Adventures in NixOS unstable

Nix-Container with IPs break

Because b9df84cd refactored the syntax of the nix expression, building container with private network broke.

This [pull request](https://github.com/NixOS/nixpkgs/pull/18915) fix it.

Keyboard stopped working

Because of linux kernel 4.4.20 the kernel module: i8042 is no longer loaded. I added the following to boot.initrd.availableKernelModules

- boot.initrd.availableKernelModules = [ "xhci_pci" "ehci_pci" "ahci" "usb_storage" "sd_mod" "rtsx_pci_sdmmc" ];
+ boot.initrd.availableKernelModules = [ "xhci_pci" "ehci_pci" "ahci" "usb_storage" "sd_mod" "rtsx_pci_sdmmc" "i8042" ];