diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 831440d..55c9e9d 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -1,66 +1,19 @@
-name: website
+name: CI
 
-#on: [push]  # debugging only
-on:
-  push:
-    tags:
-      - '[0-9]+.[0-9]+.[0-9]+'
+on: [push, pull_request]
 
 jobs:
-  publish:
-    runs-on: ubuntu-latest
+  test:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macOS-latest, windows-latest]
     steps:
-      - name: Checkout
-        uses: actions/checkout@v2
-      - name: Set output
-        id: vars
-        run: echo ::set-output name=tag::${GITHUB_REF:10}
-      - name: Cache choosenim
-        id: cache-choosenim
-        uses: actions/cache@v1
-        with:
-          path: ~/.choosenim
-          key: ${{ runner.os }}-choosenim-stable
-      - name: Cache nimble
-        id: cache-nimble
-        uses: actions/cache@v1
-        with:
-          path: ~/.nimble
-          key: ${{ runner.os }}-nimble-stable
-      - uses: jiro4989/setup-nim-action@v1
-        with:
-          nim-version: 'stable'
-      - name: Install libsnappy
-        run: sudo apt-get install libsnappy1v5
-      - name: Install leveldb c library
-        run: |
-          wget http://ftp.us.debian.org/debian/pool/main/l/leveldb/libleveldb1d_1.22-3_amd64.deb
-          wget http://ftp.us.debian.org/debian/pool/main/l/leveldb/libleveldb-dev_1.22-3_amd64.deb
-          sudo dpkg -i *.deb
-      - name: Build and test
-        env:
-          RELEASE_VERSION: ${{ steps.vars.outputs.tag }}
-        run: |
-          nimble build -Y
-          nimble test -Y
-      - name: Build doc
-        env:
-          RELEASE_VERSION: ${{ steps.vars.outputs.tag }}
-        run: |
-          # Due to bug https://github.com/nim-lang/Nim/issues/14281, compile the documentation separately.
-          nimble doc --project --git.url:https://github.com/$GITHUB_REPOSITORY --git.commit:$RELEASE_VERSION src/leveldb.nim
-          find .
-          # Deploying documentation of the latest version.
-          mkdir -p ./public
-          mv src/htmldocs/* public/
-          cd ./public/
-          ln -s ./leveldb.html index.html
-          cd ../
-      - name: Deploy
-        if: success()
-        uses: crazy-max/ghaction-github-pages@v1.3.0
-        with:
-          target_branch: gh-pages
-          build_dir: ./public
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+    - uses: actions/checkout@v2
+      with:
+        submodules: true
+    - uses: iffy/install-nim@v3
+    - name: Build
+      run: nimble install -y
+    - name: Test
+      run: nimble test -y
diff --git a/build.sh b/build.sh
index 60fb27c..1e02541 100644
--- a/build.sh
+++ b/build.sh
@@ -6,11 +6,27 @@ if ! [ -x "$(command -v toast)" ]; then
   nimble install -y nimterop@0.6.13
 fi
 
+cmake -S "${root}/sources" -B "${root}/build"
+
+# prelude: not needed?
+
+echo >> "${root}/leveldb.nim"
+
+# assemble files to be compiled:
+extensions="c cc cpp"
+for ext in ${extensions}; do
+  echo ${ext}
+  for file in `find "${root}/sources" -type f -name "*.${ext}"`; do
+    echo ${file}
+  done
+done
+
 # generate nim wrapper with nimterop
-toast \
-  --compile="${root}/sources/randombytes.c" \
-  --compile="${root}/sources/hazmat.c" \
-  --pnim \
-  --noHeader \
-  "${root}/sources/randombytes.h" \
-  "${root}/sources/hazmat.h" > "${root}/sss/cwrapper.nim"
+#toast \
+#  --compile="${root}/sources/randombytes.c" \
+#  --compile="${root}/sources/hazmat.c" \
+#  --pnim \
+#  --noHeader \
+#  "${root}/sources/randombytes.h" \
+#  "${root}/sources/hazmat.h" > "${root}/sss/cwrapper.nim"
+~                                                                                ~                                                                                ~                                        
\ No newline at end of file