language: elixir
matrix:
  include:
    # TODO: temporarily disabled since the newest version of Hackney (used by excoveralls) doesn't seem to work with OTP 20 ("Compiling src/hackney_ssl.erl failed")
    #    - otp_release: 20.0
    #      elixir: 1.8
    - otp_release: 21.0
      elixir: 1.8
    - otp_release: 22.0
      elixir: 1.8
    # TODO: temporarily disabled since the newest version of Hackney (used by excoveralls) doesn't seem to work with OTP 20 ("Compiling src/hackney_ssl.erl failed")
    #    - otp_release: 20.0
    #      elixir: 1.9
    - otp_release: 22.0
      elixir: 1.9
    - otp_release: 21.0
      elixir: 1.10
    - otp_release: 22.0
      elixir: 1.10
    - otp_release: 23.0
      elixir: 1.10
sudo: false
script:
  - MIX_ENV=test mix coveralls.travis