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/sxb2ijsbdhi8s1lvc6ph692nm84vms3y-source/nixos/modules/system/activation/top-level.nix':

       … while evaluating the option `system.systemBuilderArgs':

       … while evaluating definitions from `/nix/store/sxb2ijsbdhi8s1lvc6ph692nm84vms3y-source/nixos/modules/system/activation/top-level.nix':

       … while evaluating the option `environment.sessionVariables':

       … while evaluating definitions from `/nix/store/sxb2ijsbdhi8s1lvc6ph692nm84vms3y-source/nixos/modules/services/desktop-managers/gnome.nix':

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

       error: Failed to fetch git repository 'https://github.com/wez/finl_unicode.git'