error:
       … while evaluating a branch condition
         at «string»:25:5:
           24|     v:
           25|     if !builtins.isAttrs v || isDrv v then
             |     ^
           26|       v

       … in the left operand of the OR (||) operator
         at «string»:25:28:
           24|     v:
           25|     if !builtins.isAttrs v || isDrv v then
             |                            ^
           26|       v

       … while evaluating definitions from `/nix/store/8ggr67sci43hlp8ba6rhjrdhhj5490am-source/modules/system':

       … while evaluating the option `system.activationScripts':

       … while evaluating definitions from `/nix/store/qp574vrb55157a757vlmdp7sk6vmqy87-source/darwinModules/casks.nix':

       … while evaluating the option `environment.casks':

       … while evaluating definitions from `/nix/store/qp574vrb55157a757vlmdp7sk6vmqy87-source/darwinModules/nix-casks.nix':

       … while evaluating definitions from `/nix/store/6xr58mfvs42ixw6428x3vm9l5h88l2z7-source/modules/transposition.nix':

       … while evaluating the option `perSystem.aarch64-darwin.packages':

       … while evaluating definitions from `/nix/store/p8w9yd7mpxrx35qwiryh5m45cz3rj32g-source/nix/casks, via option perSystem':

       (stack trace truncated; use '--show-trace' to show the full, detailed trace)

       error: build of resolved derivation '/nix/store/8bc1ch74wkjmnq7v031c5yr7n8sryvvl-packages.json.drv' failed