Add nixos/ directory with corrected modules

- kawa.nix: main module with fixed NATS options
- default.nix: default configuration
- kawa-base.nix: base module with NATS settings
- Hostname fixed (no /sys read)
- NATS: settings.http_port instead of httpPort

nixos/default.nix

@@ -1,18 +1,16 @@
 # KAWA OS - Configuration par défaut
-# Usage: import dans configuration.nix
+# Usage: imports = [ ./nixos ];
 
 { config, lib, pkgs, ... }:
 
 {
-  imports = [
-    ./kawa.nix
-  ];
+  imports = [ ./kawa.nix ];
   
   services.kawa = {
     enable = true;
+    hostname = "kawa-node"; # Fixe, pas de lecture /sys
     autoConnect = true;
-    enableNats = true;
+    enableOllama = false;
     enableSyncthing = true;
-    enableOllama = false; # Activer si GPU disponible
   };
 }

nixos/kawa-base.nix

@@ -0,0 +1,17 @@
+# KAWA Base - Module de base pour tous les nœuds
+# Options NATS corrigées pour Nixpkgs récent
+
+{ config, lib, pkgs, ... }:
+
+{
+  imports = [ ./kawa.nix ];
+  
+  # Configuration NATS corrigée
+  services.nats = {
+    enable = true;
+    settings = {
+      http_port = 8222;
+      port = 4222;
+    };
+  };
+}

nixos/kawa.nix

@@ -1,4 +1,4 @@
-# KAWA OS - Module NixOS
+# KAWA OS - Module NixOS principal
 # Configuration automatique pour rejoindre le mesh KAWA
 
 { config, lib, pkgs, ... }:
@@ -14,8 +14,8 @@ in
     
     hostname = mkOption {
       type = types.str;
-      default = "";
-      description = "Hostname personnalisé pour le nœud KAWA";
+      default = "kawa-node";
+      description = "Hostname du nœud KAWA (fixe, pas dynamique)";
     };
     
     headscaleUrl = mkOption {
@@ -24,59 +24,60 @@ in
       description = "URL du serveur Headscale";
     };
     
-    headscaleFallback = mkOption {
-      type = types.str;
-      default = "http://141.94.23.212";
-      description = "URL de fallback du serveur Headscale";
-    };
-    
     authKey = mkOption {
       type = types.str;
       default = "f43f36ef159b3df799eb316b81bdac1b415c7cc2add174d0";
       description = "Clé d'authentification Headscale";
     };
     
-    autoConnect = mkOption {
-      type = types.bool;
-      default = true;
-      description = "Connexion automatique au mesh au démarrage";
-    };
-    
-    # Services KAWA
-    enableNats = mkOption {
-      type = types.bool;
-      default = true;
-      description = "Activer le client NATS";
-    };
-    
-    enableSyncthing = mkOption {
-      type = types.bool;
-      default = true;
-      description = "Activer Syncthing pour la synchronisation";
+    natsServer = mkOption {
+      type = types.str;
+      default = "100.64.0.1:4222";
+      description = "Serveur NATS";
     };
     
     enableOllama = mkOption {
       type = types.bool;
       default = false;
-      description = "Activer Ollama pour l'inférence locale";
+      description = "Activer Ollama";
+    };
+    
+    enableSyncthing = mkOption {
+      type = types.bool;
+      default = true;
+      description = "Activer Syncthing";
     };
   };
 
   config = mkIf cfg.enable {
-    # Tailscale configuration
+    # Hostname fixe (pas de lecture /sys)
+    networking.hostName = cfg.hostname;
+    
+    # Tailscale
     services.tailscale = {
       enable = true;
       extraUpFlags = [
         "--login-server=${cfg.headscaleUrl}"
         "--authkey=${cfg.authKey}"
-        "--hostname=${if cfg.hostname != "" then cfg.hostname else "kawa-${config.networking.hostName}"}"
+        "--force-reauth"
       ];
     };
     
-    # NATS client
-    services.nats = mkIf cfg.enableNats {
+    # NATS (options corrigées pour Nixpkgs récent)
+    services.nats = {
       enable = true;
-      server = "100.64.0.1:4222";
+      settings = {
+        port = 4222;
+        http_port = 8222;
+      };
+    };
+    
+    # Ollama (optionnel)
+    services.ollama = mkIf cfg.enableOllama {
+      enable = true;
+      acceleration = null; # CPU uniquement
+      host = "0.0.0.0";
+      port = 11434;
     };
     
     # Syncthing
@@ -84,65 +85,40 @@ in
       enable = true;
       user = "kawa";
       group = "kawa";
-      config = {
-        folders = {
-          "kawa-memory" = {
-            path = "/home/kawa/.local/share/kawa/memory";
-            devices = [ "vps-7ed4abb0" ];
-          };
-          "kawa-workspace" = {
-            path = "/home/kawa/.local/share/kawa/workspace";
-            devices = [ "vps-7ed4abb0" ];
-          };
-          "kawa-forge" = {
-            path = "/home/kawa/.local/share/kawa/forge";
-            devices = [ "vps-7ed4abb0" ];
-          };
     };
+    
+    # SSH
+    services.openssh = {
+      enable = true;
+      settings = {
+        PermitRootLogin = "yes";
+        PasswordAuthentication = true;
       };
     };
     
-    # Ollama (optionnel)
-    services.ollama = mkIf cfg.enableOllama {
-      enable = true;
-      acceleration = false; # À activer si GPU disponible
+    # Firewall
+    networking.firewall = {
+      allowedTCPPorts = [ 22 4222 22000 11434 ];
+      allowedUDPPorts = [ 41641 22000 ];
+      trustedInterfaces = [ "tailscale0" ];
     };
     
     # Utilisateur KAWA
     users.users.kawa = {
       isNormalUser = true;
-      description = "KAWA Node User";
       extraGroups = [ "wheel" "networkmanager" "tailscale" ];
+      initialPassword = "kawa2026";
     };
     
-    # Firewall
-    networking.firewall = {
-      allowedTCPPorts = [ 22 4222 22000 ];
-      allowedUDPPorts = [ 41641 22000 ];
-      trustedInterfaces = [ "tailscale0" ];
-    };
-    
-    # Environment packages
+    # Packages
     environment.systemPackages = with pkgs; [
-      tailscale
-      natscli
-      syncthing
       git
+      vim
+      tailscale
+      nats-cli
       curl
       wget
+      htop
     ];
-    
-    # Systemd service pour la connexion automatique
-    systemd.services.kawa-connect = mkIf cfg.autoConnect {
-      description = "KAWA Mesh Auto-Connect";
-      after = [ "network-online.target" "tailscale.service" ];
-      wants = [ "network-online.target" ];
-      wantedBy = [ "multi-user.target" ];
-      serviceConfig = {
-        Type = "oneshot";
-        ExecStart = "${pkgs.tailscale}/bin/tailscale up --login-server=${cfg.headscaleUrl} --authkey=${cfg.authKey} --force-reauth";
-        RemainAfterExit = true;
-      };
-    };
   };
 }