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 the option `system.build.toplevel':

       … while evaluating definitions from `/nix/store/x85g4cmcjva68vjxn3wr5j3mabvx0jk4-source/nixos/modules/system/activation/top-level.nix':

       … while evaluating the option `warnings':

       … while evaluating definitions from `/nix/store/x85g4cmcjva68vjxn3wr5j3mabvx0jk4-source/nixos/modules/system/boot/systemd.nix':

       … while evaluating the option `systemd.services.stricknani-rust-staging.serviceConfig':

       … while evaluating definitions from `/nix/store/qmn4qxlhfr6igfpya5j40zvxgjl5y741-source/services/stricknani-staging.nix':

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

       error: attribute 'stricknani-rust' missing
       at «github:pschmitt/nixos-config-private/969ee12b37572aa63d849509a05fcf7a2145d160?narHash=sha256-FsGpSEC%2BywGtWIgtn3HE47VQjSGoxtJSokitytynwEg%3D»/services/stricknani-staging.nix:8:13:
            7| let
            8|   package = inputs.stricknani-rust.packages.${pkgs.stdenv.hostPlatform.system}.stricknani-rust;
             |             ^
            9|   user = "stricknani-rust-staging";