language: ruby
cache: bundler
rvm:
  - 2.4
  - 2.5
  - 2.6

addons:
  apt:
    packages:
      - graphviz
      - python3
      - python3-pip
      - python3-setuptools

before_install:
  - sudo pip3 install blockdiag seqdiag actdiag nwdiag
  - gem update --system && gem install bundler