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/s7cw0cq2w6qdqixcif23fsacbka4cv0j-source/nixos/modules/system/activation/top-level.nix':

       … while evaluating the option `warnings':

       … while evaluating definitions from `/nix/store/s7cw0cq2w6qdqixcif23fsacbka4cv0j-source/nixos/modules/system/boot/systemd.nix':

       … while evaluating the option `systemd.services.greetd.serviceConfig':

       … while evaluating definitions from `/nix/store/s7cw0cq2w6qdqixcif23fsacbka4cv0j-source/nixos/modules/services/display-managers/greetd.nix':

       … while evaluating definitions from `/nix/store/62jmcf7ra3yq13rb713yxhvw9cmywn4b-source/lib/mkmachine.nix':

       … while evaluating the option `programs.reka.launchCommand':

       … while evaluating definitions from `/nix/store/62jmcf7ra3yq13rb713yxhvw9cmywn4b-source/lib/mkmachine.nix':

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

       error: Failed to open archive (Source threw exception: error: unable to download 'https://elpa.gnu.org/packages/peg-1.0.2.tar': Could not connect to server (7) Failed to connect to elpa.gnu.org:443 after 6040 ms: Could not connect to server)