commit c53d997d075236f6d8c2a8e9db0238e46391735a
Author: Xavier Lagraula <xavier.lagraula@proton.me>
Date:   Sun May 10 19:06:58 2026 +0200

    Initial framework: reusable modules, lib, pkgs, overlays, scripts, sample environment

diff --git a/README.md b/README.md
new file mode 100644
index 0000000..c5f508b
--- /dev/null
+++ b/README.md
@@ -0,0 +1,41 @@
+# NixOS Infrastructure Framework
+
+Reusable, environment-agnostic components for building and managing
+NixOS-based infrastructure.
+
+## Contents
+
+| Directory       | Purpose                                         |
+|-----------------|-------------------------------------------------|
+| `modules/`      | NixOS modules (machine types, services, users)  |
+| `lib/`          | Nix utility functions                           |
+| `pkgs/`         | Custom packages not in Nixpkgs                  |
+| `overlays/`     | Nixpkgs overlays                                |
+| `scripts/`      | Operational scripts (deploy, create LXC, etc.)  |
+| `environments/` | Example environments to get started             |
+
+## Getting Started
+
+1. Clone this repository.
+2. Create your own environment directory (see `environments/sample/`).
+3. Reference framework modules via relative paths or `fetchGit`.
+4. Add your host configurations, network layout, and secrets.
+
+## Creating Your Own Environment
+
+```
+environments/your-env/
+├── configuration.nix     # Environment entry point
+├── hosts/
+│   ├── servers/
+│   │   └── myhost/
+│   │       └── configuration.nix
+│   └── workstations/
+├── network/              # Subnets, VLANs, host assignments
+├── secrets/              # agenix-encrypted secrets
+└── users/                # User configurations
+```
+
+## License
+
+See [LICENSE](LICENSE).
\ No newline at end of file
diff --git a/default.nix b/default.nix
new file mode 100644
index 0000000..eae36a6
--- /dev/null
+++ b/default.nix
@@ -0,0 +1,34 @@
+# NixOS Infrastructure Framework
+#
+# Exports all reusable technical components.  Use from your environment:
+#
+#   framework = import /path/to/framework { };
+#   framework.modules.machine-types.lxc
+#   framework.modules.services.dns
+#
+{ ... }: {
+  modules = {
+    machine-types = {
+      lxc         = import ./modules/machine-types/lxc;
+      hypervisor  = import ./modules/machine-types/hypervisor;
+      vm          = import ./modules/machine-types/vm;
+      workstation = import ./modules/machine-types/workstation;
+    };
+    services = {
+      dns            = import ./modules/services/dns;
+      git-forge      = import ./modules/services/git-forge;
+      password-manager = import ./modules/services/password-manager;
+      reverse-proxy  = import ./modules/services/reverse-proxy;
+    };
+    user-profiles = {
+      admin    = import ./modules/user-profiles/admin;
+      dev      = import ./modules/user-profiles/dev;
+      standard = import ./modules/user-profiles/standard;
+      guest    = import ./modules/user-profiles/guest;
+      cam      = import ./modules/user-profiles/cam;
+    };
+  };
+  lib      = import ./lib;
+  pkgs     = import ./pkgs;
+  overlays = import ./overlays;
+}
\ No newline at end of file
diff --git a/environments/sample/hosts/dns01/configuration.nix b/environments/sample/hosts/dns01/configuration.nix
new file mode 100644
index 0000000..351ea9c
--- /dev/null
+++ b/environments/sample/hosts/dns01/configuration.nix
@@ -0,0 +1,26 @@
+{ config, pkgs, lib, ... }:
+
+{
+  imports = [
+    # Import the LXC machine type and DNS service from the framework
+    ../../../../modules/machine-types/lxc
+    ../../../../modules/services/dns/default.nix
+  ];
+
+  # Enable LXC machine type
+  lxc.enable = true;
+
+  # Host identity — replace with your own hostname and IP
+  networking.hostName = "dns01";
+  networking.useDHCP = true;
+
+  # DNS service configuration — adapt to your network
+  services.dns = {
+    enable = true;
+    recursion = "AllowOnlyForPrivateNetworks";
+    forwarders = [ "1.1.1.1" "8.8.8.8" ];
+    listenAddresses = [ "10.0.0.10" "127.0.0.1" "::1" ];
+  };
+
+  system.stateVersion = "25.11";
+}
\ No newline at end of file
diff --git a/environments/sample/users/alice/configuration.nix b/environments/sample/users/alice/configuration.nix
new file mode 100644
index 0000000..7277d60
--- /dev/null
+++ b/environments/sample/users/alice/configuration.nix
@@ -0,0 +1,14 @@
+{ config, pkgs, lib, ... }:
+
+{
+  # Sample user configuration — adapt to your needs
+  users.users.alice = {
+    isNormalUser = true;
+    description = "Alice (sample user)";
+    extraGroups = [ "wheel" ]; # Enable sudo access
+    openssh.authorizedKeys.keys = [
+      # Replace with your own SSH public key
+      "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIM7... alice@example"
+    ];
+  };
+}
\ No newline at end of file
diff --git a/lib/README.md b/lib/README.md
new file mode 100644
index 0000000..14e6f14
--- /dev/null
+++ b/lib/README.md
@@ -0,0 +1,4 @@
+# Lib
+Custom Nix utility functions and helpers.
+Used across the configuration to factorize code.
+Simplifies data and string manipulation.
\ No newline at end of file
diff --git a/modules/README.md b/modules/README.md
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index 0000000..b001121
--- /dev/null
+++ b/modules/README.md
@@ -0,0 +1,2 @@
+# Modules
+Reusable NixOS modules for the infrastructure.
diff --git a/modules/machine-types/hypervisor/default.nix b/modules/machine-types/hypervisor/default.nix
new file mode 100644
index 0000000..3e579ec
--- /dev/null
+++ b/modules/machine-types/hypervisor/default.nix
@@ -0,0 +1,4 @@
+{ config, pkgs, lib, ... }:
+{
+  # TODO: Add hypervisor-specific configuration
+}
\ No newline at end of file
diff --git a/modules/machine-types/lxc/default.nix b/modules/machine-types/lxc/default.nix
new file mode 100644
index 0000000..cb6076e
--- /dev/null
+++ b/modules/machine-types/lxc/default.nix
@@ -0,0 +1,48 @@
+{ config, modulesPath, pkgs, lib, ... }:
+{
+  imports = [ (modulesPath + "/virtualisation/proxmox-lxc.nix") ];
+  nix.settings = { sandbox = false; };  
+  proxmoxLXC = {
+    manageNetwork = false;
+    privileged = true;
+  };
+
+  # Enable LXC specific options
+  options.lxc = {
+    enable = lib.mkOption {
+      type = lib.types.bool;
+      default = true;
+      description = "Enable LXC machine type";
+    };
+  };
+
+  services.fstrim.enable = false; # Let Proxmox host handle fstrim
+
+  # Cache DNS lookups to improve performance
+  services.resolved = {
+    extraConfig = ''
+      Cache=true
+      CacheFromLocalhost=true
+    '';
+  };
+
+  # Default configuration for a LXC container
+  config = lib.mkIf config.lxc.enable {
+    # Disabling useless services
+    services.avahi.daemon.enable = false; # TODO : review the need for avahi in a container
+    services.bluetooth.enable = false;
+    services.printing.enable = false;
+
+    # Optimzing for conainters
+    boot.kernelModules = [ ]; # TODO : review the disabling of all kernelModules in a container
+    powerManagement.enable = false;
+
+    # Limiter les ressources si nécessaire
+    # TODO : review the need to limit ZFS pools in the LXC container configuration, in my ZFSless context
+    boot.zfs.extraPools = [ ];
+
+  };
+
+  system.stateVersion = "25.11";
+
+}
\ No newline at end of file
diff --git a/modules/machine-types/vm/default.nix b/modules/machine-types/vm/default.nix
new file mode 100644
index 0000000..d8c8687
--- /dev/null
+++ b/modules/machine-types/vm/default.nix
@@ -0,0 +1,4 @@
+{ config, pkgs, lib, ... }:
+{
+  # TODO: Add VM-specific configuration
+}
\ No newline at end of file
diff --git a/modules/machine-types/workstation/default.nix b/modules/machine-types/workstation/default.nix
new file mode 100644
index 0000000..726ba3f
--- /dev/null
+++ b/modules/machine-types/workstation/default.nix
@@ -0,0 +1,4 @@
+{ config, pkgs, lib, ... }:
+{
+  # TODO: Add workstation-specific configuration
+}
\ No newline at end of file
diff --git a/modules/secrets/default.nix b/modules/secrets/default.nix
new file mode 100644
index 0000000..f12a23a
--- /dev/null
+++ b/modules/secrets/default.nix
@@ -0,0 +1,22 @@
+{ config, pkgs, lib, ... }:
+
+{
+  options.secrets = {
+    enable = lib.mkEnableOption "agenix secret management";
+
+    identity = lib.mkOption {
+      type = lib.types.path;
+      default = "/etc/ssh/ssh_host_ed25519_key";
+      description = "Path to the SSH host private key used for age decryption.";
+    };
+  };
+
+  config = lib.mkIf config.secrets.enable {
+    age = {
+      identityPaths = [ config.secrets.identity ];
+      secrets = { };
+    };
+
+    environment.systemPackages = with pkgs; [ agenix ];
+  };
+}
\ No newline at end of file
diff --git a/modules/services/dns/default.nix b/modules/services/dns/default.nix
new file mode 100644
index 0000000..1014050
--- /dev/null
+++ b/modules/services/dns/default.nix
@@ -0,0 +1,116 @@
+{ config, pkgs, lib, ... }:
+
+let
+  cfg = config.services.dns;
+  dnsPkg = if cfg.package != null then cfg.package else pkgs.technitium-dns-server;
+
+  # Build the config.json for Technitium DNS Server.
+  # The server reads this file on startup from its config directory.
+  configJson = {
+    WebServicePort = cfg.webPort;
+    DNSListenerPort = cfg.dnsPort;
+    Recursion = cfg.recursion;
+    Forwarders = cfg.forwarders;
+    Log = false;
+    CachePrefetch = false;
+    AllowTtlOverride = true;
+  } // lib.optionalAttrs (cfg.adminPasswordFile != null) {
+    # Password hash will be set by the activation script on first run
+    # using the value from adminPasswordFile.
+  } // lib.optionalAttrs (cfg.listenAddresses != [ ]) {
+    ListenAddresses = cfg.listenAddresses;
+  } // lib.optionalAttrs (cfg.allowZoneTransfer != [ ]) {
+    AllowZoneTransfer = cfg.allowZoneTransfer;
+  } // cfg.extraConfig;
+
+  configFile = pkgs.writeText "technitium-dns-config.json"
+    (builtins.toJSON configJson);
+in
+
+{
+  imports = [
+    ./options.nix
+  ];
+
+  config = lib.mkIf cfg.enable {
+
+    environment.systemPackages = [ dnsPkg ];
+
+    # Create the config directory and deploy initial config.json
+    systemd.tmpfiles.rules = [
+      "d ${cfg.configDir} 0750 dns dns - -"
+    ];
+
+    systemd.services.technitium-dns-server = {
+      description = "Technitium DNS Server";
+      wantedBy = [ "multi-user.target" ];
+      after = [ "network.target" ];
+      wants = [ "network-online.target" ];
+
+      # Generate a password hash if adminPasswordFile is provided.
+      # The server is stopped on first run if no password hash exists,
+      # so we pre-seed the config with the hashed password.
+      preStart = ''
+        if [ -f "${cfg.configDir}/config.json" ]; then
+          # Config already exists, do not overwrite
+          true
+        else
+          install -m 0640 ${configFile} ${cfg.configDir}/config.json
+          ${lib.optionalString (cfg.adminPasswordFile != null) ''
+            if [ -f "${cfg.adminPasswordFile}" ]; then
+              # .NET-compatible SHA256 hash of the password
+              PASSWORD=$(cat "${cfg.adminPasswordFile}" | tr -d '\n')
+              HASH=$(echo -n "$PASSWORD" | ${pkgs.openssl}/bin/openssl dgst -sha256 -hex | cut -d' ' -f2)
+              ${pkgs.jq}/bin/jq \
+                ".AdminPassword = \"$HASH\" | .Pbkdf2Iterations = 600000" \
+                ${cfg.configDir}/config.json > ${cfg.configDir}/config.json.tmp
+              mv ${cfg.configDir}/config.json.tmp ${cfg.configDir}/config.json
+            fi
+          ''}
+        fi
+      '';
+
+      serviceConfig = {
+        Type = "simple";
+        ExecStart = "${dnsPkg}/bin/technitium-dns-server ${cfg.configDir}";
+        User = "dns";
+        Group = "dns";
+        Restart = "on-failure";
+        RestartSec = "5s";
+        LimitNOFILE = 1048576;
+        # Protect the system
+        ProtectSystem = "full";
+        ProtectHome = true;
+        PrivateTmp = true;
+        NoNewPrivileges = true;
+        ReadWritePaths = [ cfg.configDir ];
+      };
+    };
+
+    # Create the dns system user and group
+    users.users.dns = {
+      description = "Technitium DNS Server daemon user";
+      group = "dns";
+      isSystemUser = true;
+      home = cfg.configDir;
+      createHome = true;
+    };
+
+    users.groups.dns = { };
+
+    # Open firewall ports for DNS (UDP/TCP 53) and optionally the web interface
+    networking.firewall = lib.mkMerge [
+      {
+        allowedTCPPorts = [ cfg.dnsPort ];
+        allowedUDPPorts = [ cfg.dnsPort ];
+      }
+      # Allow web admin access only if listenAddresses restricts it to localhost
+      (lib.mkIf (cfg.listenAddresses == [ ] || builtins.elem "127.0.0.1" cfg.listenAddresses) {
+        allowedTCPPorts = [ cfg.webPort ];
+      })
+    ];
+
+    # Ensure DNS resolution is available locally before starting
+    networking.nameservers = lib.mkAfter [ "127.0.0.1" ];
+  };
+}
\ No newline at end of file
diff --git a/modules/services/dns/options.nix b/modules/services/dns/options.nix
new file mode 100644
index 0000000..8d57cc2
--- /dev/null
+++ b/modules/services/dns/options.nix
@@ -0,0 +1,79 @@
+{ config, lib, ... }:
+
+let
+  inherit (lib) types mkOption;
+in
+
+{
+  options.services.dns = {
+    enable = mkOption {
+      type = types.bool;
+      default = false;
+      description = "Enable the Technitium DNS Server";
+    };
+
+    package = mkOption {
+      type = types.package;
+      default = null;
+      description = "Technitium DNS Server package to use. Defaults to pkgs.technitium-dns-server.";
+    };
+
+    webPort = mkOption {
+      type = types.port;
+      default = 5380;
+      description = "HTTP port for the Technitium web administration interface";
+    };
+
+    dnsPort = mkOption {
+      type = types.port;
+      default = 53;
+      description = "DNS server port (both TCP and UDP)";
+    };
+
+    recursion = mkOption {
+      type = types.enum [ "AllowOnlyForPrivateNetworks" "AllowAll" "DenyAll" ];
+      default = "AllowOnlyForPrivateNetworks";
+      description = "Recursion policy for DNS queries";
+    };
+
+    forwarders = mkOption {
+      type = types.listOf types.str;
+      default = [ ];
+      description = "Upstream DNS forwarders (e.g. [ \"1.1.1.1\" \"8.8.8.8\" ]). Empty means use root hints";
+    };
+
+    configDir = mkOption {
+      type = types.str;
+      default = "/etc/dns";
+      description = "Directory for persistent Technitium DNS configuration and zone data";
+    };
+
+    adminPasswordFile = mkOption {
+      type = types.nullOr types.str;
+      default = null;
+      description = ''
+        Path to a file containing the admin password for the web interface.
+        If not set, the default credentials (admin/admin) are used.
+        Use agenix or sops-nix to provide this file securely.
+      '';
+    };
+
+    listenAddresses = mkOption {
+      type = types.listOf types.str;
+      default = [ ];
+      description = "IP addresses to listen on. Empty means listen on all interfaces";
+    };
+
+    allowZoneTransfer = mkOption {
+      type = types.listOf types.str;
+      default = [ ];
+      description = "IP addresses or subnets allowed to request zone transfers (AXFR/IXFR)";
+    };
+
+    extraConfig = mkOption {
+      type = types.attrsOf types.anything;
+      default = { };
+      description = "Additional Technitium DNS configuration options as an attribute set";
+    };
+  };
+}
\ No newline at end of file
diff --git a/modules/services/git-forge/default.nix b/modules/services/git-forge/default.nix
new file mode 100644
index 0000000..7e4e4cd
--- /dev/null
+++ b/modules/services/git-forge/default.nix
@@ -0,0 +1,90 @@
+{ config, pkgs, lib, ... }:
+
+let
+  cfg = config.services.git-forge;
+  inherit (lib) mkIf mkOption types;
+in
+
+{
+  options.services.git-forge = {
+    enable = mkOption {
+      type = types.bool;
+      default = false;
+      description = "Enable the git forge service (Forgejo)";
+    };
+
+    domain = mkOption {
+      type = types.str;
+      default = "git.lagraula.fr";
+      description = "Domain name for the Forgejo instance";
+    };
+
+    sshPort = mkOption {
+      type = types.port;
+      default = 2222;
+      description = "SSH port for Git operations (avoid conflict with host SSH on 22)";
+    };
+
+    httpPort = mkOption {
+      type = types.port;
+      default = 3000;
+      description = "HTTP port for the Forgejo web interface";
+    };
+
+    dataDir = mkOption {
+      type = types.str;
+      default = "/var/lib/forgejo";
+      description = "Data directory for Forgejo repositories and database";
+    };
+
+    databaseType = mkOption {
+      type = types.enum [ "sqlite3" "postgres" "mysql" ];
+      default = "sqlite3";
+      description = "Database backend type";
+    };
+
+    settings = mkOption {
+      type = types.attrsOf types.anything;
+      default = { };
+      description = "Additional Forgejo settings (merged into services.forgejo.settings)";
+    };
+  };
+
+  config = mkIf cfg.enable {
+    # Use the built-in NixOS forgejo module
+    services.forgejo = {
+      enable = true;
+      package = pkgs.forgejo;
+      settings = lib.recursiveUpdate {
+        server = {
+          DOMAIN = cfg.domain;
+          HTTP_PORT = cfg.httpPort;
+          HTTP_ADDR = "0.0.0.0";
+          ROOT_URL = "https://${cfg.domain}";
+          SSH_PORT = cfg.sshPort;
+          SSH_LISTEN_PORT = cfg.sshPort;
+        };
+        service = {
+          DISABLE_REGISTRATION = false;
+        };
+        "repository".ROOT = "${cfg.dataDir}/repos";
+      } (lib.mapAttrs (section: values: lib.mapAttrs (key: value: lib.mkDefault value) values) cfg.settings);
+
+      database = {
+        type = cfg.databaseType;
+      };
+
+      dump = {
+        type = "tar.zst";
+      };
+
+      # LXC container specifics - use the existing forgejo user
+      stateDir = cfg.dataDir;
+    };
+
+    # Open firewall ports for HTTP and SSH (git protocol)
+    networking.firewall = lib.mkIf config.services.forgejo.enable {
+      allowedTCPPorts = [ cfg.httpPort cfg.sshPort ];
+    };
+  };
+}
\ No newline at end of file
diff --git a/modules/services/password-manager/default.nix b/modules/services/password-manager/default.nix
new file mode 100644
index 0000000..3cf690f
--- /dev/null
+++ b/modules/services/password-manager/default.nix
@@ -0,0 +1,90 @@
+{ config, pkgs, lib, ... }:
+
+let
+  cfg = config.services.password-manager;
+  inherit (lib) mkIf mkOption types;
+in
+
+{
+  options.services.password-manager = {
+    enable = mkOption {
+      type = types.bool;
+      default = false;
+      description = "Enable the password manager service (Vaultwarden)";
+    };
+
+    domain = mkOption {
+      type = types.str;
+      default = "pass.lagraula.fr";
+      description = "Domain name for the Vaultwarden instance";
+    };
+
+    port = mkOption {
+      type = types.port;
+      default = 8080;
+      description = "HTTP port for the Vaultwarden web interface";
+    };
+
+    dataDir = mkOption {
+      type = types.str;
+      default = "/var/lib/vaultwarden";
+      description = "Data directory for Vaultwarden persistent state";
+    };
+
+    dbBackend = mkOption {
+      type = types.enum [ "sqlite" "mysql" "postgresql" ];
+      default = "sqlite";
+      description = "Database backend type";
+    };
+
+    adminTokenFile = mkOption {
+      type = types.nullOr types.str;
+      default = null;
+      description = ''
+        Path to a file containing the admin token for the /admin panel.
+        Use agenix or sops-nix to provide this file securely.
+      '';
+    };
+
+    signupsAllowed = mkOption {
+      type = types.bool;
+      default = true;
+      description = "Allow new user registration";
+    };
+
+    extraConfig = mkOption {
+      type = types.attrsOf (types.nullOr (types.oneOf [ types.bool types.str types.int types.port ]));
+      default = { };
+      description = "Additional Vaultwarden config options as attribute set (mapped to env vars)";
+    };
+  };
+
+  config = mkIf cfg.enable {
+    # Use the built-in NixOS vaultwarden module
+    services.vaultwarden = {
+      enable = true;
+      package = pkgs.vaultwarden;
+      webVaultPackage = pkgs.vaultwarden-webvault;
+      inherit (cfg) dbBackend;
+      config = {
+        DOMAIN = "https://${cfg.domain}";
+        PORT = cfg.port;
+        SIGNUPS_ALLOWED = cfg.signupsAllowed;
+      } // (lib.mapAttrs (name: value:
+        if value == true then "true"
+        else if value == false then "false"
+        else toString value
+      ) cfg.extraConfig);
+    } // lib.optionalAttrs (cfg.adminTokenFile != null) {
+      environmentFile = cfg.adminTokenFile;
+      config = {
+        ADMIN_TOKEN = null; # Will be read from environmentFile
+      };
+    };
+
+    # Open firewall port
+    networking.firewall = mkIf config.services.vaultwarden.enable {
+      allowedTCPPorts = [ cfg.port ];
+    };
+  };
+}
\ No newline at end of file
diff --git a/modules/services/reverse-proxy/default.nix b/modules/services/reverse-proxy/default.nix
new file mode 100644
index 0000000..2786b41
--- /dev/null
+++ b/modules/services/reverse-proxy/default.nix
@@ -0,0 +1,56 @@
+{ config, pkgs, lib, ... }:
+
+let
+  # Récupère la liste des services depuis la configuration
+  publicServices = config.services.reverse-proxy.publicServices or [];
+in
+{
+  # Options pour le module reverse-proxy
+  options.services.reverse-proxy = {
+    publicServices = lib.mkOption {
+      type = lib.types.listOf (lib.types.submodule {
+        options = {
+          host = lib.mkOption { type = lib.types.str; };
+          internalHost = lib.mkOption { type = lib.types.str; };
+          port = lib.mkOption { type = lib.types.int; default = 80; };
+        };
+      });
+      default = [];
+      description = "Liste des services à exposer via le reverse proxy";
+    };
+  };
+
+  # Configuration de Caddy
+  config = lib.mkIf (config.services.reverse-proxy.publicServices or []) != [] {
+    services.caddy = {
+      enable = true;
+      virtualHosts = map (service: {
+        host = "${service.host}.lagraula.fr";
+        reverseProxy = "http://${service.internalHost}.lagraula.fr:${toString service.port}";
+        tls = {
+          email = config.services.caddy.email or "xavier@lagraula.fr";
+        };
+      }) (config.services.reverse-proxy.publicServices or []);
+
+      # Configuration globale pour Caddy
+      extraConfig = ''
+        {
+          # Rate limiting global (optionnel)
+          rate_limit {
+            requests 100
+            burst 200
+            interval 1m
+          }
+          # Logging
+          log {
+            output file /var/log/caddy/access.log
+          }
+        }
+      '';
+    };
+
+    # Ouvrir les ports firewall pour HTTP/HTTPS
+    networking.firewall.allowedTCPPorts = [ 80 443 ];
+    networking.firewall.allowedUDPPorts = [];
+  };
+}
\ No newline at end of file
diff --git a/modules/user-profiles/admin.nix b/modules/user-profiles/admin.nix
new file mode 100644
index 0000000..e69de29
diff --git a/modules/user-profiles/cam.nix b/modules/user-profiles/cam.nix
new file mode 100644
index 0000000..e69de29
diff --git a/modules/user-profiles/dev.nix b/modules/user-profiles/dev.nix
new file mode 100644
index 0000000..e69de29
diff --git a/modules/user-profiles/guest.nix b/modules/user-profiles/guest.nix
new file mode 100644
index 0000000..e69de29
diff --git a/modules/user-profiles/standard.nix b/modules/user-profiles/standard.nix
new file mode 100644
index 0000000..e69de29
diff --git a/overlays/README.md b/overlays/README.md
new file mode 100644
index 0000000..bd78723
--- /dev/null
+++ b/overlays/README.md
@@ -0,0 +1,4 @@
+# Overlays
+Custom modifications and extensions to Nixpkgs.
+Applies patches or version overrides to existing packages.
+Applied globally across the infrastructure.
\ No newline at end of file
diff --git a/overlays/custom-pkgs.nix b/overlays/custom-pkgs.nix
new file mode 100644
index 0000000..974bce8
--- /dev/null
+++ b/overlays/custom-pkgs.nix
@@ -0,0 +1,4 @@
+self: super: {
+  # Custom packages and overrides for nixos-infra
+  # agenix is already available in nixpkgs — no custom overlay needed.
+}
\ No newline at end of file
diff --git a/pkgs/README.md b/pkgs/README.md
new file mode 100644
index 0000000..3e6f505
--- /dev/null
+++ b/pkgs/README.md
@@ -0,0 +1,4 @@
+# Packages
+Custom software packages not found in upstream Nixpkgs.
+Contains project-specific derivations (default.nix).
+Can be referenced via overlays or directly by hosts.
\ No newline at end of file
diff --git a/pkgs/default.nix b/pkgs/default.nix
new file mode 100644
index 0000000..eac1464
--- /dev/null
+++ b/pkgs/default.nix
@@ -0,0 +1,8 @@
+let
+  spec = builtins.fromJSON (builtins.readFile ./nixpkgs.json);
+in
+import (builtins.fetchTarball {
+  url = "https://github.com/NixOS/nixpkgs/archive/${spec.rev}.tar.gz";
+  sha256 = spec.sha256;
+}) {}
+# TODO: add a nixos-infra module
\ No newline at end of file
diff --git a/pkgs/nixpkgs.json b/pkgs/nixpkgs.json
new file mode 100644
index 0000000..2e98baa
--- /dev/null
+++ b/pkgs/nixpkgs.json
@@ -0,0 +1,5 @@
+{
+  "url": "https://github.com/NixOS/nixpkgs/archive/755f5aa91337890c432639c60b6064bb7fe67769.tar.gz",
+  "rev": "755f5aa91337890c432639c60b6064bb7fe67769",
+  "sha256": "1lmn8dicfwmsfdaiw18xjjys78bal6yjy3a41j02my7kw0wlb76a"
+}
diff --git a/scripts/README.md b/scripts/README.md
new file mode 100644
index 0000000..9bcb7e0
--- /dev/null
+++ b/scripts/README.md
@@ -0,0 +1,107 @@
+# Scripts
+
+Utility scripts for infrastructure management.
+Covers deployment, LXC container creation and bootstrap,
+initial configuration of new NixOS machines, and age key generation.
+
+## Scripts Overview
+
+### `create-lxc-nixos.sh` — Create and deploy a NixOS LXC container
+
+Creates a NixOS LXC container on a remote Proxmox VE hypervisor, then
+bootstraps it with the initial NixOS configuration and runs `deploy.sh`
+to apply the host-specific configuration.
+
+```bash
+# Usage
+./create-lxc-nixos.sh <short_name> [options]
+
+# Example: create dns01 with static IPv4 and IPv6 token
+./create-lxc-nixos.sh dns01 \
+  --ip 10.40.0.10/24 \
+  --ip6 ::a:b:c:d \
+  --pve-host pve01.prod.lagraula.fr
+
+# Dry run to preview the commands
+./create-lxc-nixos.sh dns01 --dry-run
+```
+
+**Bootstrap process:**
+1. `pct create` — create the container from the NixOS template
+2. `pct start <CT_ID>` — start the container
+3. Wait for the container to be ready (polling `pct exec`)
+4. `pct push initial-lxc-configuration.nix` → `/etc/nixos/configuration.nix`
+5. `pct push deploy.sh` → `/usr/local/bin/deploy-nixos`
+6. `pct exec nixos-rebuild switch` — apply initial config (SSH, git, curl)
+7. `pct exec deploy-nixos` — clone repo and apply host-specific config
+
+### `deploy.sh` — Deploy NixOS configuration from Git repository
+
+Clones or updates the nixos-infra repository, detects the hostname,
+finds the corresponding configuration file, and applies it with
+`nixos-rebuild switch`.
+
+```bash
+# Usage
+./deploy.sh [options]
+
+# Options
+-u, --repo-url URL    Git repository URL (default: https://gitea.lagraula.fr/...)
+-d, --repo-dir DIR    Local directory (default: /etc/nixos-infra)
+-b, --branch BRANCH   Git branch (default: main)
+-n, --dry-run         Simulate without making changes
+```
+
+**Configuration lookup order:**
+1. `hosts/servers/<hostname>/configuration.nix`
+2. `hosts/workstations/<hostname>/configuration.nix`
+
+### `initial-lxc-configuration.nix` — Bootstrap NixOS configuration (LXC)
+
+Minimal NixOS configuration pushed to a new LXC container during the
+bootstrap phase. Installs SSH, git, and curl so the container can
+clone the repository and apply its specific configuration.
+
+**Pushed to `/etc/nixos/configuration.nix` by `create-lxc-nixos.sh`.**
+
+### `gen-secrets-keys.sh` — Generate age public keys for agenix
+
+Connects to each host in the infrastructure, retrieves its SSH host
+key via `ssh-keyscan`, converts it to an age public key with
+`ssh-to-age`, and stores it in `secrets/pubkeys/<hostname>.age`.
+
+```bash
+# Usage
+./gen-secrets-keys.sh
+
+# Prerequisites
+#   nix-shell -p ssh-to-age
+```
+
+**After generating keys, encrypt secrets with:**
+```bash
+age -r $(cat secrets/pubkeys/<hostname>.age) -o secrets/<name>.age
+agenix -e secrets/<name>.age
+```
+
+### `update-nixpkgs.sh` — Update the nixpkgs pin
+
+Updates `pkgs/nixpkgs.json` with the latest commit from nixpkgs stable.
+
+## Deployment workflow (LXC containers)
+
+```
+create-lxc-nixos.sh         # Step 1: Create + bootstrap
+  └─ pct create
+  └─ pct push initial-lxc-configuration.nix
+  └─ pct push deploy.sh
+  └─ pct exec nixos-rebuild switch
+  └─ pct exec deploy.sh     # Step 2: Clone repo + apply config
+      └─ git clone
+      └─ nixos-rebuild switch (host-specific)
+```
+
+For subsequent updates on an already-deployed container:
+```bash
+ssh <hostname>
+sudo /usr/local/bin/deploy-nixos
\ No newline at end of file
diff --git a/scripts/create-lxc-nixos.sh b/scripts/create-lxc-nixos.sh
new file mode 100755
index 0000000..8b95a85
--- /dev/null
+++ b/scripts/create-lxc-nixos.sh
@@ -0,0 +1,325 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# --- Dependencies ---
+# Check if docopts is installed (for Bash)
+if ! command -v docopts &> /dev/null; then
+  echo "❌ Error: 'docopts' is required for Bash." >&2
+  echo "See https://github.com/docopt/docopts to install it." >&2
+  exit 1
+fi
+
+# --- Usage and Documentation ---
+usage="Create, bootstrap and deploy a NixOS LXC container on a remote Proxmox VE 9 server.
+
+Usage:
+  $0 <short_name> [options]
+  $0 -h|--help
+
+Options:
+  -h, --help                    Show this message.
+  -t, --template TEMPLATE       LXC template (e.g. local:vztmpl/nixos-unstable).
+  -r, --rootfs-size SIZE        Root filesystem size (e.g. 8G).
+  -c, --cores CORES             Number of CPU cores.
+  -m, --memory MEMORY           RAM in MiB.
+  -s, --swap SWAP               Swap in MiB.
+  -p, --password PASSWORD       Root password for the container.
+  -b, --bridge BRIDGE           Network bridge (e.g. vmbr0).
+  -v, --vlan VLAN               VLAN tag (e.g. tag=10).
+  -d, --domain DOMAIN           DNS domain.
+  -u, --unprivileged UNPRIV     Unprivileged container (0 or 1).
+  -i, --ip IP                   Static IPv4 address (e.g. 192.168.1.100/24).
+  --ip6 TOKEN                   IPv6 token for SLAAC (e.g. ::1:2:3:4).
+  -C, --cmode CMODE             Console mode (console or tty). Default: console.
+  -T, --tags TAGS               Tags for the container (optional).
+  -k, --ssh-public-keys KEYS    SSH public keys for the container.
+  --pve-host HOST               Proxmox host (e.g. pve).
+  --pve-user USER               Proxmox user (default: admin).
+  --pve-port PORT               SSH port for Proxmox (default: 22).
+  --pve-ssh-key KEY             SSH key file for authentication.
+  --initial-config FILE         Initial NixOS configuration file to push
+                                [default: ./initial-lxc-configuration.nix].
+  --repo-url URL                Git repository URL for deploy.sh
+                                [default: (none, must be provided)].
+  --branch BRANCH               Git branch for deploy.sh [default: main].
+  --environment ENV             Environment name (production, dev, etc.)
+                                [default: (none, must be provided or set via config)].
+  --skip-deploy                 Skip the post-creation bootstrap (push + nixos-rebuild).
+  --dry-run                     Simulate container creation without execution.
+
+Optional configuration files (loaded in order, later overrides earlier):
+  /etc/nixos-infra/hosts/config
+  \${XDG_CONFIG_HOME}/nixos-infra/hosts/config
+  ./config
+"
+
+# --- Default Parameters (Environment Variables) ---
+# Proxmox Server
+PVE_HOST="${PVE_HOST:-}"
+PVE_USER="${PVE_USER:-admin}"
+PVE_PORT="${PVE_PORT:-22}"
+PVE_SSH_KEY="${PVE_SSH_KEY:-}"
+DRY_RUN="${DRY_RUN:-false}"
+
+# LXC Container
+TEMPLATE="${TEMPLATE:-local:vztmpl/nixos-unstable-amd64-default_20260428}"
+ROOTFS_SIZE="${ROOTFS_SIZE:-8G}"
+CORES="${CORES:-2}"
+MEMORY="${MEMORY:-2048}"
+SWAP="${SWAP:-1024}"
+PASSWORD="${PASSWORD:-changeme}"
+BRIDGE="${BRIDGE:-vmbr0}"
+VLAN="${VLAN:-}"
+DOMAIN="${DOMAIN:-}"
+UNPRIVILEGED="${UNPRIVILEGED:-0}"
+IP="${IP:-}"
+IP6="${IP6:-}"
+CMODE="${CMODE:-console}"
+TAGS="${TAGS:-}"
+SSH_PUBLIC_KEYS="${SSH_PUBLIC_KEYS:-}"
+
+# Bootstrap
+INITIAL_CONFIG="${INITIAL_CONFIG:-./initial-lxc-configuration.nix}"
+REPO_URL="${REPO_URL:-}"
+BRANCH="${BRANCH:-main}"
+SKIP_DEPLOY="${SKIP_DEPLOY:-false}"
+ENVIRONMENT="${ENVIRONMENT:-}"
+
+# --- Parse Arguments with docopts (Highest priority) ---
+# set +e is to prevent set -e from eating the error message from docopts.
+# This code is up here to prevent useless error messages to be printed
+# in case the "-h" or "--help" argument is used.
+set +e
+args=$(docopts -h "$usage" : "$@")
+eval "$args"
+set -e
+
+# --- Apply Configuration Files (by increasing priority) ---
+XDG_CONFIG_HOME="${XDG_CONFIG_HOME:-$HOME/.config}"
+CONFIG_FILES=(\
+ "/etc/nixos-infra/hosts/config" \
+ "$XDG_CONFIG_HOME/nixos-infra/hosts/config" \
+ "./config")
+for conffile in ${CONFIG_FILES[*]}; do
+  if [ -f "$conffile" ]; then
+    echo "📄 Applying parameters from $conffile..."
+    set -a
+    source "$conffile"
+    set +a
+  else
+    echo "ℹ️  $conffile not found (optional)."
+  fi
+done
+
+# Override with CLI arguments (have priority over config files)
+PVE_HOST="${pve_host:-$PVE_HOST}"
+PVE_USER="${pve_user:-$PVE_USER}"
+PVE_PORT="${pve_port:-$PVE_PORT}"
+PVE_SSH_KEY="${pve_ssh_key:-$PVE_SSH_KEY}"
+DRY_RUN="${dry_run:-$DRY_RUN}"
+
+TEMPLATE="${template:-$TEMPLATE}"
+ROOTFS_SIZE="${rootfs_size:-$ROOTFS_SIZE}"
+CORES="${cores:-$CORES}"
+MEMORY="${memory:-$MEMORY}"
+SWAP="${swap:-$SWAP}"
+PASSWORD="${password:-$PASSWORD}"
+BRIDGE="${bridge:-$BRIDGE}"
+VLAN="${vlan:-$VLAN}"
+DOMAIN="${domain:-$DOMAIN}"
+UNPRIVILEGED="${unprivileged:-$UNPRIVILEGED}"
+IP="${ip:-$IP}"
+IP6="${ip6:-$IP6}"
+CMODE="${cmode:-$CMODE}"
+TAGS="${tags:-$TAGS}"
+SSH_PUBLIC_KEYS="${ssh_public_keys:-$SSH_PUBLIC_KEYS}"
+
+INITIAL_CONFIG="${initial_config:-$INITIAL_CONFIG}"
+REPO_URL="${repo_url:-$REPO_URL}"
+BRANCH="${branch:-$BRANCH}"
+SKIP_DEPLOY="${skip_deploy:-$SKIP_DEPLOY}"
+ENVIRONMENT="${environment:-$ENVIRONMENT}"
+
+# --- SSH Key Default Logic ---
+if [ "$PVE_SSH_KEY" = "default" ]; then
+  PVE_SSH_KEY="${HOME}/.ssh/id_${PVE_USER}"
+fi
+
+# --- Critical Parameters Validation ---
+mandatory_params=(
+  "TEMPLATE"
+  "ROOTFS_SIZE"
+  "CORES"
+  "MEMORY"
+  "SWAP"
+  "PASSWORD"
+  "BRIDGE"
+  "DOMAIN"
+  "UNPRIVILEGED"
+  "CMODE"
+  "SSH_PUBLIC_KEYS"
+  "PVE_HOST"
+  "PVE_USER"
+  "PVE_PORT"
+)
+missing_params=()
+for param in ${mandatory_params[*]}; do
+  if [ -z "${!param}" ]; then missing_params+=("$param"); fi
+done
+if [ ${#missing_params[@]} -gt 0 ]; then
+  echo "❌ Error: The following necessary parameters are missing: ${missing_params[*]}" >&2
+  echo "❌ Error: Please provide them through a config file or the command line." >&2
+  exit 1
+fi
+
+# Authentication Validation
+if [ ! -f "$PVE_SSH_KEY" ]; then
+  echo "❌ Error: SSH key file '$PVE_SSH_KEY' does not exist." >&2
+  exit 1
+fi
+
+# Validate initial-config.nix exists (unless --skip-deploy)
+if [ "$SKIP_DEPLOY" != "true" ] && [ ! -f "$INITIAL_CONFIG" ]; then
+  echo "❌ Error: Initial NixOS configuration '$INITIAL_CONFIG' not found." >&2
+  echo "   Provide a valid path with --initial-config or use --skip-deploy." >&2
+  exit 1
+fi
+
+# Validate deploy.sh exists (unless --skip-deploy)
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+DEPLOY_SCRIPT="${SCRIPT_DIR}/deploy.sh"
+if [ "$SKIP_DEPLOY" != "true" ] && [ ! -f "$DEPLOY_SCRIPT" ]; then
+  echo "❌ Error: deploy.sh not found at '$DEPLOY_SCRIPT'." >&2
+  echo "   The bootstrap phase requires deploy.sh to be present." >&2
+  exit 1
+fi
+
+# --- SSH Connection to Proxmox Server ---
+run_proxmox() {
+  local ssh_cmd="ssh -p $PVE_PORT"
+  if [ -n "$PVE_SSH_KEY" ] && [ -f "$PVE_SSH_KEY" ]; then
+    ssh_cmd="$ssh_cmd -i $PVE_SSH_KEY "
+  else
+    ssh_cmd="$ssh_cmd -o PreferredAuthentications=password "
+  fi
+  $ssh_cmd "$PVE_USER@$PVE_HOST" "$1"
+}
+
+# --- Network Options Construction ---
+NET_OPTS="name=eth0,bridge=$BRIDGE"
+if [ -n "$VLAN" ]; then
+  NET_OPTS="$NET_OPTS,$VLAN"
+fi
+if [ -n "$IP" ]; then
+  NET_OPTS="$NET_OPTS,ip=$IP"
+fi
+# IPv6: use SLAAC with a token if provided, otherwise DHCP
+if [ -n "$IP6" ]; then
+  NET_OPTS="$NET_OPTS,ip6=auto,token6=${IP6}"
+else
+  NET_OPTS="$NET_OPTS,ip6=dhcp"
+fi
+
+# --- Container Creation ---
+echo "🚀 Creating LXC container $short_name on $PVE_HOST (domain: $DOMAIN)..."
+CREATE_CMD="pct create $ROOTFS_SIZE $TEMPLATE --cores $CORES \
+--memory $MEMORY --swap $SWAP --hostname $short_name.$DOMAIN \
+--password $PASSWORD --unprivileged $UNPRIVILEGED --net0 $NET_OPTS \
+--onboot 0 --cmode $CMODE --ssh-public-keys $SSH_PUBLIC_KEYS"
+if [ -n "$TAGS" ]; then
+  CREATE_CMD="$CREATE_CMD --tags $TAGS"
+fi
+
+# Display the command (with password masked)
+DISPLAY_CMD=$(echo "$CREATE_CMD" |
+  sed "s/--password [^ ]*/--password \*\*\*\*\*/g")
+echo "🔧 Command to execute on $PVE_HOST: $DISPLAY_CMD"
+
+# Execute or simulate
+if [ "$DRY_RUN" = "true" ]; then
+  echo "🧪 Dry run mode:"
+  echo "   - Container creation skipped"
+  echo "   - Bootstrap phase skipped"
+  exit 0
+fi
+
+LXC_ID=$(run_proxmox "$CREATE_CMD" | grep -oP '\d+')
+if [ -z "$LXC_ID" ]; then
+  echo "❌ Error: Failed to create the container." >&2
+  exit 1
+fi
+echo "✅ LXC container $short_name created successfully (ID: $LXC_ID)."
+
+# --- Bootstrap Phase (unless --skip-deploy) ---
+if [ "$SKIP_DEPLOY" = "true" ]; then
+  echo "⏭️  --skip-deploy set. Container created but not bootstrapped."
+  echo "   Start it manually with: pct start $LXC_ID"
+  echo "   Then apply a configuration manually."
+  exit 0
+fi
+
+echo ""
+echo "🚀 Starting bootstrap phase for CT $LXC_ID..."
+
+# 1. Start the container
+echo "▶️  Starting container $LXC_ID..."
+run_proxmox "pct start $LXC_ID" || {
+  echo "❌ Error: Failed to start container $LXC_ID." >&2
+  exit 1
+}
+
+# 2. Wait for the container to be ready (SSH or pct exec available)
+echo "⏳ Waiting for container to be ready..."
+for i in $(seq 1 30); do
+  if run_proxmox "pct exec $LXC_ID -- true" 2>/dev/null; then
+    echo "✅ Container $LXC_ID is ready."
+    break
+  fi
+  if [ "$i" -eq 30 ]; then
+    echo "❌ Error: Container $LXC_ID did not become ready in time." >&2
+    echo "   You can retry bootstrap manually." >&2
+    exit 1
+  fi
+  sleep 2
+done
+
+# 3. Push initial-lxc-configuration.nix
+echo "📄 Pushing initial NixOS configuration..."
+run_proxmox "pct push $LXC_ID '$INITIAL_CONFIG' /etc/nixos/configuration.nix" || {
+  echo "❌ Error: Failed to push initial configuration." >&2
+  exit 1
+}
+
+# 4. Push deploy.sh
+echo "📄 Pushing deploy script..."
+run_proxmox "pct push $LXC_ID '$DEPLOY_SCRIPT' /usr/local/bin/deploy-nixos" || {
+  echo "❌ Error: Failed to push deploy script." >&2
+  exit 1
+}
+run_proxmox "pct exec $LXC_ID -- chmod +x /usr/local/bin/deploy-nixos" || {
+  echo "❌ Error: Failed to make deploy script executable." >&2
+  exit 1
+}
+
+# 5. Apply initial configuration (nixos-rebuild switch)
+echo "⚙️  Applying initial NixOS configuration (this may take a while)..."
+if ! run_proxmox "pct exec $LXC_ID -- nixos-rebuild switch" 2>&1; then
+  echo "⚠️  Warning: Initial nixos-rebuild may have issues." >&2
+  echo "   Check the container manually: pct exec $LXC_ID -- nixos-rebuild switch" >&2
+  # Continue anyway — deploy.sh might still work
+fi
+echo "✅ Initial configuration applied."
+
+# 6. Run deploy.sh to clone the repo and apply the specific configuration
+echo "🌐 Running deploy.sh to clone repo and apply specific configuration..."
+# Pass REPO_URL, BRANCH and ENVIRONMENT as env vars to deploy.sh inside the container
+DEPLOY_CMD="REPO_URL='$REPO_URL' BRANCH='$BRANCH' ENVIRONMENT='$ENVIRONMENT' /usr/local/bin/deploy-nixos"
+if ! run_proxmox "pct exec $LXC_ID -- bash -c '$DEPLOY_CMD'" 2>&1; then
+  echo "⚠️  Warning: deploy.sh encountered issues." >&2
+  echo "   You can retry manually: pct exec $LXC_ID -- /usr/local/bin/deploy-nixos" >&2
+  exit 1
+fi
+
+echo ""
+echo "🎉 Container $short_name (CT $LXC_ID) successfully created and deployed!"
+echo "   Connect with: ssh root@${IP%%/*}  (or use pct exec $LXC_ID)"
\ No newline at end of file
diff --git a/scripts/deploy.sh b/scripts/deploy.sh
new file mode 100644
index 0000000..ef994d8
--- /dev/null
+++ b/scripts/deploy.sh
@@ -0,0 +1,116 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# --- Default values (can be overridden by environment variables) ---
+REPO_URL="${REPO_URL:-}"
+REPO_DIR="${REPO_DIR:-/etc/nixos-infra}"
+BRANCH="${BRANCH:-main}"
+DRY_RUN="${DRY_RUN:-false}"
+
+# --- Usage ---
+usage() {
+  cat <<EOF
+Deploy NixOS configuration from the nixos-infra repository.
+
+Usage:
+  $0 [options]
+
+Options:
+  -u, --repo-url URL      Git repository URL
+                          [default: ${REPO_URL}]
+  -d, --repo-dir DIR      Local directory for the repository
+                          [default: ${REPO_DIR}]
+  -b, --branch BRANCH     Git branch to deploy
+                          [default: ${BRANCH}]
+  -n, --dry-run           Simulate deployment without making changes.
+  -h, --help              Show this help message.
+
+Environment variables:
+  REPO_URL, REPO_DIR, BRANCH, DRY_RUN (same as options above).
+EOF
+  exit 0
+}
+
+# --- Parse arguments ---
+while [[ $# -gt 0 ]]; do
+  case "$1" in
+    -u|--repo-url) REPO_URL="$2"; shift 2 ;;
+    -d|--repo-dir) REPO_DIR="$2"; shift 2 ;;
+    -b|--branch)   BRANCH="$2";   shift 2 ;;
+    -n|--dry-run)  DRY_RUN="true"; shift ;;
+    -h|--help)     usage ;;
+    *) echo "❌ Unknown option: $1" >&2; usage ;;
+  esac
+done
+
+HOSTNAME=$(hostname)
+
+if [ "$(id -u)" -ne 0 ]; then
+  echo "❌ This script must be run as root." >&2
+  exit 1
+fi
+
+# --- Dry run mode ---
+if [ "$DRY_RUN" = "true" ]; then
+  echo "🧪 Dry run mode:"
+  echo "   - Repository URL: $REPO_URL"
+  echo "   - Repository dir: $REPO_DIR"
+  echo "   - Branch: $BRANCH"
+  echo "   - Hostname: $HOSTNAME"
+  echo "   - Expected config: $REPO_DIR/environments/<env>/hosts/servers/$HOSTNAME/configuration.nix"
+  echo ""
+  echo "   Would execute:"
+  echo "     git clone --branch $BRANCH $REPO_URL $REPO_DIR"
+  echo "     nixos-rebuild switch -I nixos-config=...$HOSTNAME/configuration.nix"
+  exit 0
+fi
+
+# --- Clone or update the repository ---
+if [ -d "$REPO_DIR/.git" ]; then
+  echo "🔄 Mise à jour du dépôt dans $REPO_DIR..."
+  cd "$REPO_DIR"
+  git fetch origin
+  git checkout "$BRANCH"
+  git pull origin "$BRANCH"
+else
+  echo "📥 Clonage du dépôt dans $REPO_DIR..."
+  mkdir -p "$REPO_DIR"
+  git clone --branch "$BRANCH" "$REPO_URL" "$REPO_DIR"
+fi
+
+# --- Find the configuration for this machine ---
+ENVIRONMENT="${ENVIRONMENT:-}"
+if [ -z "$ENVIRONMENT" ]; then
+  # Try common environment names
+  for env in production prod staging stage dev development; do
+    if [ -d "$REPO_DIR/environments/$env" ]; then
+      ENVIRONMENT="$env"
+      break
+    fi
+  done
+fi
+
+if [ -z "$ENVIRONMENT" ]; then
+  echo "❌ Error: No environment specified and none detected." >&2
+  echo "   Set ENVIRONMENT environment variable or use --environment flag." >&2
+  exit 1
+fi
+
+CONFIG_PATH="$REPO_DIR/environments/$ENVIRONMENT/hosts/servers/$HOSTNAME/configuration.nix"
+if [ ! -f "$CONFIG_PATH" ]; then
+  CONFIG_PATH="$REPO_DIR/environments/$ENVIRONMENT/hosts/workstations/$HOSTNAME/configuration.nix"
+fi
+
+if [ ! -f "$CONFIG_PATH" ]; then
+  echo "❌ Error : No configuration found for $HOSTNAME in environment '$ENVIRONMENT'" >&2
+  echo "   Checked paths :" >&2
+  echo "     - $REPO_DIR/environments/$ENVIRONMENT/hosts/servers/$HOSTNAME/configuration.nix" >&2
+  echo "     - $REPO_DIR/environments/$ENVIRONMENT/hosts/workstations/$HOSTNAME/configuration.nix" >&2
+  exit 1
+fi
+
+# --- Apply the configuration ---
+echo "🚀 Deploying the configuration for $HOSTNAME..."
+nixos-rebuild switch -I nixos-config="$CONFIG_PATH"
+
+echo "✅ Deployment was successful !"
\ No newline at end of file
diff --git a/scripts/gen-secrets-keys.sh b/scripts/gen-secrets-keys.sh
new file mode 100644
index 0000000..f8a603e
--- /dev/null
+++ b/scripts/gen-secrets-keys.sh
@@ -0,0 +1,78 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# --- gen-secrets-keys.sh ---
+# Generate age public keys from SSH host keys for all known hosts.
+#
+# This script retrieves each host's SSH host key, converts it to an
+# age public key using ssh-to-age, and stores it in
+# secrets/pubkeys/<hostname>.age for use with agenix.
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+PROJECT_DIR="$(cd "$SCRIPT_DIR/.." && pwd)"
+PUBKEYS_DIR="${PROJECT_DIR}/secrets/pubkeys"
+
+# Ensure ssh-to-age is available
+if ! command -v ssh-to-age &> /dev/null; then
+  echo "❌ Error: 'ssh-to-age' is required."
+  echo "   Install it with: nix-shell -p ssh-to-age"
+  exit 1
+fi
+
+mkdir -p "$PUBKEYS_DIR"
+
+echo "🔑 Generating age public keys from SSH host keys..."
+echo "   Output directory: $PUBKEYS_DIR"
+echo ""
+
+# Known hosts (hostname, user@host, ssh port)
+# Add entries as hosts are deployed in the infrastructure
+HOSTS=(
+  # Hypervisors
+  # "pve01:root@pve01.prod.lagraula.fr:22"
+  # "pve02:root@pve02.prod.lagraula.fr:22"
+  # LXC containers (once deployed)
+  # "dns01:root@dns01.lagraula.fr:22"
+  # "gitea01:root@gitea01.lagraula.fr:22"
+  # "vault01:root@vault01.lagraula.fr:22"
+  # "rp01:root@rp01.lagraula.fr:22"
+  # Workstations
+  # "sting:root@sting.lagraula.fr:22"
+)
+
+if [ ${#HOSTS[@]} -eq 0 ]; then
+  echo "⚠️  No hosts configured. Edit the HOSTS array in this script first."
+  echo ""
+  echo "For a single host, you can also run manually:"
+  echo "  ssh-keyscan <host> 2>/dev/null | grep ed25519 | awk '{print \$3}' | ssh-to-age > $PUBKEYS_DIR/<hostname>.age"
+  exit 0
+fi
+
+for entry in "${HOSTS[@]}"; do
+  IFS=':' read -r hostname ssh_user_port <<< "$entry"
+  IFS='@' read -r ssh_user ssh_host <<< "$ssh_user_port"
+
+  echo "🖥️  Processing $hostname ($ssh_user@$ssh_host)..."
+  
+  age_key=$(ssh-keyscan -t ed25519 "$ssh_host" 2>/dev/null | \
+    grep "ed25519" | \
+    awk '{print $3}' | \
+    ssh-to-age 2>/dev/null || true)
+
+  if [ -z "$age_key" ]; then
+    echo "   ⚠️  Could not retrieve age key for $hostname. Skipping."
+    continue
+  fi
+
+  echo "$age_key" > "$PUBKEYS_DIR/$hostname.age"
+  echo "   ✅ Saved age public key: $age_key"
+done
+
+echo ""
+echo "🎉 Done! Generated $(ls -1 "$PUBKEYS_DIR"/*.age 2>/dev/null | wc -l) key(s)."
+echo ""
+echo "To encrypt a secret for specific hosts:"
+echo "  age -r \$(cat $PUBKEYS_DIR/<hostname>.age) -o secrets/<name>.age"
+echo ""
+echo "Or with agenix:"
+echo "  agenix -e secrets/<name>.age"
\ No newline at end of file
diff --git a/scripts/initial-lxc-configuration.nix b/scripts/initial-lxc-configuration.nix
new file mode 100644
index 0000000..82ce6af
--- /dev/null
+++ b/scripts/initial-lxc-configuration.nix
@@ -0,0 +1,27 @@
+{ config, pkgs, ... }:
+
+{
+  # Install Git, curl, and other required tools
+  environment.systemPackages = with pkgs; [ git curl ];
+
+  # Enable SSH for initial deployment
+  services.openssh = {
+    enable = true;
+    permitRootLogin = "yes";
+    passwordAuthentication = true;
+  };
+
+  # Clone the repository so deploy.sh can use it
+  system.activationScripts.setup-deploy = ''
+    #!${pkgs.bash}/bin/bash
+    set -euo pipefail
+
+    # Create the target directory
+    mkdir -p /etc/nixos-infra
+
+    # The deploy script has already been pushed to /usr/local/bin/deploy-nixos
+    # by create-lxc-nixos.sh; it will clone the repo and apply the config.
+  '';
+
+  system.stateVersion = "25.11";
+}
\ No newline at end of file
diff --git a/scripts/update-nixpkgs.sh b/scripts/update-nixpkgs.sh
new file mode 100755
index 0000000..e0c6081
--- /dev/null
+++ b/scripts/update-nixpkgs.sh
@@ -0,0 +1,27 @@
+#!/bin/bash
+# Met à jour le commit de référence pour Nixpkgs
+
+BRANCH="nixos-25.11"
+REPO="https://github.com/NixOS/nixpkgs"
+JSON_FILE="$(dirname "$0")/../pkgs/nixpkgs.json"
+
+echo "Récupération du dernier commit sur $BRANCH..."
+REV=$(git ls-remote $REPO refs/heads/$BRANCH | cut -f1)
+
+if [ -z "$REV" ]; then
+    echo "Erreur : Impossible de récupérer le commit."
+    exit 1
+fi
+
+echo "Calcul du hash (cela peut prendre un moment)..."
+SHA256=$(nix-prefetch-url --unpack "https://github.com/NixOS/nixpkgs/archive/$REV.tar.gz")
+
+cat <<EOF > "$JSON_FILE"
+{
+  "url": "https://github.com/NixOS/nixpkgs/archive/$REV.tar.gz",
+  "rev": "$REV",
+  "sha256": "$SHA256"
+}
+EOF
+
+echo "Succès ! Nixpkgs est maintenant épinglé au commit : $REV"
\ No newline at end of file