1error:2 … while evaluating a branch condition3 at «string»:25:5:4 24| v:5 25| if !builtins.isAttrs v || isDrv v then6 | ^7 26| v89 … in the left operand of the OR (||) operator10 at «string»:25:28:11 24| v:12 25| if !builtins.isAttrs v || isDrv v then13 | ^14 26| v1516 (stack trace truncated; use '--show-trace' to show the full, detailed trace)1718 error: attribute 'busybox' missing19 at «github:NixOS/nixpkgs/37b97ae3dd714de9a17923d004a2c5b5543dfa6d?narHash=sha256-wdYD41UwNwPhTdMaG0AIe7fE1bAdyHe6bB4HLUqUvck%3D»/pkgs/stdenv/linux/bootstrap-tools/default.nix:6:13:20 5|21 6| builder = bootstrapFiles.busybox;22 | ^23 7|