diff --git a/flake.nix b/flake.nix
index dbea029..1b337b2 100644
--- a/flake.nix
+++ b/flake.nix
@@ -132,7 +132,6 @@
 
           home-manager.nixosModules.home-manager
           {
-            home-manager.useGlobalPkgs = true;
             home-manager.users.gunalx = import ./home/gunalx.nix;
             home-manager.backupFileExtension = "bac";
             home-manager.extraSpecialArgs = { inherit nix-colors inputs; };
@@ -152,6 +151,14 @@
               self.overlays.unstable
               niri.overlays.niri
             ];
+            home-manager.users.gunalx = {
+              nixpkgs.config.allowUnfree = true;
+              nixpkgs.overlays = [
+                self.overlays.custom
+                self.overlays.unstable
+                niri.overlays.niri
+              ];
+            };
           }
 
           sops-nix.nixosModules.sops
@@ -175,7 +182,6 @@
 
           home-manager.nixosModules.home-manager
           {
-            home-manager.useGlobalPkgs = true;
             home-manager.users.gunalx = import ./home/gunalx.nix;
             home-manager.backupFileExtension = "bac";
             home-manager.extraSpecialArgs = { inherit nix-colors inputs; };
@@ -195,13 +201,21 @@
               self.overlays.unstable
               niri.overlays.niri
             ];
+            home-manager.users.gunalx = {
+              nixpkgs.config.allowUnfree = true;
+              nixpkgs.overlays = [
+                self.overlays.custom
+                self.overlays.unstable
+                niri.overlays.niri
+              ];
+            };
           }
 
           sops-nix.nixosModules.sops
 
           lanzaboote.nixosModules.lanzaboote
 
-        ];
+          ];
       };
 
       # galadriel
diff --git a/hosts/legolas/hardware-configuration.nix b/hosts/legolas/hardware-configuration.nix
index ae18edd..b37f3f9 100644
--- a/hosts/legolas/hardware-configuration.nix
+++ b/hosts/legolas/hardware-configuration.nix
@@ -10,7 +10,7 @@
   imports = [ (modulesPath + "/installer/scan/not-detected.nix") ];
 
   #boot.kernelPackages = pkgs.linuxPackages_zen;
-  boot.kernelPackages = pkgs.linuxPackages_6_19;
+  boot.kernelPackages = pkgs.linuxPackages_latest;
 
   boot.kernelParams = [
     "mem_sleep_default=s2idle"
diff --git a/modules/nix.nix b/modules/nix.nix
index e6f48b2..f956c1d 100644
--- a/modules/nix.nix
+++ b/modules/nix.nix
@@ -50,34 +50,35 @@
         hostName = "localhost";
         system = "x86_64-linux";
         maxJobs = 4;
-        speedFactor = 8000;
+        speedFactor = 2000;
         supportedFeatures = [ ];
         mandatoryFeatures = [ ];
       }
       {
         hostName = "aragon";
-        #system = "x86_64-linux";
-        # if the builder supports building for multiple architectures,
-        # replace the previous line by, e.g.,
         systems = [
           "x86_64-linux"
           "aarch64-linux"
         ];
         maxJobs = 6;
-        speedFactor = 6001;
+        speedFactor = 6000;
         supportedFeatures = [ ];
         mandatoryFeatures = [ ];
+        sshUser = "root";
+        sshKey = "/root/.ssh/nixos";
+        protocol = "ssh";
       }
       {
         hostName = "galadriel";
         system = "x86_64-linux";
         maxJobs = 4;
-        speedFactor = 4001;
-        #supportedFeatures = [ "cuda" ];
+        speedFactor = 4000;
         supportedFeatures = [ ];
         mandatoryFeatures = [ ];
+        sshUser = "root";
+        sshKey = "/root/.ssh/nixos";
+        protocol = "ssh";
       }
-
     ];
     distributedBuilds = true;
   };
diff --git a/modules/openssh.nix b/modules/openssh.nix
index 29a77bc..20af68e 100644
--- a/modules/openssh.nix
+++ b/modules/openssh.nix
@@ -27,6 +27,17 @@ in
     #];
     authorizedKeysCommand = "${sshLookup}";
   };
+  programs.ssh.extraConfig = ''
+    Host aragon
+      Port 6969
+      ConnectTimeout 3
+    Host galadriel
+      Port 6969
+      ConnectTimeout 3
+    Host localhost
+      ConnectTimeout 3
+  '';
+
   services.endlessh-go = {
     enable = true;
     port = 22;
diff --git a/modules/python-packages.nix b/modules/python-packages.nix
index fa601c8..62098c5 100644
--- a/modules/python-packages.nix
+++ b/modules/python-packages.nix
@@ -40,8 +40,7 @@ ps: with ps; [
   authlib
   litellm
   openai
-  langchain
-  langchain-community
+
   pydantic
   pydantic-core
   docling-core
diff --git a/packages/android-cli/default.nix b/packages/android-cli/default.nix
index 1508d86..ef752db 100644
--- a/packages/android-cli/default.nix
+++ b/packages/android-cli/default.nix
@@ -17,7 +17,7 @@ let
 
     src = fetchurl {
       url = "https://dl.google.com/android/cli/latest/linux_x86_64/android";
-      hash = "sha256-v5hgB+1OVyiWnoqpfXwicXOSBm/XRuDmnNOwFndQuM4=";
+      hash = "sha256-k119FKk+V4dfpknbqdx7AZUA4u1tw+MJuq+4qOPh83Q=";
     };
 
     nativeBuildInputs = [ autoPatchelfHook ];
diff --git a/packages/llama-cpp-nightly/default.nix b/packages/llama-cpp-nightly/default.nix
index 8535526..a7214b6 100644
--- a/packages/llama-cpp-nightly/default.nix
+++ b/packages/llama-cpp-nightly/default.nix
@@ -79,13 +79,13 @@ let
 in
 effectiveStdenv.mkDerivation (finalAttrs: {
   pname = "llama-cpp-nightly";
-  version = "8763";
+  version = "8966";
 
   src = fetchFromGitHub {
     owner = "ggml-org";
     repo = "llama.cpp";
     tag = "b${finalAttrs.version}";
-    hash = "sha256-bDI7a7OMCbuZyaJX4o22fmQIyrGdzYkoIeVvxBYlnRI=";
+    hash = "sha256-3FuL0lyeQqwKE04QMx/0+pln2i0910L7TCDaoFjw7T8=";
     leaveDotGit = true;
     postFetch = ''
       git -C "$out" rev-parse --short HEAD > $out/COMMIT
diff --git a/packages/llama-swap/package.nix b/packages/llama-swap/package.nix
index 52ea369..001c8bc 100644
--- a/packages/llama-swap/package.nix
+++ b/packages/llama-swap/package.nix
@@ -17,7 +17,7 @@ let
 in
 buildGoModule (finalAttrs: {
   pname = "llama-swap";
-  version = "198";
+  version = "208";
 
   outputs = [
     "out"
@@ -28,7 +28,7 @@ buildGoModule (finalAttrs: {
     owner = "mostlygeek";
     repo = "llama-swap";
     tag = "v${finalAttrs.version}";
-    hash = "sha256-7fZUKDCtj8RGca53CkLwVpvNWX6ryTbS02Uz/+uZpTs=";
+    hash = "sha256-E+BqqQcCLlW/DWvjwC66ClV6yuQ5x7cAMkLPJkS3x5M=";
     leaveDotGit = true;
     postFetch = ''
       cd "$out"
diff --git a/packages/llama-swap/ui.nix b/packages/llama-swap/ui.nix
index a701eac..bb4282e 100644
--- a/packages/llama-swap/ui.nix
+++ b/packages/llama-swap/ui.nix
@@ -13,7 +13,7 @@ buildNpmPackage (finalAttrs: {
     owner = "mostlygeek";
     repo = "llama-swap";
     tag = "v${finalAttrs.version}";
-    hash = "sha256-FGrRwWgXTpH4h0MYCdMDagUskUZA+/s/dOjjkAigPQw=";
+    hash = "sha256-j7G2EkosqRGsQJB3XsdDZLvkubR/tQLKxX+FWykfuxk=";
   };
 
   npmDepsHash = "sha256-gTDsuWPLCWsPltioziygFmSQFdLqjkZpmmVWIWoZwoc=";
diff --git a/packages/s2cpp/default.nix b/packages/s2cpp/default.nix
index cf922cf..537505d 100644
--- a/packages/s2cpp/default.nix
+++ b/packages/s2cpp/default.nix
@@ -25,13 +25,13 @@ let
 in
 stdenv.mkDerivation (finalAttrs: {
   pname = "s2cpp";
-  version = "0-unstable-2025-04-05";
+  version = "0-unstable-2026-04-12";
 
   src = fetchFromGitHub {
     owner = "rodrigomatta";
     repo = "s2.cpp";
-    rev = "36a5fb058b740d8826f67d027bf46b3273fe4e3d";
-    hash = "sha256-C8BSUWNRrZKdaKHniAbeObq9fChvFQZ5HXcvSzgNsIw=";
+    rev = "e48ce8e1c3ee23acbac97ce078b8faab0a2da43c";
+    hash = "sha256-xlDYqimbqCBidkcmt5gIgMtYLw8gdR51qD3gFD0j7xE=";
     fetchSubmodules = true;
   };