ci: add workflow to auto-update pkgver in moonarch-pkgbuilds

.gitea/workflows/update-pkgver.yaml

@@ -0,0 +1,56 @@
+# ABOUTME: Updates pkgver in moonarch-pkgbuilds after a push to main.
+# ABOUTME: Ensures paru detects new versions of this package.
+
+name: Update PKGBUILD version
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  update-pkgver:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout source repo
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Get pkgver from git describe
+        id: version
+        run: |
+          PKGVER=$(git describe --long --tags | sed 's/^v//;s/-/.r/;s/-/./')
+          echo "pkgver=$PKGVER" >> "$GITHUB_OUTPUT"
+          echo "New pkgver: $PKGVER"
+
+      - name: Checkout moonarch-pkgbuilds
+        uses: actions/checkout@v4
+        with:
+          repository: nevaforget/moonarch-pkgbuilds
+          token: ${{ secrets.PKGBUILD_TOKEN }}
+          path: pkgbuilds
+
+      - name: Update pkgver in PKGBUILD
+        run: |
+          PKGBUILD="pkgbuilds/moonset-git/PKGBUILD"
+          OLD_VER=$(grep '^pkgver=' "$PKGBUILD" | cut -d= -f2)
+          NEW_VER="${{ steps.version.outputs.pkgver }}"
+
+          if [ "$OLD_VER" = "$NEW_VER" ]; then
+            echo "pkgver already up to date ($NEW_VER)"
+            exit 0
+          fi
+
+          sed -i "s/^pkgver=.*/pkgver=$NEW_VER/" "$PKGBUILD"
+          echo "Updated pkgver: $OLD_VER → $NEW_VER"
+
+      - name: Commit and push
+        run: |
+          cd pkgbuilds
+          git config user.name "pkgver-bot"
+          git config user.email "gitea@moonarch.de"
+          git diff --quiet && exit 0
+          git add moonset-git/PKGBUILD
+          git commit -m "chore(moonset-git): bump pkgver to ${{ steps.version.outputs.pkgver }}"
+          git push