refactored mac pipeline

Author: ericmjl

.azure-pipelines/templates/conda-mac.yml

@@ -0,0 +1,10 @@
+steps:
+  # https://docs.microsoft.com/en-us/azure/devops/pipelines/languages/anaconda?view=azure-devops&tabs=macos
+  # Add conda to bash
+  - bash: echo "##vso[task.prependpath]$CONDA/bin"
+    displayName: Add conda to PATH
+
+  # On Hosted macOS, the agent user doesn't have ownership of Miniconda's installation directory/
+  # We need to take ownership if we want to update conda or install packages globally
+  - bash: sudo chown -R $USER $CONDA
+    displayName: Take ownership of conda installation

.azure-pipelines/templates/setup-script.yml

@@ -2,6 +2,6 @@ steps:
 - script: |
     conda env create -f environment.yml
     source activate bayesian-modelling-tutorial
-    conda install -y python=$(python.version)
+    conda install -y python=${{ python.version }}
     python -m ipykernel install --user --name bayesian-modelling-tutorial
   displayName: 'Create environment, install correct Python, and activate kernel.'