Multiple configurations in a container

Say I had two rom configurations:

http_configuration =, {
  uri: '',
  headers: {
    Accept: 'application/json'
  handlers: :json

sql_configuration = config =, 'postgres://localhost:5432/mydbname', opts)

How could I create a container that would be have access to the relations in both configs?

ROM.container(sql: sql_configuration, http: http_configuration) # this doesn't work, just pseudo-code

@ianks did you try what’s described under Connect to multiple databases section of the docs?