Add universal-session to improve accessibility of SSS to all users

Nvidia Proprietary Drivers on a per-host basis

add solarized-light sss-active-palette option

add ~scheme-format~ interactive cmd to Emacs to format buffer with guix fmt

add ~make repl~ to start project repl (arei) for Scheme projects

add ruff package for python development

flatpaks are horribly slow to start