diff --git a/flake.nix b/flake.nix
index 943b84d..46ee8d6 100644
--- a/flake.nix
+++ b/flake.nix
@@ -26,12 +26,21 @@
       agenix,
       ...
     }:
+    let
+      lib = nixpkgs.lib.extend (
+        final: prev:
+        import ./lib {
+          inherit inputs;
+          lib = final;
+        }
+      );
+    in
     flake-parts.lib.mkFlake { inherit inputs; } {
       imports = [ inputs.treefmt-nix.flakeModule ];
 
       systems = [ "x86_64-linux" ];
 
-      flake = with nixpkgs.lib; {
+      flake = with lib.crans.info; {
         nixosConfigurations =
           let
             baseModules = [
@@ -39,72 +48,10 @@
               agenix.nixosModules.default
             ];
           in
-          {
-            apprentix = nixosSystem {
-              specialArgs = inputs;
-              modules = [ ./hosts/vm/apprentix ] ++ baseModules;
-            };
-            
-            collabora = nixosSystem {
-              specialArgs = inputs;
-              modules = [ ./hosts/vm/collabora ] ++ baseModules;
-            };
-
-            jitsi = nixosSystem {
-              specialArgs = inputs;
-              modules = [ ./hosts/vm/jitsi ] ++ baseModules;
-            };
-
-            livre = nixosSystem {
-              specialArgs = inputs;
-              modules = [ ./hosts/vm/livre ] ++ baseModules;
-            };
-            
-            mediakiwi = nixosSystem {
-              specialArgs = inputs;
-              modules = [ ./hosts/vm/mediakiwi ] ++ baseModules;
-            };
-
-            neo = nixosSystem {
-              specialArgs = inputs;
-              modules = [ ./hosts/vm/neo ] ++ baseModules;
-            };
-
-            nextcloud = nixosSystem {
-              specialArgs = inputs;
-              modules = [ ./hosts/vm/nextcloud ] ++ baseModules;
-            };
-
-            periodique = nixosSystem {
-              specialArgs = inputs;
-              modules = [ ./hosts/vm/periodique ] ++ baseModules;
-            };
-
-            redite = nixosSystem {
-              specialArgs = inputs;
-              modules = [ ./hosts/vm/redite ] ++ baseModules;
-            };
-
-            reverseproxy = nixosSystem {
-              specialArgs = inputs;
-              modules = [ ./hosts/vm/reverseproxy ] ++ baseModules;
-            };
-
-            thot = nixosSystem {
-              specialArgs = inputs;
-              modules = [ ./hosts/physiques/thot ] ++ baseModules;
-            };
-
-            two = nixosSystem {
-              specialArgs = inputs;
-              modules = [ ./hosts/vm/two ] ++ baseModules;
-            };
-
-            vaultwarden = nixosSystem {
-              specialArgs = inputs;
-              modules = [ ./hosts/vm/vaultwarden ] ++ baseModules;
-            };
-            cransIso = nixosSystem {
+          (attrsToNixosSystem ./hosts/vm attrs_all_info attrs_vm_info baseModules)
+          // (attrsToNixosSystem ./hosts/physiques attrs_all_info attrs_physique_info baseModules)
+          // {
+            cransIso = lib.nixosSystem {
               system = "x86_64-linux";
               specialArgs = inputs;
               modules = [
diff --git a/hosts/physiques/cameron/info.nix b/hosts/physiques/cameron/info.nix
new file mode 100644
index 0000000..4164a30
--- /dev/null
+++ b/hosts/physiques/cameron/info.nix
@@ -0,0 +1,22 @@
+{
+  name = "cameron";
+  description = "Serveur de stockage adh";
+  id = 2;
+
+  isDebian = true;
+
+  networking = {
+    adm.enable = true;
+    san.enable = true;
+
+    switch = {
+      # todo recheck port
+      salameche = -1;
+    };
+  };
+  
+  ilo = {
+    id = 52;
+    switch.salameche = 16;
+  };
+}
diff --git a/hosts/physiques/cephiroth/info.nix b/hosts/physiques/cephiroth/info.nix
new file mode 100644
index 0000000..e2f7b28
--- /dev/null
+++ b/hosts/physiques/cephiroth/info.nix
@@ -0,0 +1,23 @@
+{
+  name = "cephiroth";
+  description = "Serveur de stockage ceph";
+  id = 3;
+
+  # Sous Nix mais dans une autre branche
+  isDebian = true;
+
+  networking = {
+    adm.enable = true;
+    san.enable = true;
+
+    switch = {
+      carapuce = 12;
+      arceus = 12;
+    };
+  };
+
+  ilo = {
+    id = 53;
+    switch.salameche = 20;
+  };
+}
diff --git a/hosts/physiques/daniel/info.nix b/hosts/physiques/daniel/info.nix
new file mode 100644
index 0000000..71ae326
--- /dev/null
+++ b/hosts/physiques/daniel/info.nix
@@ -0,0 +1,23 @@
+{
+  name = "daniel";
+  description = "PVE adm";
+  id = 12;
+
+  isDebian = true;
+
+  networking = {
+    adm.enable = true;
+    san.enable = true;
+    srv-nat.enable = true;
+
+    switch = {
+      carapuce = 3;
+      arceus = 3;
+    };
+  };
+  
+  ilo = {
+    id = 22;
+    switch.salameche = 4;
+  };
+}
diff --git a/hosts/physiques/ft/info.nix b/hosts/physiques/ft/info.nix
new file mode 100644
index 0000000..35c5a67
--- /dev/null
+++ b/hosts/physiques/ft/info.nix
@@ -0,0 +1,17 @@
+{
+  name = "ft";
+  description = "Serveur de backup du Crans, en SQ39";
+  id = 15;
+
+  isDebian = true;
+
+  networking = {
+    adm.enable = true;
+
+    switch = {
+      carapuce = 13;
+      arceus = 13;
+    };
+  };
+  
+}
diff --git a/hosts/physiques/gulp/info.nix b/hosts/physiques/gulp/info.nix
new file mode 100644
index 0000000..9fbf144
--- /dev/null
+++ b/hosts/physiques/gulp/info.nix
@@ -0,0 +1,22 @@
+{
+  name = "gulp";
+  description = "PVE adh";
+  id = 18;
+
+  isDebian = true;
+
+  networking = {
+    adm.enable = true;
+    adh.enable = true;
+
+    switch = {
+      carapuce = 11;
+      arceus = 11;
+    };
+  };
+  
+  ilo = {
+    id = 28;
+    switch.salameche = 12;
+  };
+}
diff --git a/hosts/physiques/jack/info.nix b/hosts/physiques/jack/info.nix
new file mode 100644
index 0000000..3fbb130
--- /dev/null
+++ b/hosts/physiques/jack/info.nix
@@ -0,0 +1,24 @@
+{
+  name = "jack";
+  description = "PVE adm";
+  id = 13;
+
+  isDebian = true;
+
+  networking = {
+    adm.enable = true;
+    san.enable = true;
+    srv-nat.enable = true;
+
+    switch = {
+      carapuce = 5;
+      arceus = 5;
+    };
+  };
+  
+  ilo = {
+    id = 23;
+    switch.salameche = 6;
+  };
+}
+
diff --git a/hosts/physiques/odlyd/info.nix b/hosts/physiques/odlyd/info.nix
new file mode 100644
index 0000000..90dff8c
--- /dev/null
+++ b/hosts/physiques/odlyd/info.nix
@@ -0,0 +1,21 @@
+{
+  name = "odlyd";
+  description = "PVE adh";
+  id = 16;
+
+  isDebian = true;
+
+  networking = {
+    adm.enable = true;
+    adh.enable = true;
+
+    switch = {
+      # pas branche
+    };
+  };
+  
+  ilo = {
+    id = 26;
+    switch.salameche = 8;
+  };
+}
diff --git a/hosts/physiques/sam/info.nix b/hosts/physiques/sam/info.nix
new file mode 100644
index 0000000..0dd7f9b
--- /dev/null
+++ b/hosts/physiques/sam/info.nix
@@ -0,0 +1,23 @@
+{
+  name = "sam";
+  description = "PVE adm";
+  id = 11;
+
+  isDebian = true;
+
+  networking = {
+    adm.enable = true;
+    san.enable = true;
+    srv-nat.enable = true;
+
+    switch = {
+      carapuce = 1;
+      arceus = 1;
+    };
+  };
+  
+  ilo = {
+    id = 21;
+    switch.salameche = 2;
+  };
+}
diff --git a/hosts/physiques/stitch/info.nix b/hosts/physiques/stitch/info.nix
new file mode 100644
index 0000000..b10b4cc
--- /dev/null
+++ b/hosts/physiques/stitch/info.nix
@@ -0,0 +1,22 @@
+{
+  name = "stitch";
+  description = "PVE adh";
+  id = 17;
+
+  isDebian = true;
+
+  networking = {
+    adm.enable = true;
+    adh.enable = true;
+
+    switch = {
+      carapuce = 9;
+      arceus = 9;
+    };
+  };
+  
+  ilo = {
+    id = 27;
+    switch.salameche = 10;
+  };
+}
diff --git a/hosts/physiques/tealc/info.nix b/hosts/physiques/tealc/info.nix
new file mode 100644
index 0000000..1b8a385
--- /dev/null
+++ b/hosts/physiques/tealc/info.nix
@@ -0,0 +1,22 @@
+{
+  name = "tealc";
+  description = "Serveur de stockage adm";
+  id = 1;
+
+  isDebian = true;
+
+  networking = {
+    adm.enable = true;
+    san.enable = true;
+
+    switch = {
+      carapuce = 10;
+      arceus = 10;
+    };
+  };
+  
+  ilo = {
+    id = 51;
+    switch.salameche = 18;
+  };
+}
diff --git a/hosts/physiques/thot/default.nix b/hosts/physiques/thot/default.nix
index 80d4f99..27f44b4 100644
--- a/hosts/physiques/thot/default.nix
+++ b/hosts/physiques/thot/default.nix
@@ -38,19 +38,5 @@
     restic
   ];
 
-  crans = {
-    enable = true;
-
-    networking.adm.enable = false;
-    resticClient.enable = false;
-
-    services = {
-      resticServer = {
-        enable = true;
-        port = 4242;
-      };
-    };
-  };
-
   system.stateVersion = "24.05";
 }
diff --git a/hosts/physiques/thot/info.nix b/hosts/physiques/thot/info.nix
new file mode 100644
index 0000000..e45b6db
--- /dev/null
+++ b/hosts/physiques/thot/info.nix
@@ -0,0 +1,17 @@
+{
+  name = "thot";
+  description = "Serveur de backup sous nixos utilisant Restic";
+  id = 14;
+  
+  enable = true;
+
+  networking.adm.enable = false;
+  resticClient.enable = false;
+
+  services = {
+    resticServer = {
+      enable = true;
+      port = 4242;
+    };
+  };
+}
diff --git a/hosts/physiques/zamok/info.nix b/hosts/physiques/zamok/info.nix
new file mode 100644
index 0000000..3237c2d
--- /dev/null
+++ b/hosts/physiques/zamok/info.nix
@@ -0,0 +1,23 @@
+{
+  name = "zamok";
+  description = "Serveur de calcul adhérent";
+  id = 31;
+
+  isDebian = true;
+
+  networking = {
+    adm.enable = true;
+    adh.enable = true;
+    san.enable = true;
+
+    switch = {
+      carapuce = 7;
+      arceus = 4;
+    };
+  };
+
+  ilo = {
+    id = 54;
+    switch.salameche = 14;
+  };
+}
diff --git a/hosts/vm/apprentix/default.nix b/hosts/vm/apprentix/default.nix
index 4e67e57..1525c72 100644
--- a/hosts/vm/apprentix/default.nix
+++ b/hosts/vm/apprentix/default.nix
@@ -9,21 +9,6 @@
 
   networking.hostName = "apprentix";
 
-  crans = {
-    enable = true;
-
-    networking = {
-      id = 150;
-      srvNat.enable = true;
-    };
-
-    resticClient.when = "01:23";
-
-    homeNounou.enable = false;
-
-    users.root.passwordFile = ../../../secrets/apprentix/root.age;
-  };
-
   security.sudo.extraRules = [
     {
       groups = [ "_user" ];
diff --git a/hosts/vm/apprentix/info.nix b/hosts/vm/apprentix/info.nix
new file mode 100644
index 0000000..f569b99
--- /dev/null
+++ b/hosts/vm/apprentix/info.nix
@@ -0,0 +1,17 @@
+{
+  name = "apprentix";
+  description = "VM pour les apprenti⋅es";
+  id = 150;
+
+  enable = true;
+
+  networking = {
+    srv-nat.enable = true;
+  };
+
+  resticClient.when = "01:23";
+
+  homeNounou.enable = false;
+
+  users.root.passwordFile = ../../../secrets/apprentix/root.age;
+}
diff --git a/hosts/vm/collabora/default.nix b/hosts/vm/collabora/default.nix
index 46fbc66..4d0a67f 100644
--- a/hosts/vm/collabora/default.nix
+++ b/hosts/vm/collabora/default.nix
@@ -9,16 +9,5 @@
   networking.hostName = "collabora";
   boot.loader.grub.devices = [ "/dev/sda" ];
 
-  crans = {
-    enable = true;
-
-    networking = {
-      id = 149;
-      srvNat.enable = true;
-    };
-
-    resticClient.enable = false;
-  };
-
   system.stateVersion = "25.09";
 }
diff --git a/hosts/vm/collabora/info.nix b/hosts/vm/collabora/info.nix
new file mode 100644
index 0000000..c68b81f
--- /dev/null
+++ b/hosts/vm/collabora/info.nix
@@ -0,0 +1,13 @@
+{
+  name = "collabora";
+  description = "Collabora du Crans";
+  id = 149;
+
+  enable = true;
+
+  networking = {
+    srv-nat.enable = true;
+  };
+
+  resticClient.enable = false;
+}
diff --git a/hosts/vm/jitsi/default.nix b/hosts/vm/jitsi/default.nix
index 518a948..120bd48 100644
--- a/hosts/vm/jitsi/default.nix
+++ b/hosts/vm/jitsi/default.nix
@@ -9,23 +9,5 @@
   networking.hostName = "jitsi";
   boot.loader.grub.devices = [ "/dev/vda" ];
 
-  crans = {
-    enable = true;
-
-    networking = {
-      id = 163;
-      srv = {
-        enable = true;
-        ipv4 = "185.230.79.15";
-      };
-    };
-
-    resticClient.when = "02:34";
-
-    services = {
-      acme.enable = true;
-    };
-  };
-
   system.stateVersion = "24.11";
 }
diff --git a/hosts/vm/jitsi/info.nix b/hosts/vm/jitsi/info.nix
new file mode 100644
index 0000000..f070613
--- /dev/null
+++ b/hosts/vm/jitsi/info.nix
@@ -0,0 +1,25 @@
+{
+  name = "jitsi";
+  description = "Machine qui gère Jitsi";
+  id = 163;
+
+  enable = true;
+
+  networking = {
+    adm.enable = true;
+    srv = {
+      enable = true;
+      ipv4 = "185.230.79.15";
+    };
+  };
+
+  resticClient.when = "02:34";
+
+  services = {
+    acme.enable = true;
+  };
+
+
+  public-ssh = "";
+
+}
diff --git a/hosts/vm/livre/default.nix b/hosts/vm/livre/default.nix
index 9b669a9..1a76e79 100644
--- a/hosts/vm/livre/default.nix
+++ b/hosts/vm/livre/default.nix
@@ -9,16 +9,5 @@
   networking.hostName = "livre";
   boot.loader.grub.devices = [ "/dev/sda" ];
 
-  crans = {
-    enable = true;
-
-    networking = {
-      id = 140;
-      srvNat.enable = true;
-    };
-
-    resticClient.when = "03:45";
-  };
-
   system.stateVersion = "24.11";
 }
diff --git a/hosts/vm/livre/info.nix b/hosts/vm/livre/info.nix
new file mode 100644
index 0000000..1632dd6
--- /dev/null
+++ b/hosts/vm/livre/info.nix
@@ -0,0 +1,13 @@
+{
+  name = "livre";
+  description = "Editeur de PDF en ligne via Stirling-PDF";
+  id = 140;
+
+  enable = true;
+
+  networking = {
+    srv-nat.enable = true;
+  };
+
+  resticClient.when = "03:45";
+}
diff --git a/hosts/vm/mediakiwi/default.nix b/hosts/vm/mediakiwi/default.nix
index e4a80a0..b0f5484 100644
--- a/hosts/vm/mediakiwi/default.nix
+++ b/hosts/vm/mediakiwi/default.nix
@@ -12,17 +12,5 @@
   networking.hostName = "mediakiwi";
   boot.loader.grub.devices = [ "/dev/sda" ];
 
-  crans = {
-    enable = true;
-
-    networking = {
-      id = 144;
-      srvNat.enable = true;
-    };
-
-    # Enable when deploying the real mediakiwi
-    resticClient.when = "06:47";
-  };
-
   system.stateVersion = "25.05";
 }
diff --git a/hosts/vm/mediakiwi/info.nix b/hosts/vm/mediakiwi/info.nix
new file mode 100644
index 0000000..3097f89
--- /dev/null
+++ b/hosts/vm/mediakiwi/info.nix
@@ -0,0 +1,13 @@
+{
+  name = "mediakiwi";
+  description = "Wiki du Crans";
+  id = 144;
+
+  enable = true;
+
+  networking = {
+    srv-nat.enable = true;
+  };
+
+  resticClient.when = "06:47";
+}
diff --git a/hosts/vm/neo/default.nix b/hosts/vm/neo/default.nix
index f2f99ae..c5aaf5f 100644
--- a/hosts/vm/neo/default.nix
+++ b/hosts/vm/neo/default.nix
@@ -12,24 +12,5 @@
 
   networking.hostName = "neo";
 
-  crans = {
-    enable = true;
-
-    networking = {
-      id = 141;
-      srv = {
-        enable = true;
-        ipv4 = "185.230.79.5";
-      };
-    };
-
-    resticClient.when = "04:56";
-
-    services = {
-      acme.enable = true;
-      coturn.enable = true;
-    };
-  };
-
   system.stateVersion = "24.11";
 }
diff --git a/hosts/vm/neo/info.nix b/hosts/vm/neo/info.nix
new file mode 100644
index 0000000..ad068b7
--- /dev/null
+++ b/hosts/vm/neo/info.nix
@@ -0,0 +1,21 @@
+{
+  name = "neo";
+  description = "Matrix du Crans et bridge IRC/Matrix";
+  id = 141;
+
+  enable = true;
+
+  networking = {
+    srv = {
+      enable = true;
+      ipv4 = "185.230.79.5";
+    };
+  };
+
+  resticClient.when = "04:56";
+
+  services = {
+    acme.enable = true;
+    coturn.enable = true;
+  };
+}
diff --git a/hosts/vm/nextcloud/default.nix b/hosts/vm/nextcloud/default.nix
index 5f9a1fa..7cc4a55 100644
--- a/hosts/vm/nextcloud/default.nix
+++ b/hosts/vm/nextcloud/default.nix
@@ -9,31 +9,11 @@
   networking.hostName = "nextcloud";
   boot.loader.grub.devices = [ "/dev/sda" ];
 
-  crans = {
-    enable = true;
-    networking = {
-      id = 146;
-      srvNat = {
-        enable = true;
-        interface = "ens20";
-      };
-      san = {
-        enable = true;
-        interface = "ens19";
-      };
-    };
-
-    homeAdh.enable = true;
-
-    resticClient.enable = false;
-  };
-
   services.autofs =
     let
       autoMaster = pkgs.writeScript "home-nextcloud" ''
         #!/usr/bin/env bash
         USER=$(echo $1 | sed "s/_[1-9]*$//")
-
         UHOME=/home-adh/$USER
 
         USERID=$(ldapsearch -LLL -b "dc=crans,dc=org" -H ldap://172.16.10.157 -D "cn=admin,dc=crans,dc=org" -y ${config.age.secrets.nextcloud_ldap_pass.path} "uid=$USER" uidNumber | grep uidNumber | awk '{print $2}')
diff --git a/hosts/vm/nextcloud/info.nix b/hosts/vm/nextcloud/info.nix
new file mode 100644
index 0000000..598f79a
--- /dev/null
+++ b/hosts/vm/nextcloud/info.nix
@@ -0,0 +1,22 @@
+{
+  name = "nextcloud";
+  description = "Nextcloud du Crans";
+  id = 146;
+
+  enable = true;
+
+  networking = {
+    srv-nat = {
+      enable = true;
+      interface = "ens20";
+    };
+    san = {
+      enable = true;
+      interface = "ens19";
+    };
+  };
+
+  homeAdh.enable = true;
+
+  resticClient.enable = false;
+}
diff --git a/hosts/vm/periodique/default.nix b/hosts/vm/periodique/default.nix
index d66df0b..82cd023 100644
--- a/hosts/vm/periodique/default.nix
+++ b/hosts/vm/periodique/default.nix
@@ -9,16 +9,5 @@
   networking.hostName = "periodique";
   boot.loader.grub.devices = [ "/dev/sda" ];
 
-  crans = {
-    enable = true;
-
-    networking = {
-      id = 118;
-      srvNat.enable = true;
-    };
-
-    resticClient.when = "02:56";
-  };
-
   system.stateVersion = "24.11";
 }
diff --git a/hosts/vm/periodique/info.nix b/hosts/vm/periodique/info.nix
new file mode 100644
index 0000000..489eaff
--- /dev/null
+++ b/hosts/vm/periodique/info.nix
@@ -0,0 +1,13 @@
+{
+  name = "periodique";
+  description = "Frontend Matrix du Crans (element)";
+  id = 118;
+
+  enable = true;
+
+  networking = {
+    srv-nat.enable = true;
+  };
+
+  resticClient.when = "02:56";
+}
diff --git a/hosts/vm/redite/default.nix b/hosts/vm/redite/default.nix
index 45dea89..e80b4e7 100644
--- a/hosts/vm/redite/default.nix
+++ b/hosts/vm/redite/default.nix
@@ -9,16 +9,5 @@
   networking.hostName = "redite";
   boot.loader.grub.devices = [ "/dev/sda" ];
 
-  crans = {
-    enable = true;
-
-    networking = {
-      id = 139;
-      srvNat.enable = true;
-    };
-
-    resticClient.when = "06:18";
-  };
-
   system.stateVersion = "23.11";
 }
diff --git a/hosts/vm/redite/info.nix b/hosts/vm/redite/info.nix
new file mode 100644
index 0000000..74298d9
--- /dev/null
+++ b/hosts/vm/redite/info.nix
@@ -0,0 +1,13 @@
+{
+  name = "redite";
+  description = "Frontend reddit libre";
+  id = 139;
+
+  enable = true;
+
+  networking = {
+    srv-nat.enable = true;
+  };
+
+  resticClient.when = "06:18";
+}
diff --git a/hosts/vm/reverseproxy/default.nix b/hosts/vm/reverseproxy/default.nix
index 4c56498..c4e0f27 100644
--- a/hosts/vm/reverseproxy/default.nix
+++ b/hosts/vm/reverseproxy/default.nix
@@ -13,22 +13,5 @@
   users.users."nginx".home = "/var/lib/nginx";
   users.users."anubis".extraGroups = [ "nginx" ];
 
-  crans = {
-    enable = true;
-
-    networking = {
-      id = 151;
-      srvNat.enable = true;
-      srv = {
-        enable = true;
-        interface = "ens20";
-        ipv4 = "185.230.79.42";
-      };
-    };
-
-    resticClient.when = "03:42";
-
-  };
-
   system.stateVersion = "25.05";
 }
diff --git a/hosts/vm/reverseproxy/info.nix b/hosts/vm/reverseproxy/info.nix
new file mode 100644
index 0000000..e2bcf3f
--- /dev/null
+++ b/hosts/vm/reverseproxy/info.nix
@@ -0,0 +1,19 @@
+{
+  name = "reverseproxy";
+  description = "reverse-proxy principale du Crans";
+  id = 151;
+
+  enable = true;
+
+  networking = {
+    srv-nat.enable = true;
+    srv = {
+      enable = true;
+      interface = "ens20";
+      ipv4 = "185.230.79.42";
+    };
+  };
+
+  resticClient.when = "03:42";
+
+}
diff --git a/hosts/vm/reverseproxy/reverseproxy.nix b/hosts/vm/reverseproxy/reverseproxy.nix
index f0d5b78..8301373 100644
--- a/hosts/vm/reverseproxy/reverseproxy.nix
+++ b/hosts/vm/reverseproxy/reverseproxy.nix
@@ -8,6 +8,8 @@ let
   formatJSON = pkgs.formats.json { };
   formatYAML = pkgs.formats.yaml { };
 
+  inherit (lib.crans) fetchFromCrans;
+
   antiBot = formatYAML.generate "antibot.yaml" [
     {
       name = "whitelist-crans";
@@ -160,16 +162,6 @@ let
     ];
   };
 
-  fetchFromCrans =
-    opts:
-    pkgs.fetchFromGitLab (
-      {
-        domain = "gitlab.adm.crans.org";
-        owner = "nounous";
-      }
-      // opts
-    );
-
   installPartySite = pkgs.python3Packages.buildPythonApplication {
     name = "site-install-party";
     pyproject = false;
diff --git a/hosts/vm/two/default.nix b/hosts/vm/two/default.nix
index a87ebcd..0a71c71 100644
--- a/hosts/vm/two/default.nix
+++ b/hosts/vm/two/default.nix
@@ -8,19 +8,6 @@
   networking.hostName = "two";
   boot.loader.grub.devices = [ "/dev/sda" ];
 
-  crans = {
-    enable = true;
-
-    networking = {
-      id = 135;
-      srvNat = {
-        enable = true;
-        interface = "ens19";
-      };
-    };
-
-    resticClient.when = "07:29";
-  };
 
   system.stateVersion = "23.11";
 }
diff --git a/hosts/vm/two/info.nix b/hosts/vm/two/info.nix
new file mode 100644
index 0000000..c345d86
--- /dev/null
+++ b/hosts/vm/two/info.nix
@@ -0,0 +1,16 @@
+{
+  name = "two";
+  description = "VM de test";
+  id = 135;
+
+  enable = true;
+
+  networking = {
+    srv-nat = {
+      enable = true;
+      interface = "ens19";
+    };
+  };
+
+  resticClient.when = "07:29";
+}
diff --git a/hosts/vm/vaultwarden/default.nix b/hosts/vm/vaultwarden/default.nix
index 523b73d..d98caf8 100644
--- a/hosts/vm/vaultwarden/default.nix
+++ b/hosts/vm/vaultwarden/default.nix
@@ -9,16 +9,5 @@
   networking.hostName = "vaultwarden";
   boot.loader.grub.devices = [ "/dev/sda" ];
 
-  crans = {
-    enable = true;
-
-    networking = {
-      id = 159;
-      srvNat.enable = true;
-    };
-
-    resticClient.when = "04:44";
-  };
-
   system.stateVersion = "24.05";
 }
diff --git a/hosts/vm/vaultwarden/info.nix b/hosts/vm/vaultwarden/info.nix
new file mode 100644
index 0000000..1cf8489
--- /dev/null
+++ b/hosts/vm/vaultwarden/info.nix
@@ -0,0 +1,13 @@
+{
+  name = "vaultwarden";
+  description = "Vaultarden du crans, gestionnaire de mot de passe";
+  id = 159;
+
+  enable = true;
+
+  networking = {
+    srv-nat.enable = true;
+  };
+
+  resticClient.when = "04:44";
+}
diff --git a/lib/default.nix b/lib/default.nix
new file mode 100644
index 0000000..e3ffe47
--- /dev/null
+++ b/lib/default.nix
@@ -0,0 +1,19 @@
+args@{ inputs, ... }:
+let
+  pkgs = inputs.nixpkgs.legacyPackages.x86_64-linux;
+in
+{
+  crans = {
+    info = import ./info.nix args;
+
+    fetchFromCrans =
+      opts:
+      pkgs.fetchFromGitLab (
+        {
+          domain = "gitlab.adm.crans.org";
+          owner = "nounous";
+        }
+        // opts
+      );
+  };
+}
diff --git a/lib/info.nix b/lib/info.nix
new file mode 100644
index 0000000..b689add
--- /dev/null
+++ b/lib/info.nix
@@ -0,0 +1,82 @@
+{ lib, inputs, ... }:
+
+let
+  inherit (lib)
+    attrNames
+    attrsToList
+    isInt
+    isString
+    join
+    length
+    listToAttrs
+    filter
+    filterAttrs
+    mapAttrs
+    nameValuePair
+    nixosSystem
+    readDir
+    warn
+    warnIf
+    warnIfNot
+    ;
+  infoRequired = {
+    name = isString;
+    description = isString;
+    id = isInt;
+  };
+  verifyAttrs =
+    info:
+    let
+      missing = filter (n: !(info ? ${n})) (attrNames infoRequired);
+      wrongType = filter (n: info ? ${n.name} && !(n.value info.${n.name})) (attrsToList infoRequired);
+    in
+    (warnIf (
+      length missing > 0
+    ) "${info.name}/info.nix : les attributs « ${join ", " missing} » sont manquants")
+      (warnIf (length wrongType > 0)
+        "${info.name}/info.nix : les attributs « ${join ", " (map (i: i.name) wrongType)} » sont mal typés"
+      )
+      (warnIfNot (
+        (info.isDebian or false) || info ? enable
+      ) "${info.name}/info.nix : cette machine nix ne définit pas l’attribut enable")
+      info;
+
+  get_hosts_names = path: attrNames (filterAttrs (name: type: type == "directory") (readDir path));
+  get_info =
+    path:
+    filter (x: x != null) (
+      map (
+        name:
+        let
+          filePath = path + "/${name}/info.nix";
+        in
+        if builtins.pathExists filePath then
+          verifyAttrs (import filePath)
+        else
+          warn "${toString filePath} not found" null
+      ) (get_hosts_names path)
+    );
+
+  listInfoToAttrs = infos: add: listToAttrs (map (info: nameValuePair info.name (info // add)) infos);
+in
+rec {
+  attrsToNixosSystem =
+    path: all_hosts: hosts: baseModules:
+    mapAttrs (
+      name: info:
+      nixosSystem {
+        specialArgs = inputs // {
+          hosts = all_hosts;
+        };
+        modules = [
+          (path + "/${name}")
+          ({ ... }: { config.crans = info; })
+        ]
+        ++ baseModules;
+      }
+    ) (filterAttrs (name: info: !(info.isDebian or false)) hosts);
+
+  attrs_vm_info = listInfoToAttrs (get_info ../hosts/vm) { isVm = true; };
+  attrs_physique_info = listInfoToAttrs (get_info ../hosts/physiques) { isVm = false; };
+  attrs_all_info = attrs_physique_info // attrs_vm_info;
+}
diff --git a/modules/crans/default.nix b/modules/crans/default.nix
index cf9f2ea..4f28495 100644
--- a/modules/crans/default.nix
+++ b/modules/crans/default.nix
@@ -3,7 +3,13 @@
 let
   cfg = config.crans;
 
-  inherit (lib) mkEnableOption mkIf;
+  inherit (lib)
+    mkEnableOption
+    mkOption
+    mkIf
+    types
+    optional
+    ;
 in
 {
   imports = [
@@ -20,11 +26,51 @@ in
     ./ssh.nix
     ./store.nix
     ./users.nix
+    ./vlans.nix
     ./virtualisation.nix
   ];
 
   options.crans = {
     enable = mkEnableOption "Configuration commune à toutes les machines du Crans";
+
+    name = mkOption {
+      type = types.str;
+      example = "vm-test";
+      description = "Nom de la machine";
+    };
+
+    isVm = mkOption {
+      type = types.bool;
+      description = "Est-ce une machine virtuelle ?";
+    };
+
+    isDebian = mkOption {
+      type = types.bool;
+      default = false;
+      example = "true";
+      description = "Est-ce une machine Debian ?";
+    };
+
+    description = mkOption {
+      type = types.str;
+      example = "VM de test";
+      description = "Description de la machine";
+    };
+
+    id = mkOption {
+      type = types.int;
+      example = 135;
+      description = ''
+        ID de la machine :
+        - < 100 machine physique
+        - >= 100 VM ( id de la VM dans proxmox )
+      '';
+    };
+
+    public-ssh = mkOption {
+      type = types.str;
+      description = "Clé ssh public de la machine";
+    };
   };
 
   config = mkIf cfg.enable {
@@ -32,7 +78,7 @@ in
       homeNounou.enable = lib.mkDefault true;
       monitoring.enable = true;
       networking = {
-        enable = true;
+        enable = lib.mkDefault true;
         adm.enable = lib.mkDefault true;
       };
       resticClient.enable = lib.mkDefault true;
@@ -40,5 +86,11 @@ in
         ldap.enable = true;
       };
     };
+
+    warnings = (
+      optional (
+        cfg.isVm != (cfg.id >= 100)
+      ) "${cfg.name}: isVm (${toString cfg.isVm}) est incohérent avec son id (${toString cfg.id})"
+    );
   };
 }
diff --git a/modules/crans/networking.nix b/modules/crans/networking.nix
index 60ac51e..99e20b1 100644
--- a/modules/crans/networking.nix
+++ b/modules/crans/networking.nix
@@ -1,207 +1,126 @@
-{ lib, config, ... }:
+{
+  lib,
+  config,
+  hosts,
+  ...
+}:
 
 let
-  cfg = config.crans.networking;
+  cfg = config.crans;
+  cfg-net = cfg.networking;
 
   inherit (lib)
     mkEnableOption
     mkIf
     mkOption
+    mkDefault
     types
+    mod
+    mapAttrs
+    mapAttrs'
+    filterAttrs
+    mergeAttrsList
+    optional
+    fixedWidthString
+    nameValuePair
     ;
-
-  idString = toString cfg.id;
-  hostId = lib.mod cfg.id 100;
-  hostIdString = lib.fixedWidthString 2 "0" (toString hostId);
-  isVm = cfg.id >= 100;
-  isVmString = toString isVm;
 in
 {
   options.crans.networking = {
     enable = mkEnableOption "Configuration réseaux commune à toutes les machines du Crans.";
+  }
+  // mapAttrs (
+    vlan: conf:
+    let
+      vlanId = mod conf.id 100;
+    in
+    mergeAttrsList (
+      [
+        {
+          enable = mkEnableOption "Activation du réseau ${vlan}";
 
-    id = mkOption {
-      type = types.int;
-      example = 135;
-      description = "Le numéro de la VM dans Proxmox.";
-    };
+          interface = mkOption {
+            type = types.str;
+            description = "Interface pour le réseau ${vlan}";
+            default = conf.interface;
+          };
 
-    adm = {
-      enable = mkEnableOption "Configuration du VLAN adm.";
+          defaultRoutes = mkOption {
+            type = types.bool;
+            default = true;
+            description = "Configuration par défaut des routes de ${vlan}";
+          };
+        }
+      ]
+      ++ optional ((conf.ipv4 or true) != null) {
+        ipv4 = mkOption {
+          type = types.str;
+          description = "Adresse IPv4 de la machine sur le réseau ${vlan}";
+          default = "172.16.${toString vlanId}.${toString cfg.id}";
+        };
+      }
+      ++ optional ((conf.ipv6 or true) != null) (
+        let
+          # XXX: Utilisation du masque pour le déterminer à la place ?
+          prefix =
+            if lib.hasPrefix "2a0c:700" conf.ipv6.address then
+              "2a0c:700"
+            else if lib.hasPrefix "fd00:0:0" conf.ipv6.address then
+              "fd00:0:0"
+            else
+              (builtins.warn "Le prefixe de ${conf.ipv6.address} n’est pas reconnu");
+        in
+        {
+          ipv6 = mkOption {
+            type = types.str;
+            description = "Adresse IPv6 de la machine sur le réseau ${vlan}";
+            default = "${prefix}:${toString vlanId}::ff:fe0${toString (cfg.id / 100)}:${toString (mod cfg.id 100)}${
+              fixedWidthString 2 "0" (toString vlanId)
+            }";
+          };
+        }
+      )
+    )
+  ) cfg.vlans;
 
-      interface = mkOption {
-        type = types.str;
-        default = "ens18";
-        example = "ens20";
-        description = "Nom de l'interface réseau sur laquelle est située le VLAN adm.";
-      };
-    };
-
-    srv = {
-      enable = mkEnableOption "Configuration du VLAN srv.";
-
-      interface = mkOption {
-        type = types.str;
-        default = "ens19";
-        example = "ens20";
-        description = "Nom de l'interface réseau sur laquelle est située le VLAN srv.";
-      };
-
-      ipv4 = mkOption {
-        type = types.str;
-        example = "185.230.79.1";
-        description = "Adresse IPv4 de la machine.";
-      };
-    };
-
-    srvNat = {
-      enable = mkEnableOption "Configuration du VLAN srv-nat.";
-
-      interface = mkOption {
-        type = types.str;
-        default = "ens19";
-        example = "ens20";
-        description = "Nom de l'interface réseau sur laquelle est située le VLAN srv-nat.";
-      };
-    };
-
-    san = {
-      enable = mkEnableOption "Configuration du VLAN san.";
-
-      interface = mkOption {
-        type = types.str;
-        example = "ens19";
-        description = "Nom de l'interface réseau sur laquelle est située le VLAN san.";
-      };
-    };
-  };
-
-  config = mkIf cfg.enable {
+  config = mkIf cfg-net.enable {
     networking = {
+      hostName = cfg.name;
       useDHCP = false;
-      firewall.enable = lib.mkDefault false;
-      nameservers = [ "172.16.10.128" ];
+      firewall.enable = mkDefault false;
+      nameservers = [
+        # Romanesco via adm
+        "172.16.10.128"
+        "fd00::10:0:ff:fe01:2810"
+      ];
 
-      # La configuration des interfaces se fait de la manière suivante :
-      # elle est écrite de manière générique pour toutes les machines, puis
-      # on filtre pour ne garder que les interfaces activées. nix fait de
-      # l'évaluation paresseuse donc ça fonctionne bien !
-      interfaces =
-        # On change le nom des interfaces de "adm", "srv", ... pour leur vrai
-        # nom (on ne le met pas directement pour faire fonctionner le filter
-        # plus bas).
-        lib.attrsets.mapAttrs'
-          (interface: conf: {
-            name = cfg."${interface}".interface;
-            value = conf;
-          })
-          (
-            # On filtre sur les interfaces activées
-            lib.attrsets.filterAttrs (interface: _: cfg."${interface}".enable) {
-              # Configuration du VLAN adm
-              adm = {
-                ipv4.addresses = [
+      interfaces = mapAttrs' (
+        vlan: vconf:
+        let
+          conf = cfg-net.${vlan};
+        in
+        nameValuePair conf.interface (
+          # On itère ipv4 / ipv6
+          builtins.mapAttrs
+            (
+              ipvx: _:
+              mkIf (vconf.${ipvx} != null) {
+                addresses = [
                   {
-                    address = "172.16.10.${idString}";
-                    prefixLength = 24;
+                    address = conf.${ipvx};
+                    prefixLength = vconf.${ipvx}.prefixLength;
                   }
                 ];
 
-                ipv6.addresses = [
-                  {
-                    address = "fd00::10:0:ff:fe0${isVmString}:${hostIdString}10";
-                    prefixLength = 64;
-                  }
-                ];
-              };
-
-              # Configuration du VLAN srv
-              srv = {
-                ipv4 = {
-                  addresses = [
-                    {
-                      address = cfg.srv.ipv4;
-                      prefixLength = 26;
-                    }
-                  ];
-                  routes = [
-                    {
-                      address = "0.0.0.0";
-                      via = "185.230.79.62";
-                      prefixLength = 0;
-                    }
-                  ];
-                };
-                ipv6 = {
-                  addresses = [
-                    {
-                      address = "2a0c:700:2::ff:fe0${isVmString}:${hostIdString}02";
-                      prefixLength = 64;
-                    }
-                  ];
-                  routes = [
-                    {
-                      address = "::";
-                      via = "2a0c:700:2::ff:fe00:9902";
-                      prefixLength = 0;
-                    }
-                  ];
-                };
-              };
-
-              # Configuration du VLAN srv-nat
-              srvNat = {
-                ipv4 = {
-                  addresses = [
-                    {
-                      address = "172.16.3.${idString}";
-                      prefixLength = 24;
-                    }
-                  ];
-                  routes = [
-                    {
-                      address = "0.0.0.0";
-                      via = "172.16.3.99";
-                      prefixLength = 0;
-                    }
-                  ];
-                };
-
-                ipv6 = {
-                  addresses = [
-                    {
-                      address = "2a0c:700:3::ff:fe0${isVmString}:${hostIdString}03";
-                      prefixLength = 64;
-                    }
-                  ];
-                  routes = [
-                    {
-                      address = "::";
-                      via = "2a0c:700:3::ff:fe00:9903";
-                      prefixLength = 0;
-                    }
-                  ];
-                };
-              };
-
-              # Configuration du VLAN san
-              san = {
-                ipv4.addresses = [
-                  {
-                    address = "172.16.4.${idString}";
-                    prefixLength = 24;
-                  }
-                ];
-
-                ipv6.addresses = [
-                  {
-                    address = "fd00::4:0:ff:fe0${isVmString}:${hostIdString}04";
-                    prefixLength = 64;
-                  }
-                ];
-              };
+                routes = mkIf conf.defaultRoutes vconf.${ipvx}.routes;
+              }
+            )
+            {
+              "ipv4" = null;
+              "ipv6" = null;
             }
-          );
+        )
+      ) (filterAttrs (n: _: cfg-net.${n}.enable) cfg.vlans); # On filtre les interfaces désactivées.
     };
   };
 }
diff --git a/modules/crans/vlans.nix b/modules/crans/vlans.nix
new file mode 100644
index 0000000..c535aa8
--- /dev/null
+++ b/modules/crans/vlans.nix
@@ -0,0 +1,230 @@
+{ lib, ... }:
+let
+  inherit (lib)
+    mkOption
+    types
+    mkDefault
+    mkForce
+    ;
+
+  vlanConf = {
+
+    srv = {
+      id = 2;
+      description = "Réseau public";
+      interface = "ens19";
+      ipv4 = {
+        address = mkForce "185.230.79.0";
+        prefixLength = 26;
+        routes = [
+          {
+            address = "0.0.0.0";
+            via = "185.230.79.62";
+            prefixLength = 0;
+          }
+        ];
+      };
+      ipv6 = {
+        address = mkForce "2a0c:700:10::";
+        routes = [
+          {
+            address = "::";
+            via = "2a0c:700:2::ff:fe00:9902";
+            prefixLength = 0;
+          }
+        ];
+      };
+    };
+
+    srv-nat = {
+      id = 3;
+      description = "Réseau derrière un NAT";
+      interface = "ens19";
+      ipv4.routes = [
+        {
+          address = "0.0.0.0";
+          via = "172.16.3.99";
+          prefixLength = 0;
+        }
+      ];
+      ipv6 = {
+        address = mkForce "2a0c:700:3::";
+        routes = [
+          {
+            address = "::";
+            via = "2a0c:700:3::ff:fe00:9903";
+            prefixLength = 0;
+          }
+        ];
+      };
+    };
+
+    san = {
+      id = 4;
+      description = "Accès aux baies de stockages";
+      interface = "ens19";
+    };
+
+    ceph = {
+      id = 6;
+      description = "Réseau interne à ceph";
+      interface = "ens20";
+    };
+
+    adm = {
+      id = 10;
+      description = "Réseau interne";
+      interface = "ens18";
+    };
+
+    adh = {
+      id = 12;
+      description = "Réseau adhérent";
+      ipv4 = {
+        address = mkForce "185.230.78.0";
+        routes = [
+          {
+            address = "0.0.0.0";
+            via = "185.230.78.12";
+            prefixLength = 0;
+          }
+        ];
+      };
+      ipv6 = {
+        address = mkForce "2a0c:700:12::";
+        prefixLength = 48;
+        routes = [
+          {
+            address = "::";
+            via = "2a0c:700:12::ff:fe00:9912";
+            prefixLength = 0;
+          }
+        ];
+      };
+    };
+
+    adh-adm = {
+      id = 13;
+      description = "Réseau d’administration du réseau adhérent";
+    };
+
+    ens = {
+      id = 2751;
+      description = "Interconnexion avec l’ENS.";
+      ipv4 = {
+        address = mkForce "138.231.136.0";
+        prefixLength = 29;
+      };
+      ipv6 = null;
+    };
+
+    ens-clubs = {
+      id = 2754;
+      description = "Réseau clubs interconnecté avec l’ENS";
+      ipv6 = null;
+    };
+
+    ens-lp = {
+      id = 2756;
+      description = "Réseau imprimante interconnecté avec l’ENS";
+      ipv6 = null;
+    };
+
+  };
+
+  ipOpt =
+    v:
+    let
+      maxPrefix = if v == 4 then 32 else 128;
+    in
+    types.submodule {
+      options = {
+        address = mkOption {
+          type = types.str;
+          description = "Adresses IPv${v} du réseau";
+        };
+
+        prefixLength = mkOption {
+          type = types.ints.between 0 maxPrefix;
+          default = if v == 4 then 24 else 64;
+          description = "Prefixe du réseau";
+        };
+
+        routes = mkOption {
+          default = [ ];
+          description = "Routes par défaut";
+          example = [
+            {
+              address = "0.0.0.0";
+              via = "172.16.3.99";
+              prefixLength = 0;
+            }
+          ];
+          type = types.listOf (
+            types.submodule {
+              options = {
+                address = mkOption { type = types.str; };
+                via = mkOption { type = types.str; };
+                prefixLength = mkOption { type = types.ints.between 0 maxPrefix; };
+              };
+            }
+          );
+        };
+      };
+    };
+in
+{
+  options.crans.vlans = mkOption {
+    type = types.attrsOf (
+      types.submodule {
+        options = {
+          id = mkOption {
+            type = types.int;
+            example = "10";
+            description = "Id du VLAN";
+          };
+
+          description = mkOption {
+            type = types.str;
+            description = "Description du VLAN";
+          };
+
+          interface = mkOption {
+            type = types.nullOr types.str;
+            default = null;
+            example = "ens19";
+            description = "Interface par défaut du VLAN";
+          };
+
+          ipv4 = mkOption {
+            type = types.nullOr (ipOpt 4);
+            description = "Réseau IPv4 du VLAN.";
+          };
+
+          ipv6 = mkOption {
+            type = types.nullOr (ipOpt 6);
+            description = "Réseau IPv6 du VLAN.";
+          };
+        };
+      }
+    );
+  };
+
+  config.crans.vlans = (
+    builtins.mapAttrs (
+      vlan: conf:
+      let
+        vlan = lib.mod conf.id 100;
+      in
+      lib.mkMerge (
+        [ conf ]
+        ++ lib.optional ((conf.ipv4 or true) != null) {
+          ipv4.address = mkDefault "172.16.${toString vlan}.0";
+        }
+        ++ lib.optional ((conf.ipv6 or true) != null) {
+          ipv6.address = mkDefault "fd00:0:0:${toString vlan}::";
+        }
+      )
+    ) vlanConf
+  );
+}