error:
       … in the condition of the assert statement
         at /pwd/lang/eval-fail-print-limit-list.nix:1:1:
            1| assert (
             | ^
            2|   let x = [ 1 [ 2 3 4 5 6 7 8 9 x 10 11 ] 12 ];

       error: expected a Boolean but found a list: [ 1 [ 2 3 4 5 6 7 8 9 [ 1 «2 items elided» ] «2 items elided» ] «1 item elided» ]
       at /pwd/lang/eval-fail-print-limit-list.nix:1:1:
            1| assert (
             | ^
            2|   let x = [ 1 [ 2 3 4 5 6 7 8 9 x 10 11 ] 12 ];
