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/6nwzgfvznah5rg192x0hnl5ykchdgi59-source/nixos/modules/system/activation/top-level.nix':

       … while evaluating the option `assertions':

       … while evaluating definitions from `/nix/store/6nwzgfvznah5rg192x0hnl5ykchdgi59-source/nixos/modules/system/boot/loader/grub/grub.nix':

       … while evaluating the option `boot.loader.grub.mirroredBoots':

       … while evaluating definitions from `/nix/store/6nwzgfvznah5rg192x0hnl5ykchdgi59-source/nixos/modules/system/boot/loader/grub/grub.nix':

       … while evaluating the option `boot.loader.grub.devices':

       … while evaluating definitions from `/nix/store/fwi4l5gq3sd4121ri1c1dyqqn8qav4v0-source/module.nix':

       … while evaluating the option `disko.devices.disk.system.content.device':

       … while evaluating the module argument `device' in "/nix/store/fwi4l5gq3sd4121ri1c1dyqqn8qav4v0-source/lib/types/gpt.nix":

       … noting that argument `device` is not externally provided, so querying `_module.args` instead, requiring `config`

       … while evaluating definitions from `':

       … while evaluating the option `disko.devices.disk.system.device':

       … while evaluating definitions from `/nix/store/9p7k9yvy2yhdfa8z8s20pgmxfzdll37m-source/hosts/rofl-15/disk-config.nix':

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

       error: file '«git+file:///var/lib/nixbot/worktrees/1-7ff11abbcfc4-6?ref=HEAD&rev=7ff11abbcfc4ae1f9618f8734bb3cb1a3a96ff63»/hosts/rofl-15/tf-vars.json' does not exist