-- in.cue --
given: {
	INC: USD: 2.0
	USD: GBP: 3.0
}
hydrated: {
	for k,v in given {
		for k1,r in v {
			"\(k)": "\(k)":  1.0
			"\(k1)": "\(k1)": 1.0
			"\(k)": "\(k1)": r
			"\(k1)": "\(k)": number
		}
	}
}

foo: {
    a: 10
    if a < 20 {
        if a < 50 {
            b: 20
        }
    }
}
-- out/eval --
(struct){
  given: (struct){
    INC: (struct){
      USD: (float){ 2.0 }
    }
    USD: (struct){
      GBP: (float){ 3.0 }
    }
  }
  hydrated: (struct){
    INC: (struct){
      INC: (float){ 1.0 }
      USD: (float){ 2.0 }
    }
    USD: (struct){
      USD: (float){ 1.0 }
      INC: (number){ number }
      GBP: (float){ 3.0 }
    }
    GBP: (struct){
      GBP: (float){ 1.0 }
      USD: (number){ number }
    }
  }
  foo: (struct){
    a: (int){ 10 }
    b: (int){ 20 }
  }
}
-- out/compile --
--- in.cue
{
  given: {
    INC: {
      USD: 2.0
    }
    USD: {
      GBP: 3.0
    }
  }
  hydrated: {
    for k, v in 〈1;given〉 {
      for k1, r in 〈1;v〉 {
        "\(〈3;k〉)": {
          "\(〈4;k〉)": 1.0
        }
        "\(〈1;k1〉)": {
          "\(〈2;k1〉)": 1.0
        }
        "\(〈3;k〉)": {
          "\(〈2;k1〉)": 〈2;r〉
        }
        "\(〈1;k1〉)": {
          "\(〈4;k〉)": number
        }
      }
    }
  }
  foo: {
    a: 10
    if (〈0;a〉 < 20) {
      if (〈1;a〉 < 50) {
        b: 20
      }
    }
  }
}