diff --git a/bin/ansible-with-atl-env b/bin/ansible-with-atl-env
index 43712f5..14a9938 100755
--- a/bin/ansible-with-atl-env
+++ b/bin/ansible-with-atl-env
@@ -14,4 +14,5 @@ source $ENV_FILE
 set +a
 
 # Use Ansible from virtualenv if provided
-pipenv run ansible-playbook -v -i $INV $PLAYBOOK 2>&1 | tee --append $LOG_FILE
+pipenv run \
+       ansible-playbook -v -i $INV $PLAYBOOK 2>&1 | tee --append $LOG_FILE
diff --git a/bin/install-ansible b/bin/install-ansible
index f29e024..15b53d4 100755
--- a/bin/install-ansible
+++ b/bin/install-ansible
@@ -4,12 +4,14 @@ set -e
 
 # The Amazon Linux 2 Ansible package is 2.4, which has issue
 # interacting with RDS, so use pipenv to install a known-good version.
+# Another alternative here would be nix, however that has issues
+# installing as root, and can be slow in practice.
 
-# Luckily AmzLnx2 and Ubuntu use the same package name. This may need
-# some logic if other distros are added. Note: Parsing /etc/os-release
-# is probably a good starting point for that.
+# Luckily AmazonLinux2 and Ubuntu use the same package name for
+# pip. This may need some logic if other distros are added. Note:
+# Parsing /etc/os-release is probably a good starting point for that.
 ./bin/pacapt install python-pip
 
+# See Pipfile and Pipfile.lock.
 pip install pipenv
-
 pipenv sync
diff --git a/bin/run-all-tests b/bin/run-all-tests
index 82b1c02..2cc903f 100755
--- a/bin/run-all-tests
+++ b/bin/run-all-tests
@@ -2,11 +2,12 @@
 
 set -e
 
-# Use Ansible from virtualenv if provided
+# Install dev packages from Pipfile.loc if necessary.
 pipenv sync --dev
 
 for role in `find roles/ -name molecule | sort`; do
     pushd `dirname $role`
-    pipenv run molecule test --all
+    pipenv run \
+           molecule test --all
     popd
 done