x86_64')" >> $GITHUB_OUTPUT
+          fi
+        done
+
   build:
     name: Build
     runs-on: ubuntu-latest
     container: archlinux:base-devel
+    needs: determine_architectures
     if: ${{ inputs.packages != '[]' && inputs.packages != '[""]' && inputs.packages != '' }}
     strategy:
       matrix:
         package: ${{ fromJson(inputs.packages) }}
+        arch: ${{ fromJson(needs.determine_architectures.outputs.architectures) }}
       fail-fast: false
 
     steps: