bug: `targets.darwin.keybindings` not generating correct output?

[ok-nick]

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

Hi, I'm having trouble using the targets.darwin.keybindings setting. It doesn't work with the home-manager generated output, but it does when I convert it to a different format as shown below.

Using the settings:

targets.darwin.keybindings = {
  # ctrl + left arrow
  "^\\UF702" = "moveWordBackward:";
  # ctrl + right arrow
  "^\\UF703" = "moveWordForward:";
};

Generates the following output:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>^\UF702</key>
    <string>moveWordBackward:</string>
    <key>^\UF703</key>
    <string>moveWordForward:</string>
</dict>
</plist>

Which doesn't work. If I set the file content to:

{
    "^\UF702" = "moveWordBackward:";
    "^\UF703" = "moveWordForward:";
}

It works perfectly fine. Is the wrong type of output being generated?

Maintainer CC

No response

System information

/nix/store/0c5hnhrh7sb6gsz1rjka2zhv48sfp9wf-stdenv-darwin
copying path '/nix/store/0c5hnhrh7sb6gsz1rjka2zhv48sfp9wf-stdenv-darwin' from 'https://cache.nixos.org'...
 - system: `"aarch64-darwin"`
 - host os: `Darwin 24.1.0, macOS 15.1`
 - multi-user?: `yes`
 - sandbox: `no`
 - version: `nix-env (Nix) 2.24.9`
 - channels(root): `"nixpkgs"`
 - nixpkgs: `/nix/store/zq2axpgzd5kykk1v446rkffj3bxa2m2h-source`