fix macOS ci

.github/workflows/ci.yml

@@ -25,10 +25,14 @@ jobs:
         uses: actions/setup-python@v4
         with:
           python-version: ${{ matrix.python-version }}
-      - name: Install zbar lib for QReader
-        if: runner.os != 'Windows'
+      - name: Install zbar lib for QReader (Linux)
+        if: runner.os == 'Linux'
         run: |
           sudo apt-get install -y libzbar0
+      - name: Install zbar lib for QReader (macOS)
+        if: runner.os == 'macOS'
+        run: |
+          brew install zbar
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip

README.md

@@ -50,6 +50,22 @@ options:
 
     pip install -r requirements.txt
 
+### Linux and macOS
+
+For reading QR codes the zbar lib must be installed
+
+#### Windows
+
+The zbar DLLs are included with the Windows Python wheels. On other operating systems, you will need to install the zbar shared library.
+
+#### Mac OS X
+
+    brew install zbar
+
+#### Linux
+
+    sudo apt-get install libzbar0
+
 Known to work with
 
 * Python 3.10.8, protobuf 4.21.9, qrcode 7.3.1, and pillow 9.2