lib,

  EDITOR =
    if isEmacsEnabled
    then "emacsclient -t"
    else "vim";

    sessionVariables =
      rec {
        EDITOR =
          if isEmacsEnabled
          then "emacsclient -t"
          else "nvim";

    sessionVariables = lib.mkMerge [
      {
        inherit EDITOR;

      // (
        if isEmacsEnabled
        then {
          VISUAL = "emacs";
        }
        else {}
      )
      // (
        if isGPGenabled
        then {
          GPG_TTY = "$(tty)";
        }
        else {}
      );

      (lib.mkIf isEmacsEnabled {
        VISUAL = "emacs";
      })
      (lib.mkIf isGPGenabled {
        GPG_TTY = "$(tty)";
      })
    ];