# Attenuate `$config` by rewriting plain `require-service` assertions to `require-core-service`
# assertions. Allow all other assertions through.
#
let ?sys = <* $config [<or [
  <rewrite <require-service ?s> <require-core-service $s>>
  <accept _>
]>]>

# Give meaning to `require-core-service`: it is an ordinary `require-service`, plus a
# declaration that the `core` milestone depends on the service.
#
? <require-core-service ?s> [
  <depends-on <milestone core> <service-state $s up>>
  <require-service $s>
]

# Load config in the `core` directory, using the wrapped `config` so that all plain services
# required are changed to be *core* services.
#
<require-service <config-watcher "/etc/syndicate/core" {
  config: $sys
  gatekeeper: $gatekeeper
  log: $log
}>>

# In addition, require the `core` milestone explicitly.
#
<require-service <milestone core>>