kill xorg v2

bool Session::stopX()
    {
        spdlog::info("stopx");

        if (!m_X) {
            spdlog::info("Xorg app is nullptr");
            return false;
        }

        const auto pgidOpt = m_X->pgid();
        if (!pgidOpt) {
            spdlog::info("failed to get pgid for Xorg, some processes may persist after kill");
            return m_X->kill();
        }
        const auto pgid = *pgidOpt; // pgid of app process

        spdlog::info("search for xinit and xorg");

        for (const auto xinit: pids_by_name("xinit")
            | views::filter(_1->*&Pids::pgid == pgid)
        ) {
            spdlog::info("found xinit pid={} pgid={}", xinit.pid, xinit.pgid);
            for (const auto xorg : pids_by_name("Xorg")
                | views::filter(_1->*&Pids::ppid == xinit.pid)
            ) {
                spdlog::info("found Xorg pid={} pgid={}", xorg.pid, xorg.pgid);
                if (kill(-xorg.pgid, SIGKILL) == -1) {
                    spdlog::warn("failed to kill Xorg");
                }
            }
        }

        return m_X->kill();
    }