bug: services.kanshi: attribute '"kanshi/config"' missing

### Are you following the right branch? - [x] My Nixpkgs and Home Manager versions are in sync ### Is there an existing issue for this? - [x] I have searched the existing issues ### Issue description I'm trying to build my configuration and found the following situation: ``` error: … while calling the 'head' builtin at /nix/store/fafnljsz5sckb1vzpns5dc2l6z4xkakm-source/lib/attrsets.nix:1719:13: 1718| if length values == 1 || pred here (elemAt values 1) (head values) then 1719| head values | ^ 1720| else … while evaluating the attribute 'value' at /nix/store/fafnljsz5sckb1vzpns5dc2l6z4xkakm-source/lib/modules.nix:1149:7: 1148| // { 1149| value = addErrorContext "while evaluating the option `${showOption loc}':" value; | ^ 1150| inherit (res.defsFinal') highestPrio; (stack trace truncated; use '--show-trace' to show the full trace) error: attribute '"kanshi/config"' missing at /nix/store/6ml8k960pjkrbb0dp0v06iacfkr9jfj9-source/modules/services/kanshi.nix:367:40: 366| X-Reload-Triggers = lib.mkIf (cfg.settings != { }) [ 367| "${config.xdg.configFile.${configPath}.source}" | ^ 368| ]; note: trace involved the following derivations: derivation 'home-manager-generation' derivation 'home-manager-files' derivation 'kanshi.service' ``` This is based on the changes from https://github.com/nix-community/home-manager/pull/9583. ### Maintainer CC No maintainers listed, so c.c. @benjamb as the author of the changes ### System information ```markdown ❯ nix-shell -p nix-info --run "nix-info -m" fetching path input 'path:/nix/store/gx3lxb8dgifcimrgb0s00pfx69mab0sn-source' - system: `"x86_64-linux"` - host os: `Linux 6.18.33, NixOS, 26.11 (Zokor), 26.11.20260529.e9a7635` - multi-user?: `yes` - sandbox: `yes` - version: `nix-env (Lix, like Nix) 2.96.0-dev-pre20260531-dev_003946f System type: x86_64-linux Additional system types: i686-linux, x86_64-v1-linux, x86_64-v2-linux, x86_64-v3-linux Features: gc, signed-caches System configuration file: /etc/nix/nix.conf User configuration files: /home/bjorn/.config/nix/nix.conf:/nix/store/3w0p9xpd4q150gbwfppd364mrc7g76qc-cinnamon-settings-daemon-6.6.4/etc/xdg/nix/nix.conf:/etc/xdg/nix/nix.conf:/home/bjorn/.nix-profile/etc/xdg/nix/nix.conf:/nix/profile/etc/xdg/nix/nix.conf:/home/bjorn/.local/state/nix/profile/etc/xdg/nix/nix.conf:/etc/profiles/per-user/bjorn/etc/xdg/nix/nix.conf:/nix/var/nix/profiles/default/etc/xdg/nix/nix.conf:/run/current-system/sw/etc/xdg/nix/nix.conf Store directory: /nix/store State directory: /nix/var/nix Data directory: /nix/store/ig7j7ky4df4ar83r0cv560r9rj40qaqw-lix-2.96.0-dev-pre20260531-dev_003946f/share` - nixpkgs: `/nix/store/gx3lxb8dgifcimrgb0s00pfx69mab0sn-source` ```