nix sysinfo reading is not reliable

[Brutus5000]

I tested your code and wondered why no system info is showing for me, where a similar application does.
As it turns out both my Arch Desktop as well as my NixOs server both do not provide lshw and required su for dmidecode.

As I was looking for replacing some C++ code, this is how my "reference" application does it:
https://github.com/FAForever/uid/blob/master/machine_info_linux.cpp
(in general it's parsing things individually from /sys files)

[marirs]

I'll look into it