ci: install Tauri's Linux libraries before publishing the crate

.github/workflows/release.yml

@@ -4,17 +4,29 @@ on:
   release:
     types: [published]
 
+# Publishing a release again retries it: each job skips a version its registry already has.
+
 jobs:
   publish-crates:
     name: Publish to crates.io
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v7
 
+      # cargo publish builds the crate before uploading it, and Tauri needs these on Linux.
+      - name: Install system dependencies
+        run: sudo apt-get update && sudo apt-get install -y libgtk-3-dev libwebkit2gtk-4.1-dev libglib2.0-dev
+
       - uses: dtolnay/rust-toolchain@stable
 
       - name: Publish
-        run: cargo publish
+        run: |
+          version=$(cargo metadata --no-deps --format-version 1 | jq -r '.packages[0].version')
+          if curl -sf -A "tauri-plugin-aptabase release" "https://crates.io/api/v1/crates/tauri-plugin-aptabase/$version" > /dev/null; then
+            echo "tauri-plugin-aptabase $version is already on crates.io"
+          else
+            cargo publish
+          fi
         env:
           CARGO_REGISTRY_TOKEN: ${{ secrets.CARGO_REGISTRY_TOKEN }}
 
@@ -37,4 +49,11 @@ jobs:
 
       - run: npm install
 
-      - run: npm publish
+      - name: Publish
+        run: |
+          version=$(node -p "require('./package.json').version")
+          if [ "$(npm view "@aptabase/tauri@$version" version 2>/dev/null)" = "$version" ]; then
+            echo "@aptabase/tauri $version is already on npm"
+          else
+            npm publish
+          fi