Merge pull request #60 from gruntwork-io/fix-precommit

Try to fix precommit install

Author: brikis98

.circleci/config.yml

@@ -44,8 +44,10 @@ jobs:
 
       # Install external dependencies
       - run: DEBIAN_FRONTEND=noninteractive sudo apt-get update && sudo apt-get install -y python-pip
-      # Oct 26, 2019: Install the last known working version of pre-commit
-      - run: pip install pre-commit==1.11.2 awscli
+      # Oct 26, 2019: Install the last known working version of pre-commit. Also, we have to pin the version of a
+      # transient dependency that is being pulled in (cfgv) which released a new version that is no longer compatible
+      # with any python < 3.6.
+      - run: pip install pre-commit==1.11.2 cfgv==2.0.1 awscli
 
       # Fail the build if the pre-commit hooks don't pass. Note: if you run "pre-commit install" locally in the roo repo
       # folder, these hooks will execute automatically every time before you commit, ensuring the build never fails at this step!