-- in.cue --
root: {
    a: {
        $id: "sequenced"
        seq: 2 // terminate at t2
        val: "foo"
        out: string
    }
    b: {
        $id: "sequenced"
        seq: 3 // terminate at t3
        val: "bar"
        out: string
    }
    c: {
        $id: "sequenced"
        seq: 1 // terminate at t1
        val: "baz"
        out: string
    }
    d: {
        $id: "valToOut"
        out: a.out + b.out + c.out
    }
}
-- out/run/errors --
-- out/run/t0 --
graph TD
  t0("root.a [Ready]")
  t1("root.b [Ready]")
  t2("root.c [Ready]")
  t3("root.d [Waiting]")
  t3-->t0
  t3-->t1
  t3-->t2

-- out/run/t1 --
graph TD
  t0("root.a [Running]")
  t1("root.b [Running]")
  t2("root.c [Terminated]")
  t3("root.d [Waiting]")
  t3-->t0
  t3-->t1
  t3-->t2

-- out/run/t1/value --
{
	$id: "sequenced"
	seq: 1
	val: "baz"
	out: "baz"
}
-- out/run/t2 --
graph TD
  t0("root.a [Terminated]")
  t1("root.b [Running]")
  t2("root.c [Terminated]")
  t3("root.d [Waiting]")
  t3-->t0
  t3-->t1
  t3-->t2

-- out/run/t2/value --
{
	$id: "sequenced"
	seq: 2
	val: "foo"
	out: "foo"
}
-- out/run/t3 --
graph TD
  t0("root.a [Terminated]")
  t1("root.b [Terminated]")
  t2("root.c [Terminated]")
  t3("root.d [Ready]")
  t3-->t0
  t3-->t1
  t3-->t2

-- out/run/t3/value --
{
	$id: "sequenced"
	seq: 3
	val: "bar"
	out: "bar"
}
-- out/run/t4 --
graph TD
  t0("root.a [Terminated]")
  t1("root.b [Terminated]")
  t2("root.c [Terminated]")
  t3("root.d [Terminated]")
  t3-->t0
  t3-->t1
  t3-->t2

-- out/run/t4/value --
{
	$id: "valToOut"
	out: "foobarbaz"
}