diff --git a/flake.lock b/flake.lock
index c510818..97c7ea8 100644
--- a/flake.lock
+++ b/flake.lock
@@ -16,6 +16,43 @@
         "type": "github"
       }
     },
+    "base16-schemes_2": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1696158499,
+        "narHash": "sha256-5yIHgDTPjoX/3oDEfLSQ0eJZdFL1SaCfb9d6M0RmOTM=",
+        "owner": "tinted-theming",
+        "repo": "base16-schemes",
+        "rev": "a9112eaae86d9dd8ee6bb9445b664fba2f94037a",
+        "type": "github"
+      },
+      "original": {
+        "owner": "tinted-theming",
+        "repo": "base16-schemes",
+        "type": "github"
+      }
+    },
+    "blog-generator": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nix-colors": "nix-colors",
+        "nixpkgs": "nixpkgs",
+        "rust-overlay": "rust-overlay"
+      },
+      "locked": {
+        "lastModified": 1760112475,
+        "narHash": "sha256-hnCdPTzAD92XQBW7eBzERUvf8wNRTCG5ih5iBpUlK8k=",
+        "owner": "adrlau",
+        "repo": "blog-generator",
+        "rev": "f447902d19ecc8f66806c399db758dcd132bf84a",
+        "type": "github"
+      },
+      "original": {
+        "owner": "adrlau",
+        "repo": "blog-generator",
+        "type": "github"
+      }
+    },
     "crane": {
       "locked": {
         "lastModified": 1731098351,
@@ -68,6 +105,24 @@
         "type": "github"
       }
     },
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1731533236,
+        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
     "gitignore": {
       "inputs": {
         "nixpkgs": [
@@ -120,7 +175,7 @@
           "nixpkgs"
         ],
         "pre-commit-hooks-nix": "pre-commit-hooks-nix",
-        "rust-overlay": "rust-overlay"
+        "rust-overlay": "rust-overlay_2"
       },
       "locked": {
         "lastModified": 1737639419,
@@ -156,6 +211,25 @@
         "type": "github"
       }
     },
+    "nix-colors_2": {
+      "inputs": {
+        "base16-schemes": "base16-schemes_2",
+        "nixpkgs-lib": "nixpkgs-lib_2"
+      },
+      "locked": {
+        "lastModified": 1707825078,
+        "narHash": "sha256-hTfge2J2W+42SZ7VHXkf4kjU+qzFqPeC9k66jAUBMHk=",
+        "owner": "misterio77",
+        "repo": "nix-colors",
+        "rev": "b01f024090d2c4fc3152cd0cf12027a7b8453ba1",
+        "type": "github"
+      },
+      "original": {
+        "owner": "misterio77",
+        "repo": "nix-colors",
+        "type": "github"
+      }
+    },
     "nixos-hardware": {
       "locked": {
         "lastModified": 1759261527,
@@ -174,16 +248,16 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1759281824,
-        "narHash": "sha256-FIBE1qXv9TKvSNwst6FumyHwCRH3BlWDpfsnqRDCll0=",
+        "lastModified": 1759831965,
+        "narHash": "sha256-vgPm2xjOmKdZ0xKA6yLXPJpjOtQPHfaZDRtH+47XEBo=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "5b5be50345d4113d04ba58c444348849f5585b4a",
+        "rev": "c9b6fb798541223bbb396d287d16f43520250518",
         "type": "github"
       },
       "original": {
         "owner": "NixOS",
-        "ref": "nixos-25.05",
+        "ref": "nixos-unstable",
         "repo": "nixpkgs",
         "type": "github"
       }
@@ -203,6 +277,21 @@
         "type": "github"
       }
     },
+    "nixpkgs-lib_2": {
+      "locked": {
+        "lastModified": 1697935651,
+        "narHash": "sha256-qOfWjQ2JQSQL15KLh6D7xQhx0qgZlYZTYlcEiRuAMMw=",
+        "owner": "nix-community",
+        "repo": "nixpkgs.lib",
+        "rev": "e1e11fdbb01113d85c7f41cada9d2847660e3902",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "nixpkgs.lib",
+        "type": "github"
+      }
+    },
     "nixpkgs-stable": {
       "locked": {
         "lastModified": 1730741070,
@@ -219,6 +308,38 @@
         "type": "github"
       }
     },
+    "nixpkgs_2": {
+      "locked": {
+        "lastModified": 1744536153,
+        "narHash": "sha256-awS2zRgF4uTwrOKwwiJcByDzDOdo3Q1rPZbiHQg/N38=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "18dd725c29603f582cf1900e0d25f9f1063dbf11",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs_3": {
+      "locked": {
+        "lastModified": 1759281824,
+        "narHash": "sha256-FIBE1qXv9TKvSNwst6FumyHwCRH3BlWDpfsnqRDCll0=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "5b5be50345d4113d04ba58c444348849f5585b4a",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-25.05",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
     "pre-commit-hooks-nix": {
       "inputs": {
         "flake-compat": [
@@ -248,16 +369,35 @@
     },
     "root": {
       "inputs": {
+        "blog-generator": "blog-generator",
         "home-manager": "home-manager",
         "lanzaboote": "lanzaboote",
-        "nix-colors": "nix-colors",
+        "nix-colors": "nix-colors_2",
         "nixos-hardware": "nixos-hardware",
-        "nixpkgs": "nixpkgs",
+        "nixpkgs": "nixpkgs_3",
         "sops-nix": "sops-nix",
         "unstable": "unstable"
       }
     },
     "rust-overlay": {
+      "inputs": {
+        "nixpkgs": "nixpkgs_2"
+      },
+      "locked": {
+        "lastModified": 1760063676,
+        "narHash": "sha256-s5Fjh43skH2L+avOGioLmEHoYZffDbg3abV5h0gjeew=",
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "rev": "897deed0923cc5a1d560c5176abe0d172ec9716d",
+        "type": "github"
+      },
+      "original": {
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "type": "github"
+      }
+    },
+    "rust-overlay_2": {
       "inputs": {
         "nixpkgs": [
           "lanzaboote",
@@ -298,6 +438,21 @@
         "type": "github"
       }
     },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    },
     "unstable": {
       "locked": {
         "lastModified": 1759036355,
diff --git a/flake.nix b/flake.nix
index 0b83b5d..b8c075f 100644
--- a/flake.nix
+++ b/flake.nix
@@ -24,6 +24,9 @@
 
     nixos-hardware.url = "github:NixOS/nixos-hardware/master";
 
+    
+    blog-generator.url = "github:adrlau/blog-generator";                                                                                                              
+
   };
 
   outputs =
@@ -36,6 +39,7 @@
       sops-nix,
       lanzaboote,
       nixos-hardware,
+      blog-generator,
       ...
     }@inputs:
     let
@@ -65,6 +69,10 @@
 
           nixos-hardware.nixosModules.dell-xps-13-9370
 
+
+          #temporarily for testing run my blog on my laptop
+          blog-generator.nixosModules.default
+
         ];
       };
 
diff --git a/home/niri.nix b/home/niri.nix
index b34d3ff..da473f5 100644
--- a/home/niri.nix
+++ b/home/niri.nix
@@ -235,7 +235,7 @@ let
         spawn-at-startup "mako"
         spawn-at-startup "swww-daemon"
         spawn-at-startup "sh" "-c" "while true; do waybar; done" //disabled to a systemd service. in a while because it sometimes crashes. 
-        spawn-at-startup "sh" "-c" "while true; do swww img --transition-step 2 \"$(find ~/Pictures/wallpapers/ -type l,f | shuf -n 1)\"; sleep 270; done"
+        spawn-at-startup "sh" "-c" "while true; do swww img  -f Nearest --transition-step 2 \"$(find ~/Pictures/wallpapers/ -type l,f | shuf -n 1)\"; sleep 270; done"
 
 
         // Uncomment this line to ask the clients to omit their client-side decorations if possible.
diff --git a/hosts/legolas/configuration.nix b/hosts/legolas/configuration.nix
index 2fa7dc9..3375269 100644
--- a/hosts/legolas/configuration.nix
+++ b/hosts/legolas/configuration.nix
@@ -31,6 +31,8 @@
     ../../modules/powerprofiles.nix
     ../../modules/basePackages.nix
     ../../modules/develPackages.nix
+    ../../modules/jupyterhub.nix
+    ../../modules/blog.nix
     ../../modules/desktopApplications.nix
 
   ];
diff --git a/modules/blog.nix b/modules/blog.nix
new file mode 100644
index 0000000..296c23b
--- /dev/null
+++ b/modules/blog.nix
@@ -0,0 +1,8 @@
+{ pkgs, ... }:                                                                                                                                               
+{
+  services.blog-generator = {
+    enable = true; 
+    contentDir = "/var/www/blog/content";
+    port = 8080;
+  };    
+} 
diff --git a/modules/develPackages.nix b/modules/develPackages.nix
index df2f8f4..9e1af21 100644
--- a/modules/develPackages.nix
+++ b/modules/develPackages.nix
@@ -57,6 +57,7 @@
     python3Packages.requests
     python3Packages.flake8
     python3Packages.torch
+    python3Packages.pycryptodome
 
     #dotnet-sdk_8
     #dotnet-sdk_9
diff --git a/modules/jupyterhub.nix b/modules/jupyterhub.nix
new file mode 100644
index 0000000..6df0353
--- /dev/null
+++ b/modules/jupyterhub.nix
@@ -0,0 +1,93 @@
+{ config, pkgs, lib, ... }:
+let
+  myPython = pkgs.python3; 
+
+  myJupyterHubEnv = myPython.withPackages (ps: with ps; [
+    jupyterhub
+    jupyterhub-systemdspawner 
+    ipython
+    jupyterlab
+    notebook
+    ipykernel
+    numpy
+    scipy
+    pandas
+    matplotlib
+    seaborn
+    scikit-learn
+  ]);
+
+  myJupyterLabEnv = myPython.withPackages (ps: with ps; [
+    jupyterhub
+    jupyterlab
+    ipykernel
+    numpy
+    scipy
+    pandas
+    matplotlib
+    seaborn
+    scikit-learn
+  ]);
+
+in
+{
+  environment.systemPackages = with pkgs; [
+    python3Packages.numpy
+    python3Packages.scipy
+    python3Packages.pandas
+    python3Packages.matplotlib
+    python3Packages.seaborn
+    python3Packages.scikit-learn
+  ];
+  
+  users.users.tdt4117 = {
+    isNormalUser = true;
+    home = "/home/tdt4117";
+    description = "tdt4117 - delete after h25";
+    extraGroups = [ ];  
+    # openssh.authorizedKeys.keys = [ "ssh-dss AAAAB3Nza... " ];
+  };
+
+  services.jupyterhub = {
+    jupyterhubEnv = myJupyterHubEnv;
+    jupyterlabEnv = myJupyterLabEnv;
+    enable = true;
+    port = 8770;
+    host = "0.0.0.0";
+    extraConfig = ''
+      c.Authenticator.allow_all = True
+      c.ConfigurableHTTPProxy.api_url = 'http://0.0.0.0:8770'
+      c.JupyterHub.bind_url = 'http://0.0.0.0:8771'
+      '';
+
+    kernels = {
+      python3 = let
+        env = (pkgs.python3.withPackages (pythonPackages: with pythonPackages; [
+                ipykernel
+                pandas
+                scikit-learn
+                seaborn
+                huggingface-hub
+                datasets
+                matplotlib
+                tqdm
+                numpy
+                scipy
+              ]));
+      in {
+        displayName = "Python 3 for machine learning";
+        argv = [
+          "${env.interpreter}"
+          "-m"
+          "ipykernel_launcher"
+          "-f"
+          "{connection_file}"
+        ];
+        language = "python";
+        logo32 = "${env}/${env.sitePackages}/ipykernel/resources/logo-32x32.png";
+        logo64 = "${env}/${env.sitePackages}/ipykernel/resources/logo-64x64.png";
+      };
+    };
+  };
+}
+