diff --git a/flake.nix b/flake.nix
index 94236a9..f841db5 100644
--- a/flake.nix
+++ b/flake.nix
@@ -45,12 +45,12 @@
               specialArgs = inputs;
               modules = [ ./hosts/vm/apprentix ] ++ baseModules;
             };
-            
+
             belenios = nixosSystem {
               specialArgs = inputs;
               modules = [ ./hosts/vm/belenios ] ++ baseModules ++ additionalPackages;
             };
-            
+
             collabora = nixosSystem {
               specialArgs = inputs;
               modules = [ ./hosts/vm/collabora ] ++ baseModules;
@@ -120,6 +120,8 @@
       perSystem =
         { config, pkgs, ... }:
         {
+          packages = pkgs.callPackage ./pkgs/packages.nix { inherit pkgs; };
+
           devShells = {
             default = pkgs.callPackage ./devshells/default.nix { inherit (inputs) agenix; };
           };
diff --git a/hosts/iso/default.nix b/hosts/iso/default.nix
index 0933dcc..cfcfe1e 100644
--- a/hosts/iso/default.nix
+++ b/hosts/iso/default.nix
@@ -1,4 +1,9 @@
-{ pkgs, lib, modulesPath, ... }:
+{
+  pkgs,
+  lib,
+  modulesPath,
+  ...
+}:
 
 {
   imports = [
@@ -12,14 +17,21 @@
   };
 
   nix = {
-    settings.experimental-features = [ "nix-command" "flakes" ];
+    settings.experimental-features = [
+      "nix-command"
+      "flakes"
+    ];
     extraOptions = "experimental-features = nix-command flakes";
   };
 
   boot = {
     kernelParams = [ "console=ttyS0,115200" ];
     kernelPackages = pkgs.linuxPackages_latest;
-    supportedFilesystems = lib.mkForce [ "btrfs" "vfat" "zfs"];
+    supportedFilesystems = lib.mkForce [
+      "btrfs"
+      "vfat"
+      "zfs"
+    ];
   };
 
   services.openssh = {
@@ -37,35 +49,32 @@
   programs.vim.enable = true;
 
   environment.systemPackages =
-    let crans-ip-config =
-      (
-        pkgs.writeShellScriptBin "crans-ip-config"
-          ''
-            #!/usr/bin/env bash
-            echo -n "ID : "
-            read ID
-            ip -c l
-            echo -n "vlan 10, interface ensXX : "
-            read INTERFACE10
-            ip addr add 172.16.10.$ID/24 dev ens$INTERFACE10
+    let
+      crans-ip-config = (
+        pkgs.writeShellScriptBin "crans-ip-config" ''
+          #!/usr/bin/env bash
+          echo -n "ID : "
+          read ID
+          ip -c l
+          echo -n "vlan 10, interface ensXX : "
+          read INTERFACE10
+          ip addr add 172.16.10.$ID/24 dev ens$INTERFACE10
+          ip link set ens$INTERFACE10 up
+          echo -n "souhaitez-vous configurer le vlan 3 ? (o/N)"
+          read REP
+          if [[ "$REP" == [oOyY] ]]; then
+            echo -n "vlan 3, interface ensXX : "
+            read INTERFACE3
+            ip addr add 172.16.3.$ID/24 dev ens$INTERFACE3
             ip link set ens$INTERFACE10 up
-            echo -n "souhaitez-vous configurer le vlan 3 ? (o/N)"
-            read REP
-            if [[ "$REP" == [oOyY] ]]; then
-              echo -n "vlan 3, interface ensXX : "
-              read INTERFACE3
-              ip addr add 172.16.3.$ID/24 dev ens$INTERFACE3
-              ip link set ens$INTERFACE10 up
-              ip route add default via 172.16.3.99
-            else
-              ip route add default via 172.16.10.101
-            fi
-          ''
-        );
-    crans-disk-config =
-      (
-        pkgs.writeShellScriptBin "crans-disk-config"
+            ip route add default via 172.16.3.99
+          else
+            ip route add default via 172.16.10.101
+          fi
         ''
+      );
+      crans-disk-config = (
+        pkgs.writeShellScriptBin "crans-disk-config" ''
           #!/usr/bin/env bash
           lsblk
           echo -n "disque /dev/XXX : "
@@ -85,7 +94,9 @@
           echo "Pensez également à vous mettre sur la branche appropriée"
         ''
       );
-    in with pkgs; [
+    in
+    with pkgs;
+    [
       bat
       fd
       helix
@@ -94,7 +105,7 @@
       shelldap
       crans-ip-config
       crans-disk-config
-  ];
+    ];
 
   users.users.root = {
     password = "crans";
diff --git a/hosts/vm/collabora/collabora.nix b/hosts/vm/collabora/collabora.nix
index 9956ee1..92e6b23 100644
--- a/hosts/vm/collabora/collabora.nix
+++ b/hosts/vm/collabora/collabora.nix
@@ -8,7 +8,9 @@ let
 
   pam_modules_path = "${pkgs.pam}/lib/security";
   # nixos/modules/security/pam.nix
-  pam_ldap = "${if config.users.ldap.daemon.enable then pkgs.nss_pam_ldapd else pkgs.pam_ldap}/lib/security";
+  pam_ldap = "${
+    if config.users.ldap.daemon.enable then pkgs.nss_pam_ldapd else pkgs.pam_ldap
+  }/lib/security";
 in
 {
   services.collabora-online = {
@@ -22,13 +24,19 @@ in
 
       net = {
         listen = "loopback";
-        post_allow.host = ["::1" "172.0.0.1"];
+        post_allow.host = [
+          "::1"
+          "172.0.0.1"
+        ];
       };
 
       # ouvre seulement les fichiers depuis nextcloud
       storage.wopi = {
         "@allow" = true;
-        host = ["nextcloud.crans.org" "nextcloud.adm.crans.org"];
+        host = [
+          "nextcloud.crans.org"
+          "nextcloud.adm.crans.org"
+        ];
       };
 
       admin_console.enable_pam = true;
diff --git a/hosts/vm/collabora/hardware-configuration.nix b/hosts/vm/collabora/hardware-configuration.nix
index 49d94ca..8f9a1cb 100644
--- a/hosts/vm/collabora/hardware-configuration.nix
+++ b/hosts/vm/collabora/hardware-configuration.nix
@@ -1,22 +1,35 @@
 # Do not modify this file!  It was generated by ‘nixos-generate-config’
 # and may be overwritten by future invocations.  Please make changes
 # to /etc/nixos/configuration.nix instead.
-{ config, lib, pkgs, modulesPath, ... }:
+{
+  config,
+  lib,
+  pkgs,
+  modulesPath,
+  ...
+}:
 
 {
-  imports =
-    [ (modulesPath + "/profiles/qemu-guest.nix")
-    ];
+  imports = [
+    (modulesPath + "/profiles/qemu-guest.nix")
+  ];
 
-  boot.initrd.availableKernelModules = [ "ata_piix" "uhci_hcd" "virtio_pci" "virtio_scsi" "sd_mod" "sr_mod" ];
+  boot.initrd.availableKernelModules = [
+    "ata_piix"
+    "uhci_hcd"
+    "virtio_pci"
+    "virtio_scsi"
+    "sd_mod"
+    "sr_mod"
+  ];
   boot.initrd.kernelModules = [ ];
   boot.kernelModules = [ ];
   boot.extraModulePackages = [ ];
 
-  fileSystems."/" =
-    { device = "/dev/disk/by-uuid/ef139717-388f-41f3-b707-b0f75af3f546";
-      fsType = "ext4";
-    };
+  fileSystems."/" = {
+    device = "/dev/disk/by-uuid/ef139717-388f-41f3-b707-b0f75af3f546";
+    fsType = "ext4";
+  };
 
   swapDevices = [ ];
 
diff --git a/hosts/vm/nextcloud/nextcloud.nix b/hosts/vm/nextcloud/nextcloud.nix
index 0636726..2d4ec65 100644
--- a/hosts/vm/nextcloud/nextcloud.nix
+++ b/hosts/vm/nextcloud/nextcloud.nix
@@ -44,7 +44,6 @@
       ];
     };
 
-
     appstoreEnable = true;
     extraAppsEnable = true;
   };
diff --git a/hosts/vm/periodique/hardware-configuration.nix b/hosts/vm/periodique/hardware-configuration.nix
index 07f0ec4..a1f9edc 100644
--- a/hosts/vm/periodique/hardware-configuration.nix
+++ b/hosts/vm/periodique/hardware-configuration.nix
@@ -1,22 +1,35 @@
 # Do not modify this file!  It was generated by ‘nixos-generate-config’
 # and may be overwritten by future invocations.  Please make changes
 # to /etc/nixos/configuration.nix instead.
-{ config, lib, pkgs, modulesPath, ... }:
+{
+  config,
+  lib,
+  pkgs,
+  modulesPath,
+  ...
+}:
 
 {
-  imports =
-    [ (modulesPath + "/profiles/qemu-guest.nix")
-    ];
+  imports = [
+    (modulesPath + "/profiles/qemu-guest.nix")
+  ];
 
-  boot.initrd.availableKernelModules = [ "ata_piix" "uhci_hcd" "virtio_pci" "virtio_scsi" "sd_mod" "sr_mod" ];
+  boot.initrd.availableKernelModules = [
+    "ata_piix"
+    "uhci_hcd"
+    "virtio_pci"
+    "virtio_scsi"
+    "sd_mod"
+    "sr_mod"
+  ];
   boot.initrd.kernelModules = [ ];
   boot.kernelModules = [ ];
   boot.extraModulePackages = [ ];
 
-  fileSystems."/" =
-    { device = "/dev/disk/by-uuid/ad1cdd57-44a2-4e1c-83c7-8810a567e0f7";
-      fsType = "ext4";
-    };
+  fileSystems."/" = {
+    device = "/dev/disk/by-uuid/ad1cdd57-44a2-4e1c-83c7-8810a567e0f7";
+    fsType = "ext4";
+  };
 
   swapDevices = [ ];
 
diff --git a/hosts/vm/periodique/networking.nix b/hosts/vm/periodique/networking.nix
index b8e6068..a5fbb24 100644
--- a/hosts/vm/periodique/networking.nix
+++ b/hosts/vm/periodique/networking.nix
@@ -6,17 +6,21 @@
       ens18 = {
 
         ipv4 = {
-          addresses = [{
-            address = "172.16.10.118";
-            prefixLength = 24;
-          }];
+          addresses = [
+            {
+              address = "172.16.10.118";
+              prefixLength = 24;
+            }
+          ];
         };
 
         ipv6 = {
-          addresses = [{
-            address = "fd00::10:0:ff:fe01:1810";
-            prefixLength = 64;
-          }];
+          addresses = [
+            {
+              address = "fd00::10:0:ff:fe01:1810";
+              prefixLength = 64;
+            }
+          ];
         };
 
       };
@@ -24,27 +28,35 @@
       ens19 = {
 
         ipv4 = {
-          addresses = [{
-            address = "172.16.3.118";
-            prefixLength = 24;
-          }];
-          routes = [{
-            address = "0.0.0.0";
-            via = "172.16.3.99";
-            prefixLength = 0;
-          }];
+          addresses = [
+            {
+              address = "172.16.3.118";
+              prefixLength = 24;
+            }
+          ];
+          routes = [
+            {
+              address = "0.0.0.0";
+              via = "172.16.3.99";
+              prefixLength = 0;
+            }
+          ];
         };
 
         ipv6 = {
-          addresses = [{
-            address = "2a0c:700:3::ff:fe01:1803";
-            prefixLength = 64;
-          }];
-          routes = [{
-            address = "::";
-            via = "2a0c:700:3::ff:fe00:9903";
-            prefixLength = 0;
-          }];
+          addresses = [
+            {
+              address = "2a0c:700:3::ff:fe01:1803";
+              prefixLength = 64;
+            }
+          ];
+          routes = [
+            {
+              address = "::";
+              via = "2a0c:700:3::ff:fe00:9903";
+              prefixLength = 0;
+            }
+          ];
         };
 
       };
diff --git a/hosts/vm/reverseproxy/hardware-configuration.nix b/hosts/vm/reverseproxy/hardware-configuration.nix
index f512116..a308559 100644
--- a/hosts/vm/reverseproxy/hardware-configuration.nix
+++ b/hosts/vm/reverseproxy/hardware-configuration.nix
@@ -1,22 +1,35 @@
 # Do not modify this file!  It was generated by ‘nixos-generate-config’
 # and may be overwritten by future invocations.  Please make changes
 # to /etc/nixos/configuration.nix instead.
-{ config, lib, pkgs, modulesPath, ... }:
+{
+  config,
+  lib,
+  pkgs,
+  modulesPath,
+  ...
+}:
 
 {
-  imports =
-    [ (modulesPath + "/profiles/qemu-guest.nix")
-    ];
+  imports = [
+    (modulesPath + "/profiles/qemu-guest.nix")
+  ];
 
-  boot.initrd.availableKernelModules = [ "ata_piix" "uhci_hcd" "virtio_pci" "virtio_scsi" "sd_mod" "sr_mod" ];
+  boot.initrd.availableKernelModules = [
+    "ata_piix"
+    "uhci_hcd"
+    "virtio_pci"
+    "virtio_scsi"
+    "sd_mod"
+    "sr_mod"
+  ];
   boot.initrd.kernelModules = [ ];
   boot.kernelModules = [ ];
   boot.extraModulePackages = [ ];
 
-  fileSystems."/" =
-    { device = "/dev/disk/by-uuid/c4c2de17-2965-4c0a-b4c5-7d518712c9aa";
-      fsType = "ext4";
-    };
+  fileSystems."/" = {
+    device = "/dev/disk/by-uuid/c4c2de17-2965-4c0a-b4c5-7d518712c9aa";
+    fsType = "ext4";
+  };
 
   swapDevices = [ ];
 
diff --git a/modules/crans/grub.nix b/modules/crans/grub.nix
index c4ce65b..e087630 100644
--- a/modules/crans/grub.nix
+++ b/modules/crans/grub.nix
@@ -1,4 +1,4 @@
-{...}:
+{ ... }:
 {
   boot.loader.grub = {
     splashImage = ../../assets/nix-crans_bootloader.png;
diff --git a/modules/crans/home.nix b/modules/crans/home.nix
index e2e4bab..071f629 100644
--- a/modules/crans/home.nix
+++ b/modules/crans/home.nix
@@ -31,7 +31,7 @@ in
       home_adh = mkIf cfg.homeAdh.enable {
         mountPoint = "/home-adh";
         device = "172.16.4.2:/pool/home";
-        fsType = "nfs";    
+        fsType = "nfs";
       };
     };
   };
diff --git a/modules/crans/restic_client.nix b/modules/crans/restic_client.nix
index b0b3228..140a90e 100644
--- a/modules/crans/restic_client.nix
+++ b/modules/crans/restic_client.nix
@@ -52,11 +52,13 @@ in
         paths = [
           "/etc"
           "/var"
-        ] ++ cfg.additionalPaths;
+        ]
+        ++ cfg.additionalPaths;
         exclude = [
           "/var/cache"
           "/var/lib/lxcfs"
-        ] ++ cfg.additionalExcludes;
+        ]
+        ++ cfg.additionalExcludes;
         timerConfig = {
           OnCalendar = cfg.when;
           RandomizedDelaySec = "6h";
diff --git a/modules/services/reverseproxy.nix b/modules/services/reverseproxy.nix
index 5098771..a142575 100644
--- a/modules/services/reverseproxy.nix
+++ b/modules/services/reverseproxy.nix
@@ -202,25 +202,27 @@ in
           }) cfg.virtualHosts;
 
           # Génération des alias
-          getAliases = name: config: lib.foldr (
-            tld: acc:
-            acc
-            ++
-            (lib.foldr (alias: acc: acc ++ ["${alias}.crans.${tld}"]) ["${name}.crans.${tld}"] config.serverAliases)
-          )
-          (lib.foldr (alias: acc: acc ++ ["${alias}.crans.${mainTld}"]) [] config.serverAliases)
-          otherTld;
+          getAliases =
+            name: config:
+            lib.foldr
+              (
+                tld: acc:
+                acc
+                ++ (lib.foldr (alias: acc: acc ++ [ "${alias}.crans.${tld}" ]) [
+                  "${name}.crans.${tld}"
+                ] config.serverAliases)
+              )
+              (lib.foldr (alias: acc: acc ++ [ "${alias}.crans.${mainTld}" ]) [ ] config.serverAliases)
+              otherTld;
 
           # Configuration des alias
           aliasConfig = lib.foldr (
             vhost: acc:
             acc
-            //
-            lib.foldr (
+            // lib.foldr (
               alias: acc:
               acc
-              //
-              {
+              // {
                 "${vhost.name}-alias-${alias}" = rec {
                   rejectSSL = vhost.value.httpOnly;
                   forceSSL = !rejectSSL;
diff --git a/pkgs/belenios/default.nix b/pkgs/belenios/default.nix
index 3776e62..7f4441b 100644
--- a/pkgs/belenios/default.nix
+++ b/pkgs/belenios/default.nix
@@ -1,28 +1,83 @@
-{
-  fetchFromGitLab,
-  ocamlPackages,
-  belenios-server,
-  belenios-tool
-}:
+{ pkgs }:
+
+let
+  ocamlPackages = pkgs.ocaml-ng.ocamlPackages_5_3;
 
-ocamlPackages.buildDunePackage rec {
-  pname = "belenios";
   version = "3.1";
-
-  src = fetchFromGitLab {
+  src = pkgs.fetchFromGitLab {
     domain = "gitlab.inria.fr";
-    owner = pname;
-    repo = pname;
+    owner = "belenios";
+    repo = "belenios";
     rev = version;
     hash = "sha256-Mrx6AQakeBg6IeqNyDUZ5j6KaUGOh1AUfrLIxvDI45M=";
   };
-  
-  nativeBuildInputs = with ocamlPackages; [
-    odoc
-  ];
+in
 
-  buildInputs = [
-    belenios-server
-    belenios-tool
-  ];
+pkgs.stdenvNoCC.mkDerivation rec {
+  name = "belenios";
+  inherit version;
+
+  belenios = ocamlPackages.buildDunePackage {
+    pname = "belenios";
+    inherit version src;
+
+    nativeBuildInputs = with ocamlPackages; [
+      odoc
+    ];
+
+    buildInputs = [
+      belenios-server
+      belenios-tool
+    ];
+  };
+
+  belenios-lib = pkgs.callPackage ./lib.nix {
+    inherit
+      version
+      src
+      belenios-platform
+      ocamlPackages
+      ;
+  };
+
+  belenios-platform = pkgs.callPackage ./platform.nix { inherit version src ocamlPackages; };
+
+  belenios-platform-js = pkgs.callPackage ./platform-js.nix {
+    inherit
+      version
+      src
+      ocamlPackages
+      belenios-platform
+      ;
+  };
+
+  belenios-platform-native = pkgs.callPackage ./platform-native.nix {
+    inherit
+      version
+      src
+      ocamlPackages
+      belenios-platform
+      ;
+  };
+
+  belenios-server = pkgs.callPackage ./server.nix {
+    inherit
+      version
+      src
+      ocamlPackages
+      belenios-lib
+      belenios-platform-native
+      belenios-platform-js
+      ;
+  };
+
+  belenios-tool = pkgs.callPackage ./tool.nix {
+    inherit
+      version
+      src
+      ocamlPackages
+      belenios-lib
+      belenios-platform-native
+      ;
+  };
 }
diff --git a/pkgs/belenios/flake.lock b/pkgs/belenios/flake.lock
deleted file mode 100644
index 2e80cc2..0000000
--- a/pkgs/belenios/flake.lock
+++ /dev/null
@@ -1,59 +0,0 @@
-{
-  "nodes": {
-    "flake-parts": {
-      "inputs": {
-        "nixpkgs-lib": "nixpkgs-lib"
-      },
-      "locked": {
-        "lastModified": 1772408722,
-        "narHash": "sha256-rHuJtdcOjK7rAHpHphUb1iCvgkU3GpfvicLMwwnfMT0=",
-        "owner": "hercules-ci",
-        "repo": "flake-parts",
-        "rev": "f20dc5d9b8027381c474144ecabc9034d6a839a3",
-        "type": "github"
-      },
-      "original": {
-        "id": "flake-parts",
-        "type": "indirect"
-      }
-    },
-    "nixpkgs": {
-      "locked": {
-        "lastModified": 1774244481,
-        "narHash": "sha256-4XfMXU0DjN83o6HWZoKG9PegCvKvIhNUnRUI19vzTcQ=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "4590696c8693fea477850fe379a01544293ca4e2",
-        "type": "github"
-      },
-      "original": {
-        "id": "nixpkgs",
-        "ref": "nixos-25.11",
-        "type": "indirect"
-      }
-    },
-    "nixpkgs-lib": {
-      "locked": {
-        "lastModified": 1772328832,
-        "narHash": "sha256-e+/T/pmEkLP6BHhYjx6GmwP5ivonQQn0bJdH9YrRB+Q=",
-        "owner": "nix-community",
-        "repo": "nixpkgs.lib",
-        "rev": "c185c7a5e5dd8f9add5b2f8ebeff00888b070742",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nix-community",
-        "repo": "nixpkgs.lib",
-        "type": "github"
-      }
-    },
-    "root": {
-      "inputs": {
-        "flake-parts": "flake-parts",
-        "nixpkgs": "nixpkgs"
-      }
-    }
-  },
-  "root": "root",
-  "version": 7
-}
diff --git a/pkgs/belenios/lib.nix b/pkgs/belenios/lib.nix
index 615b8a2..190564c 100644
--- a/pkgs/belenios/lib.nix
+++ b/pkgs/belenios/lib.nix
@@ -1,12 +1,13 @@
 {
-  belenios,
+  version,
+  src,
   belenios-platform,
   ocamlPackages,
 }:
 
 ocamlPackages.buildDunePackage {
   pname = "belenios-lib";
-  inherit (belenios) version src;
+  inherit version src;
 
   nativeBuildInputs = with ocamlPackages; [
     atdgen
@@ -18,16 +19,15 @@ ocamlPackages.buildDunePackage {
     biniou
   ];
 
-  propagatedBuildInputs =
-    [
-      belenios-platform
-    ]
-    ++ (with ocamlPackages; [
-      atdgen-runtime
-      base64
-      ocaml_gettext
-      re
-      uri
-      yojson
-    ]);
+  propagatedBuildInputs = [
+    belenios-platform
+  ]
+  ++ (with ocamlPackages; [
+    atdgen-runtime
+    base64
+    ocaml_gettext
+    re
+    uri
+    yojson
+  ]);
 }
diff --git a/pkgs/belenios/platform-js.nix b/pkgs/belenios/platform-js.nix
index d980e57..8f72e8e 100644
--- a/pkgs/belenios/platform-js.nix
+++ b/pkgs/belenios/platform-js.nix
@@ -1,12 +1,13 @@
 {
-  belenios,
+  version,
+  src,
   belenios-platform,
   ocamlPackages,
 }:
 
 ocamlPackages.buildDunePackage {
   pname = "belenios-platform-js";
-  inherit (belenios) version src;
+  inherit version src;
 
   nativeBuildInputs = with ocamlPackages; [
     odoc
diff --git a/pkgs/belenios/platform-native.nix b/pkgs/belenios/platform-native.nix
index aecc7be..b614839 100644
--- a/pkgs/belenios/platform-native.nix
+++ b/pkgs/belenios/platform-native.nix
@@ -1,27 +1,27 @@
 {
-  belenios,
+  version,
+  src,
   belenios-platform,
   ocamlPackages,
-  libsodium
+  libsodium,
 }:
 
 ocamlPackages.buildDunePackage {
   pname = "belenios-platform-native";
-  inherit (belenios) version src;
+  inherit version src;
 
   nativeBuildInputs = with ocamlPackages; [
     odoc
   ];
 
-  buildInputs =
-    [
-      belenios-platform
-      libsodium
-    ]
-    ++ (with ocamlPackages; [
-      lwt
-      cryptokit
-      digestif
-      zarith
-    ]);
+  buildInputs = [
+    belenios-platform
+    libsodium
+  ]
+  ++ (with ocamlPackages; [
+    lwt
+    cryptokit
+    digestif
+    zarith
+  ]);
 }
diff --git a/pkgs/belenios/platform.nix b/pkgs/belenios/platform.nix
index bc7dbeb..a18b384 100644
--- a/pkgs/belenios/platform.nix
+++ b/pkgs/belenios/platform.nix
@@ -1,15 +1,12 @@
 {
-  belenios,
+  version,
+  src,
   ocamlPackages,
 }:
 
 ocamlPackages.buildDunePackage {
   pname = "belenios-platform";
-  inherit (belenios) version src;
-
-  # nativeBuildInputs = with ocamlPackages; [
-  #   odoc
-  # ];
+  inherit version src;
 
   propagatedBuildInputs = with ocamlPackages; [
     lwt
diff --git a/pkgs/belenios/server.nix b/pkgs/belenios/server.nix
index e95b5bc..1f15860 100644
--- a/pkgs/belenios/server.nix
+++ b/pkgs/belenios/server.nix
@@ -1,5 +1,6 @@
 {
-  belenios,
+  version,
+  src,
   belenios-lib,
   belenios-platform-native,
   belenios-platform-js,
@@ -8,9 +9,7 @@
 
 ocamlPackages.buildDunePackage {
   pname = "belenios-server";
-  inherit (belenios) version src;
-
-  # dontDetectOcamlConflicts = true;
+  inherit version src;
 
   nativeBuildInputs = with ocamlPackages; [
     atdgen
@@ -21,39 +20,36 @@ ocamlPackages.buildDunePackage {
 
   patches = [ ./netstring.patch ];
 
-  buildInputs =
-    [
-      # belenios-lib
-      # belenios-platform-native
-      belenios-platform-js
-    ]
-    ++ (with ocamlPackages; [
-      # calendar
-      # csv
-      eliom
-      gettext-camomile
-      # lwt
-      # ocamlnet
-      ocsipersist
-      ocsipersist-lib
-      ocsipersist-sqlite-config
-      ocsigen_server
-      ocaml_gettext
-      xml-light
-      tyxml
-      markup
-      sendmail
-    ]);
+  buildInputs = [
+    # belenios-lib
+    # belenios-platform-native
+    belenios-platform-js
+  ]
+  ++ (with ocamlPackages; [
+    # calendar
+    # csv
+    eliom
+    gettext-camomile
+    # lwt
+    # ocamlnet
+    ocsipersist
+    ocsipersist-lib
+    ocsipersist-sqlite-config
+    ocsigen_server
+    ocaml_gettext
+    xml-light
+    tyxml
+    markup
+    sendmail
+  ]);
 
-  propagatedBuildInputs =
-    [
-      belenios-lib
-      belenios-platform-native
-    ]
-    ++ (with ocamlPackages; [
-      calendar
-      lwt
-      xml-light
-    ]);
+  propagatedBuildInputs = [
+    belenios-lib
+    belenios-platform-native
+  ]
+  ++ (with ocamlPackages; [
+    calendar
+    lwt
+    xml-light
+  ]);
 }
-
diff --git a/pkgs/belenios/services.nix b/pkgs/belenios/services.nix
index 1d19ec0..bdd4c0b 100644
--- a/pkgs/belenios/services.nix
+++ b/pkgs/belenios/services.nix
@@ -1,11 +1,16 @@
-{ lib, config, pkgs, ... }:
+{
+  lib,
+  config,
+  pkgs,
+  ...
+}:
 
 let
   cfg = config.services.belenios;
 
   configFile = pkgs.writeText "belenios-server.conf" cfg.config;
 
-  inherit (lib) mkEnableOption mkPackageOption mkOption mkIf;
+  inherit (lib) mkEnableOption mkOption mkIf;
 in
 {
   options.services.belenios = {
@@ -134,7 +139,7 @@ in
       group = "belenios";
     };
     users.groups.belenios = { };
-    
+
     systemd.services.belenios = {
       description = "Belenios Web server service";
       wantedBy = [ "multi-user.target" ];
diff --git a/pkgs/belenios/tool.nix b/pkgs/belenios/tool.nix
index 2549ae5..7db39d0 100644
--- a/pkgs/belenios/tool.nix
+++ b/pkgs/belenios/tool.nix
@@ -1,31 +1,30 @@
 {
-  belenios,
+  version,
+  src,
   belenios-lib,
-  # belenios-platform,
   belenios-platform-native,
   libsodium,
-  ocamlPackages
+  ocamlPackages,
 }:
 
 ocamlPackages.buildDunePackage {
   pname = "belenios-tool";
-  inherit (belenios) version src;
+  inherit version src;
 
-  buildInputs =
-    [
-      belenios-lib
-      # belenios-platform
-      belenios-platform-native
-      libsodium
-    ]
-    ++ (with ocamlPackages; [
-      cmdliner
-      cryptokit
-      hex
-    ]);
+  buildInputs = [
+    belenios-lib
+    # belenios-platform
+    belenios-platform-native
+    libsodium
+  ]
+  ++ (with ocamlPackages; [
+    cmdliner
+    cryptokit
+    hex
+  ]);
 
   propagatedBuildInputs = with ocamlPackages; [
     lwt
     cohttp-lwt-unix
-  ];  
+  ];
 }
diff --git a/pkgs/default.nix b/pkgs/default.nix
index 97a42e4..3737008 100644
--- a/pkgs/default.nix
+++ b/pkgs/default.nix
@@ -1,10 +1,9 @@
 { ... }:
 
 {
-  imports =
-    [
-      ./services.nix
-    ];
+  imports = [
+    ./services.nix
+  ];
 
   # Import local packages
   nixpkgs.overlays = [
diff --git a/pkgs/flake.nix b/pkgs/flake.nix
index 38637cd..1d8dbe4 100644
--- a/pkgs/flake.nix
+++ b/pkgs/flake.nix
@@ -3,25 +3,50 @@
     nixpkgs.url = "nixpkgs/nixos-25.11";
   };
 
-  outputs = inputs@{ flake-parts, ... }:
+  outputs =
+    inputs@{ flake-parts, ... }:
     flake-parts.lib.mkFlake { inherit inputs; } {
       systems = [ "x86_64-linux" ];
-      perSystem = { pkgs, ... }: rec {
-        devShells.default = pkgs.mkShell {
-          packages = [];
+      perSystem =
+        { pkgs, ... }:
+        rec {
+          devShells.default = pkgs.mkShell {
+            packages = [ ];
+          };
+          packages =
+            let
+              ocamlPackages = pkgs.ocaml-ng.ocamlPackages_5_2;
+            in
+            rec {
+              belenios = pkgs.callPackage ./belenios { inherit ocamlPackages belenios-server belenios-tool; };
+              belenios-lib = pkgs.callPackage ./belenios/lib.nix {
+                inherit belenios ocamlPackages belenios-platform;
+              };
+              belenios-tool = pkgs.callPackage ./belenios/tool.nix {
+                inherit
+                  belenios
+                  ocamlPackages
+                  belenios-lib
+                  belenios-platform-native
+                  ;
+              };
+              belenios-server = pkgs.callPackage ./belenios/server.nix {
+                inherit
+                  belenios
+                  ocamlPackages
+                  belenios-lib
+                  belenios-platform-native
+                  belenios-platform-js
+                  ;
+              };
+              belenios-platform = pkgs.callPackage ./belenios/platform.nix { inherit belenios ocamlPackages; };
+              belenios-platform-native = pkgs.callPackage ./belenios/platform-native.nix {
+                inherit belenios ocamlPackages belenios-platform;
+              };
+              belenios-platform-js = pkgs.callPackage ./belenios/platform-js.nix {
+                inherit belenios ocamlPackages belenios-platform;
+              };
+            };
         };
-        packages = let
-          ocamlPackages = pkgs.ocaml-ng.ocamlPackages_5_2;
-        in rec {
-          belenios = pkgs.callPackage ./belenios { inherit ocamlPackages belenios-server belenios-tool; };
-          belenios-lib = pkgs.callPackage ./belenios/lib.nix { inherit belenios ocamlPackages belenios-platform; };
-          belenios-tool = pkgs.callPackage ./belenios/tool.nix { inherit belenios ocamlPackages belenios-lib belenios-platform-native; };
-          belenios-server = pkgs.callPackage ./belenios/server.nix { inherit belenios ocamlPackages belenios-lib belenios-platform-native belenios-platform-js; };
-          belenios-platform = pkgs.callPackage ./belenios/platform.nix { inherit belenios ocamlPackages; };
-          belenios-platform-native = pkgs.callPackage ./belenios/platform-native.nix { inherit belenios ocamlPackages belenios-platform; };
-          belenios-platform-js = pkgs.callPackage ./belenios/platform-js.nix { inherit belenios ocamlPackages belenios-platform; };
-        };
-      };
     };
 }
-
diff --git a/pkgs/packages.nix b/pkgs/packages.nix
index c112367..ecf12ef 100644
--- a/pkgs/packages.nix
+++ b/pkgs/packages.nix
@@ -1,14 +1,5 @@
-{ pkgs ? import <nixpkgs> { } }:
+{ pkgs, ... }:
 
-let
-  ocamlPackages = pkgs.ocaml-ng.ocamlPackages_4_14;
-in
-rec {
-  belenios = pkgs.callPackage ./belenios { inherit ocamlPackages belenios-server belenios-tool; };
-  belenios-lib = pkgs.callPackage ./belenios/lib.nix { inherit belenios ocamlPackages belenios-platform; };
-  belenios-tool = pkgs.callPackage ./belenios/tool.nix { inherit belenios ocamlPackages belenios-lib belenios-platform belenios-platform-native; };
-  belenios-server = pkgs.callPackage ./belenios/server.nix { inherit belenios ocamlPackages belenios-lib belenios-platform-native belenios-platform-js; };
-  belenios-platform = pkgs.callPackage ./belenios/platform.nix { inherit belenios ocamlPackages; };
-  belenios-platform-native = pkgs.callPackage ./belenios/platform-native.nix { inherit belenios ocamlPackages belenios-platform; };
-  belenios-platform-js = pkgs.callPackage ./belenios/platform-js.nix { inherit belenios ocamlPackages belenios-platform; };
+{
+  belenios = pkgs.callPackage ./belenios { inherit pkgs; };
 }
diff --git a/pkgs/services.nix b/pkgs/services.nix
index baba8b8..d3f72a9 100644
--- a/pkgs/services.nix
+++ b/pkgs/services.nix
@@ -1,8 +1,7 @@
 { ... }:
 
 {
-  imports =
-    [
-      ./belenios/services.nix
-    ];
+  imports = [
+    ./belenios/services.nix
+  ];
 }