Add config for jupyter

hosts/tsuki/configuration.nix

@@ -10,6 +10,7 @@
     ./services/grafana.nix
     ./services/hydra.nix
     # ./services/jitsi.nix
+    ./services/jupyter.nix
     # ./services/keycloak.nix
     # ./services/libvirt.nix
     ./services/matrix

hosts/tsuki/services/jupyter.nix

@@ -0,0 +1,35 @@
+{ pkgs, secrets, ... }:
+{
+  users.users.jupyter = {
+    group = "jupyter";
+  };
+
+  services.jupyter = {
+    enable = true;
+    group = "jupyter";
+    ip = "0.0.0.0";
+    port = secrets.ports.jupyterhub;
+    password = secrets.keys.hashed.jupyter;
+    kernels = {
+      pythonDS = let
+        env = (pkgs.python3.withPackages (pythonPackages: with pythonPackages; [
+          numpy
+          matplotlib
+          ipykernel
+        ]));
+      in {
+        displayName = "Python for data science";
+        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";
+      };
+    }; 
+  };
+}