-- in.cue --
package main

#d1: {
	as: [...string]

	#c: [
		#f1 & {
			"as": ["go"] + as
		},
	]
}

#d2: {
	p: *"." | string

	#c: [
		#f2 & {
			from: #d1 & {
				as: [p]
			}
		},
	]
}

#c1: {
	#c: [...#o]
	_
	...
}

#o: #f1 | #f2

#f1: {
	do: "f1"
	as: [...string]
}

#f2: {
	do:   "f2"
	from: #c1
}
-- out/eval --
(struct){
  #d1: (#struct){
    as: (list){
    }
    #c: (#list){
      0: (#struct){
        do: (string){ "f1" }
        as: (#list){
          0: (string){ "go" }
        }
      }
    }
  }
  #d2: (#struct){
    p: (string){ |(*(string){ "." }, (string){ string }) }
    #c: (#list){
      0: (#struct){
        do: (string){ "f2" }
        from: (#struct){
          #c: (#list){
            0: (#struct){
              do: (string){ "f1" }
              as: (#list){
                0: (string){ "go" }
                1: (string){ |(*(string){ "." }, (string){ string }) }
              }
            }
          }
          as: (#list){
            0: (string){ |(*(string){ "." }, (string){ string }) }
          }
        }
      }
    }
  }
  #c1: (_){
    _
    #c: (list){
    }
  }
  #o: (#struct){ |((#struct){
      do: (string){ "f1" }
      as: (list){
      }
    }, (#struct){
      do: (string){ "f2" }
      from: (_){
        _
        #c: (list){
        }
      }
    }) }
  #f1: (#struct){
    do: (string){ "f1" }
    as: (list){
    }
  }
  #f2: (#struct){
    do: (string){ "f2" }
    from: (_){
      _
      #c: (list){
      }
    }
  }
}
-- out/compile --
--- in.cue
{
  #d1: {
    as: [
      ...string,
    ]
    #c: [
      (〈1;#f1〉 & {
        as: ([
          "go",
        ] + 〈1;as〉)
      }),
    ]
  }
  #d2: {
    p: (*"."|string)
    #c: [
      (〈1;#f2〉 & {
        from: (〈2;#d1〉 & {
          as: [
            〈2;p〉,
          ]
        })
      }),
    ]
  }
  #c1: {
    #c: [
      ...〈1;#o〉,
    ]
    _
    ...
  }
  #o: (〈0;#f1〉|〈0;#f2〉)
  #f1: {
    do: "f1"
    as: [
      ...string,
    ]
  }
  #f2: {
    do: "f2"
    from: 〈1;#c1〉
  }
}