Not the network diagram!!!

You can also use this lil guy, but by default you can’t install unfree software (not sure if that is different if you use flakes): nixpkgs.config.allowUnfree = true;

You forgot

nixpkgs.config.allowUnfreePredicate = pkg: builtins.elem (lib.getName pkg) [
    "steam"
    "steam-original"
    "steam-unwrapped"
    "steam-run"
  ];

Free software licenses (e.g. GPL) allow repackaging and selling the works, they just also require that any of the ‘repackaging’ is also under a free software license. You can even sell someone a piece of free software without making any changes, nobody is going to buy it though because it can usually be found for free somewhere else.

All you have to do is switch the storage to AHCI mode in BIOS. Windows has to have a special driver for it too in RAID mode, at least as of last time I tried to install it on a dell.