{ user, home }:
{
  lib,
  inputs,
  system,
  ...
}:
{
  home-manager.users.${user}.programs.zsh = {
    shellAliases.nd = "nix-develop";

    initContent =
      let
        devShells = lib.strings.concatStringsSep " " (
          lib.attrsets.mapAttrsToList (key: _: key) inputs.self.devShells.${system}
        );
      in
      ''
        nix-develop() {
          local devshell=""

          while getopts "s:" opt; do
            case $opt in
              s)
                devshell=$OPTARG
                ;;
              *)
                echo "Usage: nix-develop [-s <devshell>]"
                return 1
                ;;
            esac
          done

          if [[ -z "$devshell" ]]; then
            if [ ! -f flake.nix ]; then
              cp "${./template.nix}" flake.nix
              chmod 755 flake.nix
            fi

            if [ ! treefmt.nix ]; then
              cp "${./treefmt.nix}" treefmt.nix
              chmod 755 treefmt.nix
            fi

            nix develop -c "$SHELL"
          else
            nix develop self#"$devshell" -c "$SHELL"
          fi
        }

        _nix-develop_completion() {
          local options=(
            '-s[Dev shell from root flake]:shell:(${devShells})'
          )

          _arguments -s $options
        }

        compdef _nix-develop_completion nix-develop
      '';
  };
}