(C) 2019-08-25 environment.etc."sshd/banner-line".text = config.networking.hostName;
(C) 2019-08-25 fix man-pdf: man-pdf 1p env, man-pdf env: man $options -t $command | ps2pdf - $command.pdf


(A) 2019-08-26 run services as their own @users
(A) use lassulus xdg-open wrapper https://cgit.krebsco.de/stockholm/tree/lass/2configs/xdg-open.nix