address review feedback

Author: flotwig

circle.yml

@@ -152,25 +152,27 @@ commands:
           command: node scripts/circle-cache.js --action unpack
 
   restore_cached_system_tests_deps:
+    description: 'Restore the cached node_modules for projects in "system-tests/projects/**"'
     steps:
       - run:
           name: Generate Circle Cache key for system tests
           command: yarn workspace @tooling/system-tests cache:key > system_tests_cache_key
       - restore_cache:
           name: Restore system tests node_modules cache
           keys:
-            - v{{ .Environment.CACHE_VERSION }}-{{ arch }}-system-tests-node-modules-cache-{{ checksum "system_tests_cache_key" }}
-            - v{{ .Environment.CACHE_VERSION }}-{{ arch }}-system-tests-node-modules-cache-
+            - v{{ .Environment.CACHE_VERSION }}-{{ arch }}-system-tests-projects-node-modules-cache-{{ checksum "system_tests_cache_key" }}
+            - v{{ .Environment.CACHE_VERSION }}-{{ arch }}-system-tests-projects-node-modules-cache-
 
   update_cached_system_tests_deps:
+    description: 'Update the cached node_modules for projects in "system-tests/projects/**"'
     steps:
       - run:
           name: Generate Circle Cache key for system tests
           command: yarn workspace @tooling/system-tests cache:key > system_tests_cache_key
       - restore_cache:
           name: Restore cache state, to check for known modules cache existence
           keys:
-            - v{{ .Environment.CACHE_VERSION }}-{{ arch }}-system-tests-node-modules-cache-state-{{ checksum "system_tests_cache_key" }}
+            - v{{ .Environment.CACHE_VERSION }}-{{ arch }}-system-tests-projects-node-modules-cache-state-{{ checksum "system_tests_cache_key" }}
       - run:
           name: Bail if specific cache exists
           command: |
@@ -184,13 +186,13 @@ commands:
           command: yarn workspace @tooling/system-tests projects:yarn:install
       - save_cache:
           name: Save system tests node_modules cache
-          key: v{{ .Environment.CACHE_VERSION }}-{{ arch }}-system-tests-node-modules-cache-{{ checksum "system_tests_cache_key" }}
+          key: v{{ .Environment.CACHE_VERSION }}-{{ arch }}-system-tests-projects-node-modules-cache-{{ checksum "system_tests_cache_key" }}
           paths:
             - ~/.cache/cy-system-tests-node-modules
       - run: touch system_tests_node_modules_installed
       - save_cache:
           name: Save system tests node_modules cache state key
-          key: v{{ .Environment.CACHE_VERSION }}-{{ arch }}-system-tests-node-modules-cache-state-{{ checksum "system_tests_cache_key" }}
+          key: v{{ .Environment.CACHE_VERSION }}-{{ arch }}-system-tests-projects-node-modules-cache-state-{{ checksum "system_tests_cache_key" }}
           paths:
             - system_tests_node_modules_installed
 
@@ -2075,20 +2077,16 @@ linux-workflow: &linux-workflow
           - build
     - system-tests-chrome:
         requires:
-          - build
           - system-tests-node-modules-install
     - system-tests-electron:
         requires:
-          - build
           - system-tests-node-modules-install
     - system-tests-firefox:
         requires:
-          - build
           - system-tests-node-modules-install
     - system-tests-non-root:
         executor: non-root-docker-user
         requires:
-          - build
           - system-tests-node-modules-install
     - driver-integration-tests-chrome:
         requires: