Add file to contain functions used by setup

script/include/setup_functions.inc.sh

@@ -0,0 +1,49 @@
+#!/bin/bash
+
+# setup_functions.inc.sh: Functions used by the setup script
+
+install_pipenv() {
+  exit_code=0
+
+  # Ensure we are not in a virtual env already
+  if [ -z "${VIRTUAL_ENV+xxxx}" ]; then
+    if ! check_pip_for pipenv; then
+      # pipenv is not installed, so install it
+      echo "Installing pipenv..."
+      pip install pipenv
+      # Capture pip exit code
+      exit_code="${?}"
+    fi
+  fi
+
+  return "${exit_code}"
+}
+
+create_virtual_environment() {
+  default_python_version=3.6
+  # Parse out the required Python version from the Pipfile
+  python_version=$(grep python_version ./Pipfile | cut -d '"' -f 2)
+
+  # If we ended up with an empty string for the required Python version,
+  # specify the default version
+  if [ -z "${python_version}" ]; then
+    python_version="${default_python_version}"
+  fi
+
+  # Create a new virtual environment for the app
+  # The environment will be in a directory called .venv off the app
+  # root directory
+  echo "Creating virtual environment using Python version ${python_version}..."
+  return $(PIPENV_VENV_IN_PROJECT=true pipenv --python "${python_version}")
+}
+
+install_sass() {
+  if ! type sass >/dev/null; then
+    if type gem >/dev/null; then
+      echo 'Installing a sass compiler (gem)...'
+      gem install sass
+    else
+      echo 'Could not install a sass compiler. Please install a version of sass.'
+    fi
+  fi
+}