remove duplicative listing of cache keys

Author: hawkrives

.circleci/config.yml

@@ -13,14 +13,15 @@ commands:
     description: 'Save the Bundler cache'
     steps:
       - save_cache:
-          key: 'v2-ruby-dependencies-{{ arch }}-{{ checksum "Gemfile.lock" }}'
+          key: &bundler-key
+            'v2-ruby-dependencies-{{ arch }}-{{ checksum "Gemfile.lock" }}'
           paths: [./vendor/bundle]
 
   bundler-restore:
     description: 'Restore the Bundler cache'
     steps:
       - restore_cache:
-          key: 'v2-ruby-dependencies-{{ arch }}-{{ checksum "Gemfile.lock" }}'
+          key: *bundler-key
 
   danger:
     description: 'Run Danger'
@@ -35,14 +36,15 @@ commands:
     description: 'Save the Gradle cache'
     steps:
       - save_cache:
-          key: 'v1-gradle-dependencies-{{ arch }}-{{ checksum "android/build.gradle" }}-{{ checksum "android/app/build.gradle" }}-{{ checksum "node_modules/react-native/package.json" }}'
+          key: &gradle-key
+            'v1-gradle-dependencies-{{ arch }}-{{ checksum "android/build.gradle" }}-{{ checksum "android/app/build.gradle" }}-{{ checksum "node_modules/react-native/package.json" }}'
           paths: [~/.gradle]
 
   gradle-restore:
     description: 'Restore the Gradle cache'
     steps:
       - restore_cache:
-          key: 'v1-gradle-dependencies-{{ arch }}-{{ checksum "android/build.gradle" }}-{{ checksum "android/app/build.gradle" }}-{{ checksum "node_modules/react-native/package.json" }}'
+          key: *gradle-key
 
   set-ruby-version:
     description: 'Set the Ruby Version'
@@ -66,14 +68,15 @@ commands:
     description: 'Save the Yarn cache'
     steps:
       - save_cache:
-          key: 'v3-yarn-dependencies-{{ arch }}-{{ checksum "yarn.lock" }}'
+          key: &yarn-key
+            'v3-yarn-dependencies-{{ arch }}-{{ checksum "yarn.lock" }}'
           paths: [~/.cache/yarn, ~/Library/Caches/Yarn]
 
   yarn-restore:
     description: 'Restore the Yarn cache'
     steps:
       - restore_cache:
-          key: 'v3-yarn-dependencies-{{ arch }}-{{ checksum "yarn.lock" }}'
+          key: *yarn-key
 
 workflows:
   version: 2