diff --git a/.gitignore b/.gitignore
index 25e28f3..8147659 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 asahi*
+.key
diff --git a/common/base.nix b/common/base.nix
index f19cf81..ed85e62 100644
--- a/common/base.nix
+++ b/common/base.nix
@@ -9,6 +9,13 @@
     settings = {
       auto-optimise-store = true;
       trusted-users = [ "root" "@wheel" ];
+      substituters = [
+        "https://binarycache.ivabus.dev/public" # Yep, only public one here :)
+	"https://cache.nixos.org"
+      ];
+      trusted-public-keys = [
+        "public:9k8+78y5+1rICy+9e4raIiLP/dKDEvm9dyjj27vPS04="
+      ];
     };
     gc = {
       automatic = true;
@@ -39,4 +46,4 @@
   ];
 
   boot.tmp.cleanOnBoot = true;
-}
\ No newline at end of file
+}
diff --git a/common/user.nix b/common/user.nix
index 3e684cd..ee645d6 100644
--- a/common/user.nix
+++ b/common/user.nix
@@ -16,6 +16,7 @@ in rec {
       cargo
       rustc
       neofetch # I use NixOS BTW
+      duf
       htop
     ];
     shell = pkgs.zsh;
diff --git a/flake.lock b/flake.lock
index 9d78871..4a79430 100644
--- a/flake.lock
+++ b/flake.lock
@@ -7,11 +7,11 @@
         "rust-overlay": "rust-overlay"
       },
       "locked": {
-        "lastModified": 1692423274,
-        "narHash": "sha256-r84qq3YWbDtISIFh9tfNtmqVfBUYrhvIgE/Ivk+1F6Y=",
+        "lastModified": 1693064156,
+        "narHash": "sha256-EnZntHnlPqWZIoa593zDV4GSkfbLLAL6VAreMvM6JN4=",
         "owner": "tpwrules",
         "repo": "nixos-apple-silicon",
-        "rev": "5e5a0933387f914f2ad7033f2afbc8a074b9480b",
+        "rev": "bef25f9cdfd8513a42c175b88a1cb619e3ef5951",
         "type": "github"
       },
       "original": {
@@ -42,11 +42,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1692503956,
-        "narHash": "sha256-MOA6FKc1YgfGP3ESnjSYfsyJ1BXlwV5pGlY/u5XdJfY=",
+        "lastModified": 1693399033,
+        "narHash": "sha256-yXhiMo8MnE86sGtPIHAKaLHhmhe8v9tqGGotlUgKJvY=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "958c06303f43cf0625694326b7f7e5475b1a2d5c",
+        "rev": "f5c15668f9842dd4d5430787d6aa8a28a07f7c10",
         "type": "github"
       },
       "original": {
@@ -57,27 +57,27 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1692264070,
-        "narHash": "sha256-WepAkIL2UcHOj7JJiaFS/vxrA9lklQHv8p+xGL+7oQ0=",
+        "lastModified": 1692913444,
+        "narHash": "sha256-1SvMQm2DwofNxXVtNWWtIcTh7GctEVrS/Xel/mdc6iY=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "42c25608aa2ad4e5d3716d8d63c606063513ba33",
+        "rev": "18324978d632ffc55ef1d928e81630c620f4f447",
         "type": "github"
       },
       "original": {
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "42c25608aa2ad4e5d3716d8d63c606063513ba33",
+        "rev": "18324978d632ffc55ef1d928e81630c620f4f447",
         "type": "github"
       }
     },
     "nixpkgs_2": {
       "locked": {
-        "lastModified": 1692447944,
-        "narHash": "sha256-fkJGNjEmTPvqBs215EQU4r9ivecV5Qge5cF/QDLVn3U=",
+        "lastModified": 1693377291,
+        "narHash": "sha256-vYGY9bnqEeIncNarDZYhm6KdLKgXMS+HA2mTRaWEc80=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "d680ded26da5cf104dd2735a51e88d2d8f487b4d",
+        "rev": "e7f38be3775bab9659575f192ece011c033655f0",
         "type": "github"
       },
       "original": {
diff --git a/flake.nix b/flake.nix
index aa5b74d..a1c5fde 100644
--- a/flake.nix
+++ b/flake.nix
@@ -41,6 +41,16 @@
       ];
     };
 
+    # Raspberry Pi 4B 2GB RAM
+    nixosConfigurations."rubusidaeus" = nixpkgs.lib.nixosSystem {
+        system = "aarch64-linux";
+        modules = [
+          "${nixpkgs}/nixos/modules/installer/sd-card/sd-image-aarch64.nix"
+          home-manager.nixosModules.home-manager
+          ./machines/rubusidaeus
+        ];
+    };
+
     /* These machines will be configured later. */
     /*
     # Effundam = MacBook Air M1 (server usage). Will not be added to flake.nix until thunderbolt and apfs proper support
diff --git a/machines/celerrime/default.nix b/machines/celerrime/default.nix
index 8efdd22..89b32d2 100644
--- a/machines/celerrime/default.nix
+++ b/machines/celerrime/default.nix
@@ -7,7 +7,7 @@ in {
     ./hardware.nix
     my.modules
   ];
-  
+
   networking.hostName = "celerrime";
 
   boot.loader.systemd-boot.enable = true;
diff --git a/machines/rubusidaeus/default.nix b/machines/rubusidaeus/default.nix
new file mode 100644
index 0000000..498a57f
--- /dev/null
+++ b/machines/rubusidaeus/default.nix
@@ -0,0 +1,59 @@
+
+{ config, pkgs, lib, ... }:
+
+let
+  my = import ../..;
+  overlay = final: super: {
+    makeModulesClosure = x:
+      super.makeModulesClosure (x // { allowMissing = true; });
+  };
+in {
+  imports = [
+    # Not using ./hardware.nix as additional hardware file due to generation of images that doesn't change between installations. Maybe I should create dedicated raspberry.nix for all raspberry pies.
+    my.modules
+  ];
+
+  boot = {
+    kernelPackages = pkgs.linuxKernel.packages.linux_rpi4;
+    initrd.availableKernelModules = [ "xhci_pci" "usbhid" "usb_storage" ];
+    loader = {
+      grub.enable = false;
+      generic-extlinux-compatible.enable = true;
+    };
+  };
+
+  fileSystems = {
+    "/" = {
+      device = "/dev/disk/by-label/NIXOS_SD";
+      fsType = "ext4";
+      options = [ "noatime" ];
+    };
+  };
+
+  sdImage.compressImage = false;
+
+  networking.hostName = "rubusidaeus";
+
+  my.laptop.enable = false;
+  my.roles = {
+    design.enable = false;
+    devel.enable = false;
+    gaming.enable = false;
+    graphical.enable = false;
+    latex.enable = false;
+    media-client.enable = false;
+    torrent.enable = false;
+    virtualisation.enable = false;
+    yggdrasil-client.enable = true;
+  };
+
+  # Augghhh
+
+  nixpkgs.overlays = [ overlay ];
+
+  networking.useDHCP = true;
+
+  hardware.enableRedistributableFirmware = true;
+  system.stateVersion = "23.05";
+}
+
diff --git a/roles/devel.nix b/roles/devel.nix
index 2db5e75..0b63d9e 100644
--- a/roles/devel.nix
+++ b/roles/devel.nix
@@ -25,6 +25,7 @@ in {
     }
     # Architecture-specific packages and configuration
     (lib.mkIf (!pkgs.stdenv.isAarch64) {boot.binfmt.emulatedSystems = [ "aarch64-linux" ];})
+    (lib.mkIf (!pkgs.stdenv.isAarch32) {boot.binfmt.emulatedSystems = [ "armv6l-linux" ];})
     (lib.mkIf (!pkgs.stdenv.isx86_64) {boot.binfmt.emulatedSystems = [ "x86_64-linux" "i686-linux" ];})
     # Remove CLion from builds while I'm semi-online
     # Install CLion only if we are on x86_64
@@ -40,4 +41,4 @@ in {
       ];
     })
   ]);
-}
\ No newline at end of file
+}