error:
       … while evaluating the attribute 'body'
         at /pwd/lang/eval-fail-remove.nix:4:3:
            3|
            4|   body = (removeAttrs attrs ["x"]).x;
             |   ^
            5| }

       error: attribute 'x' missing
       at /pwd/lang/eval-fail-remove.nix:4:10:
            3|
            4|   body = (removeAttrs attrs ["x"]).x;
             |          ^
            5| }
       Did you mean y?