nix-super/tests/functional/lang/parse-fail-mixed-nested-attrs2.err.exp

error: attribute 'y' already defined at «stdin»:3:9
       at «stdin»:2:3:
            1| {
            2|   x.y.y = 3;
             |   ^
            3|   x = { y.y= 3; z = 3; };