ci: disable Poetry's new installer for Poetry 1.1.x

.github/workflows/ci-build.yml

@@ -103,6 +103,14 @@ jobs:
       - name: Install older setuptools
         run: poetry run pip install 'setuptools<58.0.0'
 
+      # This command is a workaround for getting Poetry working with Python 3.10. An
+      # fix is made in Poetry 1.2.0a2 but there is currently no official release for
+      # Poetry 1.2 and am apprehensive to moving to a pre-release. Disabling the
+      # experimental installer is a workaround for Poetry 1.1.x
+      # See https://github.com/python-poetry/poetry/issues/4210 for more details
+      - name: Disable Poetry's experimental new installer
+        run: poetry config experimental.new-installer false
+
       - name: Install dependencies
         run: poetry install