let contracts_lib = import "contracts.ncl" in
let defaults_lib  = import "defaults.ncl" in
let version       = import "version.ncl" in

{
  defaults = defaults_lib,

  make_postgresql | not_exported = fun overrides =>
    defaults_lib.postgresql & overrides,

  DefaultPostgreSQL = defaults_lib.postgresql,
  PostgreSQL | contracts_lib.PostgreSQL = defaults_lib.postgresql,
  Version = version,
}