honkoma/priv/repo/migrations/20170502083023_add_local_field_to_activities.exs

defmodule Pleroma.Repo.Migrations.AddLocalFieldToActivities do
  use Ecto.Migration

  def change do
    alter table(:activities) do
      add(:local, :boolean, default: true)
    end

    create_if_not_exists(index(:activities, [:local]))
  end
end