♻️ consolidate nix configs

nix/hosts/aristotle/configuration.nix

@@ -0,0 +1,37 @@
+{ pkgs, nixos-hardware, ... }:
+
+{
+  imports = [
+    # Include the results of the hardware scan.
+    ./hardware-configuration.nix
+    nixos-hardware.nixosModules.raspberry-pi-4
+    ../../modules/base/nixos.nix
+
+    ../../modules/ipfs/cluster.nix
+    ../../modules/sops
+  ];
+
+  hardware = {
+    raspberry-pi."4".poe-hat.enable = true;
+  };
+
+  time.timeZone = "America/Toronto";
+  networking = {
+    # networking.hostName = "nixos"; # Define your hostname.
+    # networking.wireless.enable = true;  # Enables wireless support via wpa_supplicant.
+
+    # The global useDHCP flag is deprecated, therefore explicitly set to false here.
+    # Per-interface useDHCP will be mandatory in the future, so this generated config
+    # replicates the default behaviour.
+    useDHCP = false;
+    interfaces.eth0.useDHCP = true;
+    interfaces.wlan0.useDHCP = true;
+    firewall.enable = false;
+  };
+
+  users.users.root.openssh.authorizedKeys.keys = [
+    "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIJ0mE4MyMnfd1b2nlBJT7kpZ6Vov+ILuGNfzdp5ZBNQe walkah@walkah.net"
+  ];
+
+  environment.systemPackages = with pkgs; [ libraspberrypi raspberrypi-eeprom ];
+}

nix/hosts/aristotle/hardware-configuration.nix

@@ -0,0 +1,18 @@
+# Do not modify this file!  It was generated by ‘nixos-generate-config’
+# and may be overwritten by future invocations.  Please make changes
+# to /etc/nixos/configuration.nix instead.
+{ lib, modulesPath, ... }:
+
+{
+  imports = [ (modulesPath + "/installer/scan/not-detected.nix") ];
+
+  fileSystems."/" = {
+    device = "/dev/disk/by-label/NIXOS_SD";
+    fsType = "ext4";
+    options = [ "noatime" ];
+  };
+
+  swapDevices = [ ];
+
+  powerManagement.cpuFreqGovernor = lib.mkDefault "ondemand";
+}