GA: update execution testing for os x to use brew

Author: mmcky

.github/workflows/execution.yml

@@ -4,13 +4,13 @@ on:
     # UTC 22:00 is early morning in Australia
     - cron:  '0 22 * * *'
 jobs:
-  execution-tests-linux-osx:
+  execution-tests-linux:
     name: Execution Tests (${{ matrix.python-version }}, ${{ matrix.os }})
     runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false
       matrix:
-        os: ["ubuntu-latest", "macos-latest"]
+        os: ["ubuntu-latest"]
         python-version: ["3.8"]
     steps:
       - name: Checkout
@@ -46,6 +46,38 @@ jobs:
         with:
           name: execution-reports
           path: _build/html/reports
+execution-tests-osx:
+    name: Execution Tests (${{ matrix.python-version }}, ${{ matrix.os }})
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: ["macos-latest"]
+        python-version: ["3.8"]
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - uses: conda-incubator/setup-miniconda@v2
+        with:
+          auto-update-conda: true
+          python-version: ${{ matrix.python-version }}
+      - name: Install Anaconda + Dependencies
+        shell: bash -l {0}
+        run: |
+          conda install anaconda
+          pip install jupyter-book sphinx-multitoc-numbering quantecon-book-theme sphinxext-rediraffe sphinx_tojupyter
+      - name: Install latex dependencies
+        run: |
+          brew install texlive
+      - name: Build Lectures (+ Execution Checks)
+        shell: bash -l {0}
+        run: jb build lectures --path-output=./ -W --keep-going
+      - name: Upload Execution Reports
+        uses: actions/upload-artifact@v2
+        if: failure()
+        with:
+          name: execution-reports
+          path: _build/html/reports
   # execution-tests-win:
   #   name: Execution Tests (${{ matrix.python-version }}, ${{ matrix.os }})
   #   runs-on: ${{ matrix.os }}