diff --git a/.gitea/workflows/build.yml b/.gitea/workflows/build.yml
index ea1f56e..60ebee1 100644
--- a/.gitea/workflows/build.yml
+++ b/.gitea/workflows/build.yml
@@ -1,6 +1,8 @@
 name: Build packages
 
 on:
+  push:
+    branches: [main]
   workflow_dispatch:
     inputs:
       package:
@@ -12,14 +14,25 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
+        with:
+          fetch-depth: 2
+
+      - name: Detect package
+        id: detect
+        run: |
+          if [ -n "${{ github.event.inputs.package }}" ]; then
+            echo "PKG=${{ github.event.inputs.package }}" >> $GITHUB_ENV
+          else
+            PKG=$(git diff --name-only HEAD~1 HEAD | grep -oP '^[^/]+(?=/)' | sort -u | while read dir; do
+              [ -f "$dir/Makefile" ] && echo "$dir"
+            done | head -1)
+            echo "PKG=$PKG" >> $GITHUB_ENV
+          fi
 
       - name: Build and publish
+        if: env.PKG != ''
         env:
           GITEA_TOKEN: ${{ secrets.GITEA_TOKEN }}
         run: |
-          make -C ${{ github.event.inputs.package }} \
-            GITEA_USER=andrew \
-            GITEA_URL=https://git.nakolenke.org \
-            GITEA_ORG=nakolenke-pub \
-            SUITE=trixie \
-            package publish
+          echo "Building: $PKG"
+          make -C $PKG all publish