message: travis: addons codestyle
diff: @@ -10,6 +10,14 @@ cache:
  apt: true
  pip: true
  +addons:
  + apt:
  + packages:
  + - build-essential
  + - cython
  + - libantlr4-runtime-dev
  + - antlr4
  +
  matrix:
  include:
  - name: "Python 2.7 gcc-8"
  @@ -48,14 +56,6 @@ matrix:
  - g++-9
  - gcc-9
  -addons:
  - apt:
  - packages:
  - - build-essential
  - - cython
  - - libantlr4-runtime-dev
  - - antlr4
  -
  # command to install dependencies
  install:
  