.github/workflows/test_on_macos.yml in duckdb-0.2.8.0 vs .github/workflows/test_on_macos.yml in duckdb-0.2.9.0

@@ -5,22 +5,46 @@
 jobs:
   build:
     runs-on: macos-latest
     strategy:
       matrix:
-        ruby: ['2.5.8', '2.6.8', '2.7.4', '3.0.2', 'head']
+        ruby: ['2.6.8', '2.7.4', '3.0.2', 'head']
+        duckdb: ['0.2.8', '0.2.9']
 
     steps:
     - uses: actions/checkout@v2
 
     - name: Set up Ruby
       uses: ruby/setup-ruby@v1
       with:
         ruby-version: ${{ matrix.ruby }}
 
-    - name: Install latest duckdb by brew
+    - name: duckdb cache
+      id: duckdb-cache
+      uses: actions/cache@v2
+      with:
+        path: /usr/local/Cellar/duckdb@${{ matrix.duckdb }}
+        key: ${{ runner.os }}-duckdb-v${{ matrix.duckdb }}
+
+    - name: Install duckdb v${{ matrix.duckdb }} by brew
+      env:
+        DUCKDB_VERSION: ${{ matrix.duckdb }}
+      if: steps.duckdb-cache.outputs.cache-hit != 'true'
       run: |
-        brew install duckdb
+        brew tap-new duckdb/taps
+        brew extract duckdb duckdb/taps --version $DUCKDB_VERSION
+        brew install duckdb/taps/duckdb@$DUCKDB_VERSION
+
+    - name: setup duckdb v${{ matrix.duckdb }} headers and libraries
+      env:
+        DUCKDB_VERSION: ${{ matrix.duckdb }}
+      run: |
+        if [ ! -L /usr/local/include/duckdb.h ]; then
+          header=`find /usr/local/Cellar/duckdb@$DUCKDB_VERSION -name "duckdb.h"`
+          lib=`find /usr/local/Cellar/duckdb@$DUCKDB_VERSION -name "libduckdb.dylib"`
+          ln -s $header /usr/local/include/duckdb.h
+          ln -s $lib /usr/local/lib/libduckdb.dylib
+        fi
 
     - name: Build and test with Rake with Ruby ${{ matrix.ruby }}
       run: |
         ruby -v
         bundle install --jobs 4 --retry 3