-- in.cue --
merge: and([1, 1])

// ensure definitions along embedded scalars are preserved.
embed: and([{2, #x: 1}, {2, #x: 2}])
-- out/eval --
Errors:
embed.#x: conflicting values 2 and 1:
    ./in.cue:4:21
    ./in.cue:4:33

Result:
(_|_){
  // [eval]
  merge: (int){ 1 }
  embed: (_|_){
    // [eval]
    #x: (_|_){
      // [eval] embed.#x: conflicting values 2 and 1:
      //     ./in.cue:4:21
      //     ./in.cue:4:33
    }
  }
}
-- out/compile --
--- in.cue
{
  merge: and([
    1,
    1,
  ])
  embed: and([
    {
      2
      #x: 1
    },
    {
      2
      #x: 2
    },
  ])
}