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 definitions from `/nix/store/0s8rx2xs97qamg6c4mz1cfy2ffflpp19-source/modules/checks/nixbot-best-effort-darwin.nix':

       … while evaluating definitions from `/nix/store/0s8rx2xs97qamg6c4mz1cfy2ffflpp19-source/modules/checks/machines.nix, via option perSystem':

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

       … while evaluating definitions from `/nix/store/3a3iv3qwr8g2b66ph7j8rzj6id642alj-source/modules/system/activation-scripts.nix':

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

       … while evaluating definitions from `/nix/store/kj8cxzbm2hzk89z3v5pab04maq5l1g71-source/nix-darwin':

       … while evaluating the option `home-manager.users.crs58.home.activation.checkFilesChanged.data':

       … while evaluating definitions from `/nix/store/kj8cxzbm2hzk89z3v5pab04maq5l1g71-source/modules/files.nix':

       … while evaluating the option `home-manager.users.crs58.home.file."Library/Fonts/.home-manager-fonts-version".onChange':

       … while evaluating definitions from `/nix/store/kj8cxzbm2hzk89z3v5pab04maq5l1g71-source/modules/targets/darwin/fonts.nix':

       … while evaluating the option `home-manager.users.crs58.home.packages':

       … while evaluating definitions from `/nix/store/0s8rx2xs97qamg6c4mz1cfy2ffflpp19-source/modules/home/publishing/tools.nix, via option flake.modules.homeManager.publishing':

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

       error: 'svg2pdf' has been removed as it was unmaintained upstream. Consider using python3Packages.svglib instead.