Refactor modules

Signed-off-by: Nikolaos Karaolidis <nick@karaolidis.com>

README.md

@@ -1,3 +1,35 @@
 # nix
 
 NixOS dotfiles and configuration.
+
+## Installation
+
+The below installation example is for a fresh `eirene-vm` virtual machine.
+
+### Mount NixOS Configuration
+
+```sh
+sudo -i
+mkdir /host
+mount -t virtiofs host /host
+```
+
+### Format Disks
+
+```sh
+nix --experimental-features "nix-command flakes" run github:nix-community/disko -- --mode disko /host/hosts/eirene/format.nix --arg device '"/dev/vda"'
+```
+
+### Install NixOS
+
+```sh
+mkdir -p /mnt/etc/nixos
+cp -r /host/* /mnt/etc/nixos
+nixos-install --root /mnt --flake /mnt/etc/nixos#eirene-vm
+```
+
+### Reboot
+
+```sh
+reboot
+```