message: travis doesn't support wildcards here
  and without caching we get much slower builds, probably because of nodegit inside packages/git/node_modules most of all.
diff: @@ -32,8 +32,25 @@ env:
  cache:
  yarn: true
  directories:
  - - node_modules
  - - packages/*/node_modules
  + - packages/authentication/node_modules
  + - packages/bundler/node_modules
  + - packages/core-types/node_modules
  + - packages/di/node_modules
  + - packages/drupal/node_modules
  + - packages/elasticsearch/node_modules
  + - packages/eslint-config/node_modules
  + - packages/git/node_modules
  + - packages/github-auth/node_modules
  + - packages/handlebars/node_modules
  + - packages/hub/node_modules
  + - packages/image/node_modules
  + - packages/jsonapi/node_modules
  + - packages/mobiledoc/node_modules
  + - packages/plugin-utils/node_modules
  + - packages/routing/node_modules
  + - packages/search/node_modules
  + - packages/test-support/node_modules
  + - packages/tools/node_modules
  before_install:
  - curl -o- -L https://yarnpkg.com/install.sh | bash
  