CircleCI configuration for monorepo: https://tech.julienkarst.com/how-to-setup-circleci-inside-a-monorepo

config.yml

version: 2.1

parameters:
  # By default we enable the main workflow
  trigger:
    type: boolean
    default: true

  # Add a boolean parameter on each package.
  core:
    type: boolean
    default: false

  components:
    type: boolean
    default: false