error:
       … while calling the 'derivationStrict' builtin
         at «nix-internal»/derivation-internal.nix:37:12:
           36|
           37|   strict = derivationStrict drvAttrs;
             |            ^
           38|

       … while evaluating derivation 'darwin-system-26.11.4cff07d'
         whose name attribute is located at «github:nixos/nixpkgs/be3dab5b1a3c41ed2db86093b9f4e048305630b7?narHash=sha256-GZDvT/tbSVQB2KjI86l7VCM5D/vCrJo2sE3PCaaD0oQ%3D»/pkgs/stdenv/generic/make-derivation.nix:651:11

       … while evaluating attribute 'activationScript' of derivation 'darwin-system-26.11.4cff07d'
         at «github:lnl7/nix-darwin/4cff07de74b50e64bdd68cd4e722ab5b6b35ee48?narHash=sha256-oQFip%2Bv0luP8NIxJzmiW4Wu8bILsbFWom5l0zonl8hQ%3D»/modules/system/default.nix:89:7:
           88|
           89|       activationScript = cfg.activationScripts.script.text;
             |       ^
           90|

       … while evaluating the option `system.activationScripts.script.text':

       … while evaluating definitions from `/nix/store/8ggr67sci43hlp8ba6rhjrdhhj5490am-source/modules/system/activation-scripts.nix':

       … while evaluating the option `system.activationScripts.postActivation.text':

       … while evaluating definitions from `/nix/store/2dx8avbzvz3lrv20r7d5s90iwdlbq5rp-source/nix-darwin':

       … while evaluating the option `home-manager.users.mhelton.home.activation.checkFilesChanged.data':

       … while evaluating definitions from `/nix/store/2dx8avbzvz3lrv20r7d5s90iwdlbq5rp-source/modules/files.nix':

       … while evaluating the option `home-manager.users.mhelton.home.file."Library/Fonts/.home-manager-fonts-version".onChange':

       … while evaluating definitions from `/nix/store/2dx8avbzvz3lrv20r7d5s90iwdlbq5rp-source/modules/targets/darwin/fonts.nix':

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

       error: fetchFromGitHub requires one of either `rev` or `tag` to be provided (not both).