-- in.cue -- let X = {} [Y="foo"]: 3 a: Y c: {} for x in c {a: E} Z1=[Z2=string]: Z1 + Z2 -- out/compile -- unreferenced alias or let clause X: ./in.cue:1:2 a: reference "Y" not found: ./in.cue:4:12 for[].a: reference "E" not found: ./in.cue:7:16 --- in.cue { let X#1 = {} ["foo"]: 3 a: _|_(reference "Y" not found) c: {} for _, x in 〈0;c〉 { a: _|_(reference "E" not found) } [string]: (〈0;(〈0;-〉)〉 + 〈0;-〉) }