diff --git a/export/hmModule.nix b/export/hmModule.nix
index 8bac504..165dbac 100644
--- a/export/hmModule.nix
+++ b/export/hmModule.nix
@@ -1,6 +1,3 @@
-{ ... }@flake:
-{ ... }@inputs:
-{ ... }@imports:
-{
-  imports = builtins.attrValues (flake.hmModules or { });
+{ ... }@flake: { ... }@inputs: { ... }@imports: {
+  imports = builtins.attrValues (flake.hmModules or {});
 }
diff --git a/export/hmModules.nix b/export/hmModules.nix
index 22a47bf..ff37dd1 100644
--- a/export/hmModules.nix
+++ b/export/hmModules.nix
@@ -1,8 +1,4 @@
-flake:
-{ ... }@inputs:
-{ ... }@imports:
-let
+flake: { ... }@inputs: { ... }@imports: let
   module' = name: imports: builtins.trace "user module: ${name}" { inherit imports; };
   modules = builtins.mapAttrs module' imports."user/module";
-in
-{ default = module' "default" (builtins.attrValues modules); } // modules
+in { default = module' "default" (builtins.attrValues modules); } // modules
diff --git a/export/hmProfiles.nix b/export/hmProfiles.nix
index 0ce4160..192bda7 100644
--- a/export/hmProfiles.nix
+++ b/export/hmProfiles.nix
@@ -1,7 +1,4 @@
-{ ... }@flake:
-{ ... }@inputs:
-{ profile, ... }@imports:
-let
+{ ... }@flake: { ... }@inputs: { profile, ... }@imports: let
   profile' = name: snippets: builtins.trace "home-manager: profile: ${name}" { imports = snippets; };
-in
-builtins.mapAttrs profile' profile
+in builtins.mapAttrs profile' profile
+
diff --git a/export/iso.nix b/export/iso.nix
index 68c076d..153bd59 100644
--- a/export/iso.nix
+++ b/export/iso.nix
@@ -1,50 +1,32 @@
-{
-  nixosUsers ? { },
-  nixosGroups ? { },
-  nixosModules,
-  hmModules ? {
-    default = { };
-  },
-  ...
-}@flake:
-{ ... }@inputs:
-{ host, ... }@imports:
-let
-  host' =
-    name: snippets:
-    let
+{ nixosUsers ? {}, nixosGroups ? {}, nixosModules, hmModules ? { default = {}; }, ...}@flake: { ... }@inputs: { host, ... }@imports: let
+  host' = name: snippets: let
 
-      overlay = self: super: {
-        makeModulesClosure = x: super.makeModulesClosure (x // { allowMissing = true; });
+    overlay = self: super: {
+      makeModulesClosure = x: super.makeModulesClosure (x // { allowMissing = true; });
+    };
+
+    common = { modulesPath, lib, ... }: {
+      config.nixpkgs.overlays = [ overlay ];
+      config.networking.hostName = lib.mkForce name;
+      config.home-manager = {
+        sharedModules = [ hmModules.default ] ;
       };
 
-      common =
-        { modulesPath, lib, ... }:
-        {
-          config.nixpkgs.overlays = [ overlay ];
-          config.networking.hostName = lib.mkForce name;
-          config.home-manager = {
-            sharedModules = [ hmModules.default ];
-          };
+      imports = [
+        (modulesPath + "/installer/cd-dvd/installation-cd-minimal-new-kernel-no-zfs.nix")
+        nixosModules.default
+        inputs.home-manager.nixosModules.default
+      ];
+    };
 
-          imports = [
-            (modulesPath + "/installer/cd-dvd/installation-cd-minimal-new-kernel-no-zfs.nix")
-            nixosModules.default
-            inputs.home-manager.nixosModules.default
-          ];
-        };
-
-      system = inputs.nixpkgs.lib.nixosSystem {
-        specialArgs = { inherit inputs flake; };
-        modules = [
-          common
-        ]
+    system = inputs.nixpkgs.lib.nixosSystem {
+      specialArgs = { inherit inputs flake; };
+      modules = [ common ]
         ++ snippets
         ++ builtins.attrValues nixosUsers
-        ++ builtins.attrValues nixosGroups;
-      };
-    in
-    system.config.system.build.isoImage;
+        ++ builtins.attrValues nixosGroups
+        ;
+    };
+  in system.config.system.build.isoImage;
 
-in
-builtins.mapAttrs host' host
+in builtins.mapAttrs host' host
diff --git a/export/nixosConfigurations.nix b/export/nixosConfigurations.nix
index 70f9e2c..e712097 100644
--- a/export/nixosConfigurations.nix
+++ b/export/nixosConfigurations.nix
@@ -1,45 +1,19 @@
-{
-  nixosUsers ? { },
-  nixosGroups ? { },
-  nixosModules,
-  hmModules ? {
-    default = { };
-  },
-  ...
-}@flake:
-{ ... }@inputs:
-{ host, ... }@imports:
-let
-  host' =
-    name: snippets:
-    let
-      system =
-        {
-          namespace ? "fbs42",
-          nixpkgs ? "nixpkgs",
-        }:
-        inputs.${nixpkgs}.lib.nixosSystem {
-          specialArgs = { inherit inputs flake namespace; };
-          modules =
-            builtins.concatLists (
-              map (
-                base: builtins.attrValues (flake.lib.scan { base = "${base}/host/${name}"; })
-              ) flake.lib.schema.base
-            )
-            ++ [ { config.networking.hostName = name; } ]
-            ++ [ nixosModules.default ]
-            ++ [ inputs.home-manager.nixosModules.default ]
-            ++ [ { config.home-manager.sharedModules = [ hmModules.default ]; } ]
-            ++ [ { config.home-manager.extraSpecialArgs = { inherit flake namespace; }; } ]
-            ++ builtins.attrValues nixosUsers
-            ++ builtins.attrValues nixosGroups;
-        };
+{ nixosUsers ? {}, nixosGroups ? {}, nixosModules, hmModules ? { default = {}; }, ...}@flake: { ... }@inputs: { host, ... }@imports: let
+  host' = name: snippets: let
+    system = { namespace?"fbs42", nixpkgs?"nixpkgs" }: inputs.${nixpkgs}.lib.nixosSystem {
+      specialArgs = { inherit inputs flake namespace; };
+      modules = builtins.concatLists (map (base: builtins.attrValues (flake.lib.scan { base = "${base}/host/${name}"; })) flake.lib.schema.base)
+        ++ [ { config.networking.hostName = name; } ]
+        ++ [ nixosModules.default ]
+        ++ [ inputs.home-manager.nixosModules.default ]
+        ++ [ { config.home-manager.sharedModules = [ hmModules.default ]; } ]
+        ++ [ { config.home-manager.extraSpecialArgs = { inherit flake namespace; }; } ]
+        ++ builtins.attrValues nixosUsers
+        ++ builtins.attrValues nixosGroups
+        ;
+    };
 
-      cfg =
-        assert builtins.length snippets == 1;
-        builtins.head snippets;
-    in
-    system cfg;
+    cfg = assert builtins.length snippets == 1; builtins.head snippets;
+  in system cfg;
 
-in
-builtins.mapAttrs host' host
+in builtins.mapAttrs host' host
diff --git a/export/nixosGroup.nix b/export/nixosGroup.nix
index 5deaea2..159b8c1 100644
--- a/export/nixosGroup.nix
+++ b/export/nixosGroup.nix
@@ -1,25 +1,10 @@
-flake:
-{ ... }@inputs:
-{ group, ... }@imports:
-let
-  group' =
-    name: snippets:
-    {
-      pkgs,
-      lib,
-      options,
-      config,
-      ...
-    }@args:
-    let
-      invoke = x: if builtins.isFunction x then x args else x;
-    in
-    {
-      options.fbs42.group.${name} = lib.mkEnableOption name;
-      config.users.groups.${name} = lib.mkIf (
-        config.fbs42.group.${name}
-        || builtins.any (usr: usr.group == name) (builtins.attrValues config.users.users)
-      ) (lib.mkMerge (map invoke snippets));
-    };
-in
-builtins.mapAttrs group' group
+flake: { ... }@inputs: { group, ... }@imports: let
+  group' = name: snippets: { pkgs, lib, options, config, ... }@args: let
+    invoke = x: if builtins.isFunction x then x args else x;
+  in {
+    options.fbs42.group.${name} = lib.mkEnableOption name;
+    config.users.groups.${name} = lib.mkIf
+      (config.fbs42.group.${name} || builtins.any (usr: usr.group == name) (builtins.attrValues config.users.users))
+      (lib.mkMerge (map invoke snippets));
+  };
+in builtins.mapAttrs group' group
diff --git a/export/nixosModules.nix b/export/nixosModules.nix
index e91361c..c5dae22 100644
--- a/export/nixosModules.nix
+++ b/export/nixosModules.nix
@@ -1,14 +1,3 @@
-flake:
-{ ... }@inputs:
-{ module, ... }@imports:
-let
-  modules = builtins.mapAttrs (
-    name: imports: builtins.trace "module: ${name}" { inherit imports; }
-  ) module;
-in
-{
-  default = {
-    imports = builtins.attrValues modules;
-  };
-}
-// modules
+flake: { ... }@inputs: { module, ... }@imports: let
+  modules = builtins.mapAttrs (name: imports: builtins.trace "module: ${name}" { inherit imports; }) module;
+in { default = { imports = builtins.attrValues modules; }; } // modules
diff --git a/export/nixosProfiles.nix b/export/nixosProfiles.nix
index 8b22fd4..1655190 100644
--- a/export/nixosProfiles.nix
+++ b/export/nixosProfiles.nix
@@ -1,4 +1,2 @@
-{ ... }@flake:
-{ ... }@inputs:
-{ profile, ... }@imports:
-builtins.mapAttrs (name: imports: builtins.trace "profile: ${name}" { inherit imports; }) profile
+{ ... }@flake: { ... }@inputs: { profile, ... }@imports:
+  builtins.mapAttrs (name: imports: builtins.trace "profile: ${name}" { inherit imports; }) profile
diff --git a/export/nixosUsers.nix b/export/nixosUsers.nix
index ca13dbd..f0ff763 100644
--- a/export/nixosUsers.nix
+++ b/export/nixosUsers.nix
@@ -1,15 +1,5 @@
-self:
-{ ... }@inputs:
-{ user, ... }@imports:
-let
-  user' =
-    name: snippets:
-    {
-      pkgs,
-      lib,
-      config,
-      ...
-    }@args:
+self: { ... }@inputs: { user, ... }@imports: let
+  user' = name: snippets: { pkgs, lib, config, ... }@args:
     builtins.trace "user: ${name}" {
       options.fbs42.user.${name} = lib.mkEnableOption name;
       ## no longer with nixos-24.11
@@ -17,15 +7,11 @@ let
       #  group = lib.mkDefault name;
       #};
 
-      imports = map (
-        { user, home-manager }:
-        {
-          config = lib.mkIf config.fbs42.user.${name} {
-            users.users.${name} = (user args);
-            home-manager.users.${name} = home-manager;
-          };
-        }
-      ) snippets;
+      imports = map ({ user, home-manager}: {
+        config = lib.mkIf config.fbs42.user.${name} {
+          users.users.${name} = (user args);
+          home-manager.users.${name} = home-manager;
+        };
+      }) snippets;
     };
-in
-builtins.mapAttrs user' user
+in builtins.mapAttrs user' user
diff --git a/export/sdcard-rpi4.nix b/export/sdcard-rpi4.nix
index 8c8359a..24a1a9d 100644
--- a/export/sdcard-rpi4.nix
+++ b/export/sdcard-rpi4.nix
@@ -1,52 +1,34 @@
-{
-  nixosUsers ? { },
-  nixosGroups ? { },
-  nixosModules,
-  hmModules ? {
-    default = { };
-  },
-  ...
-}@flake:
-{ ... }@inputs:
-{ host, ... }@imports:
-let
-  host' =
-    name: snippets:
-    let
+{ nixosUsers ? {}, nixosGroups ? {}, nixosModules, hmModules ? { default = {}; }, ...}@flake: { ... }@inputs: { host, ... }@imports: let
+  host' = name: snippets: let
 
-      overlay = self: super: {
-        makeModulesClosure = x: super.makeModulesClosure (x // { allowMissing = true; });
+    overlay = self: super: {
+      makeModulesClosure = x: super.makeModulesClosure (x // { allowMissing = true; });
+    };
+
+    common = { modulesPath, lib, ... }: {
+      config.nixpkgs.overlays = [ overlay ];
+      config.networking.hostName = lib.mkForce name;
+      config.home-manager = {
+        sharedModules = [ hmModules.default ] ;
       };
 
-      common =
-        { modulesPath, lib, ... }:
-        {
-          config.nixpkgs.overlays = [ overlay ];
-          config.networking.hostName = lib.mkForce name;
-          config.home-manager = {
-            sharedModules = [ hmModules.default ];
-          };
+      imports = [
+        #(modulesPath + "/installer/cd-dvd/installation-cd-minimal-new-kernel-no-zfs.nix")
+        #(modulesPath + "/installer/sd-card/sd-image-aarch64.nix")
+        (modulesPath + "/installer/sd-card/sd-image-raspberrypi.nix")
+        nixosModules.default
+        inputs.home-manager.nixosModules.default
+      ];
+    };
 
-          imports = [
-            #(modulesPath + "/installer/cd-dvd/installation-cd-minimal-new-kernel-no-zfs.nix")
-            #(modulesPath + "/installer/sd-card/sd-image-aarch64.nix")
-            (modulesPath + "/installer/sd-card/sd-image-raspberrypi.nix")
-            nixosModules.default
-            inputs.home-manager.nixosModules.default
-          ];
-        };
-
-      system = inputs.nixpkgs.lib.nixosSystem {
-        specialArgs = { inherit inputs flake; };
-        modules = [
-          common
-        ]
+    system = inputs.nixpkgs.lib.nixosSystem {
+      specialArgs = { inherit inputs flake; };
+      modules = [ common ]
         ++ snippets
         ++ builtins.attrValues nixosUsers
-        ++ builtins.attrValues nixosGroups;
-      };
-    in
-    system.config.system.build.sdImage;
+        ++ builtins.attrValues nixosGroups
+        ;
+    };
+  in system.config.system.build.sdImage;
 
-in
-builtins.mapAttrs host' host
+in builtins.mapAttrs host' host
diff --git a/flake.lock b/flake.lock
index 71dbc34..b70a3c3 100644
--- a/flake.lock
+++ b/flake.lock
@@ -22,32 +22,32 @@
         ]
       },
       "locked": {
-        "lastModified": 1757808926,
-        "narHash": "sha256-K6PEI5PYY94TVMH0mX3MbZNYFme7oNRKml/85BpRRAo=",
+        "lastModified": 1747688870,
+        "narHash": "sha256-ypL9WAZfmJr5V70jEVzqGjjQzF0uCkz+AFQF7n9NmNc=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "f21d9167782c086a33ad53e2311854a8f13c281e",
+        "rev": "d5f1f641b289553927b3801580598d200a501863",
         "type": "github"
       },
       "original": {
         "owner": "nix-community",
-        "ref": "release-25.05",
+        "ref": "release-24.11",
         "repo": "home-manager",
         "type": "github"
       }
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1757810152,
-        "narHash": "sha256-Vp9K5ol6h0J90jG7Rm4RWZsCB3x7v5VPx588TQ1dkfs=",
+        "lastModified": 1751274312,
+        "narHash": "sha256-/bVBlRpECLVzjV19t5KMdMFWSwKLtb5RyXdjz3LJT+g=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "9a094440e02a699be5c57453a092a8baf569bdad",
+        "rev": "50ab793786d9de88ee30ec4e4c24fb4236fc2674",
         "type": "github"
       },
       "original": {
         "owner": "nixos",
-        "ref": "nixos-25.05",
+        "ref": "nixos-24.11",
         "repo": "nixpkgs",
         "type": "github"
       }
diff --git a/flake.nix b/flake.nix
index 48864cb..5f5c238 100644
--- a/flake.nix
+++ b/flake.nix
@@ -1,9 +1,9 @@
 {
   inputs = {
-    nixpkgs.url = "github:nixos/nixpkgs/nixos-25.05";
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-24.11";
     hardware.url = "github:nixos/nixos-hardware";
     home-manager = {
-      url = "github:nix-community/home-manager/release-25.05";
+      url = "github:nix-community/home-manager/release-24.11";
       inputs.nixpkgs.follows = "nixpkgs";
     };
   };
diff --git a/group/nix.nix b/group/nix.nix
index ffcd441..0967ef4 100644
--- a/group/nix.nix
+++ b/group/nix.nix
@@ -1 +1 @@
-{ }
+{}
diff --git a/import/user.nix b/import/user.nix
index dd76452..0e5562d 100644
--- a/import/user.nix
+++ b/import/user.nix
@@ -1,34 +1,21 @@
 let
-  function =
-    name: value:
-    let
-      result = if builtins.isAttrs value then { ... }: value else value;
-      result' = builtins.trace "result ${name}=${builtins.typeOf result}" result;
-    in
+  function = name: value: let
+    result = if builtins.isAttrs value then {...}: value else value;
+    result' = builtins.trace "result ${name}=${builtins.typeOf result}" result;
+  in
     assert builtins.isFunction result';
     result;
 
-  config =
-    {
-      user ? { },
-      home-manager ? { },
-    }@set:
+  config = { user?{}, home-manager?{} }@set:
     builtins.mapAttrs function { inherit user home-manager; };
 
-in
-name: value:
-let
-  result =
-    if builtins.isFunction value then
-      config { user = value; }
-    else if
-      builtins.any (attr: builtins.hasAttr attr value) [
-        "user"
-        "home-manager"
-      ]
-    then
-      config value
-    else
-      config { user = value; };
-in
-result
+in name: value: let
+  result = if builtins.isFunction value
+    then 
+       config { user = value; }
+    else if builtins.any (attr: builtins.hasAttr attr value) [ "user" "home-manager" ]
+      then
+        config value
+      else
+        config { user = value; };
+in result
diff --git a/import/user/profile.nix b/import/user/profile.nix
index bdf2229..db2953a 100644
--- a/import/user/profile.nix
+++ b/import/user/profile.nix
@@ -1 +1,2 @@
 name: profile: profile
+
diff --git a/lib/flake.nix b/lib/flake.nix
index d607d90..4655a5d 100644
--- a/lib/flake.nix
+++ b/lib/flake.nix
@@ -1,81 +1,34 @@
 let
   scan = import ./scan.nix;
 
-  flake' =
-    self:
-    {
-      imports,
-      exports,
-      base,
-    }@schema:
-    { ... }@inputs:
-    { ... }@imports:
-    let
-      lib = {
-        inherit
-          scan
-          schema
-          inputs
-          imports
-          ;
-        extend = flake schema inputs imports;
-        new = flake { } { } { };
-        # TODO: override
-      };
-      convert = attr: value: value self inputs imports;
+  flake' = self: { imports, exports , base }@schema: { ... }@inputs: { ... }@imports: let
+    lib = {
+      inherit scan schema inputs imports;
+      extend = flake schema inputs imports;
+      new = flake {} {} {};
+      # TODO: override
+    };
+    convert = attr: value: value self inputs imports;
 
-      result = (builtins.mapAttrs convert schema.exports);
-    in
-    {
-      formatter = builtins.mapAttrs (_: pkgs: pkgs.nixfmt-tree) inputs.nixpkgs.legacyPackages;
-    }
-    // result
-    // {
-      lib = lib // (result.lib or { });
+    result = (builtins.mapAttrs convert schema.exports);
+  in result // { lib = lib // (result.lib or {}); };
+
+  flake =  { imports?{}, exports?{}, base?[] }@schema'old: { ... }@inputs'old: { ... }@imports'old: { ... }@inputs'new: base: let
+    schema = {
+      imports = (schema'old.imports or {}) // scan { base = base + "/import"; recursive = true; };
+      exports = (schema'old.exports or {}) // scan { base = base + "/export"; };
+      base = [ base ] ++ (schema'old.base or []);
     };
 
-  flake =
-    {
-      imports ? { },
-      exports ? { },
-      base ? [ ],
-    }@schema'old:
-    { ... }@inputs'old:
-    { ... }@imports'old:
-    { ... }@inputs'new:
-    base:
-    let
-      schema = {
-        imports =
-          (schema'old.imports or { })
-          // scan {
-            base = base + "/import";
-            recursive = true;
-          };
-        exports = (schema'old.exports or { }) // scan { base = base + "/export"; };
-        base = [ base ] ++ (schema'old.base or [ ]);
-      };
+    merge = attr: let
+      old = imports'old.${attr} or {};
+      new = imports'new.${attr} or {};
+    in builtins.mapAttrs (attr: _: (old.${attr} or []) ++ (new.${attr} or [])) (old//new);
 
-      merge =
-        attr:
-        let
-          old = imports'old.${attr} or { };
-          new = imports'new.${attr} or { };
-        in
-        builtins.mapAttrs (attr: _: (old.${attr} or [ ]) ++ (new.${attr} or [ ])) (old // new);
+    imports'new = builtins.mapAttrs (name: value: scan { base = base + "/${name}"; convert = name: content: [ (value name content) ]; }) schema.imports;
+    result = flake' result schema
+      (inputs'old // (builtins.removeAttrs inputs'new ["self"]))
+      (builtins.mapAttrs (attr: _: merge attr) schema.imports);
+  in result;
 
-      imports'new = builtins.mapAttrs (
-        name: value:
-        scan {
-          base = base + "/${name}";
-          convert = name: content: [ (value name content) ];
-        }
-      ) schema.imports;
-      result = flake' result schema (inputs'old // (builtins.removeAttrs inputs'new [ "self" ])) (
-        builtins.mapAttrs (attr: _: merge attr) schema.imports
-      );
-    in
-    result;
-
-in
-flake { } { } { }
+in flake {} {} {}
diff --git a/lib/host.nix b/lib/host.nix
new file mode 100644
index 0000000..b387ebc
--- /dev/null
+++ b/lib/host.nix
@@ -0,0 +1 @@
+self: 
diff --git a/lib/scan.nix b/lib/scan.nix
index dfb9eb1..d664df9 100644
--- a/lib/scan.nix
+++ b/lib/scan.nix
@@ -1,42 +1,23 @@
-{
-  base,
-  convert ? name: value: value,
-  recursive ? false,
-}:
+{ base, convert ? name: value: value, recursive ? false }:
 let
-  scan =
-    sub:
-    let
-      all = builtins.readDir (base + "/${builtins.concatStringsSep "/" sub}");
-      names = filter: builtins.filter filter (builtins.attrNames all);
-      nix =
-        name:
-        all.${name} == "regular"
-        && builtins.stringLength name > 4
-        && builtins.substring (builtins.stringLength name - 4) 4 name == ".nix";
-      dir = name: all.${name} == "directory";
-      files = map (name: sub ++ [ (builtins.substring 0 (builtins.stringLength name - 4) name) ]) (
-        names nix
-      );
-      dirs = builtins.concatLists (map (name: scan (sub ++ [ name ])) (names dir));
-    in
-    if recursive then files ++ dirs else files;
+  scan = sub: let
+    all = builtins.readDir (base + "/${builtins.concatStringsSep "/" sub}");
+    names = filter: builtins.filter filter (builtins.attrNames all);
+    nix = name: all.${name} == "regular" && builtins.stringLength name > 4 && builtins.substring (builtins.stringLength name - 4) 4 name == ".nix";
+    dir = name: all.${name} == "directory";
+    files = map (name: sub ++ [ (builtins.substring 0 (builtins.stringLength name - 4) name) ]) (names nix);
+    dirs = builtins.concatLists (map (name: scan (sub ++ [name])) (names dir));
+  in if recursive then files ++ dirs else files;
 
-  root = scan [ ];
+  root = scan [];
 
-  item =
-    relative:
-    let
-      name = builtins.concatStringsSep "/" relative;
-      absolute = base + "/${name}.nix";
-      content = import absolute;
-      value = convert name content;
-    in
-    {
-      inherit name value;
-    };
+  item = relative: let
+    name = builtins.concatStringsSep "/" relative;
+    absolute = base + "/${name}.nix";
+    content = import absolute;
+    value = convert name content;
+  in { inherit name value; };
 
   items = map item root;
 
-in
-if builtins.pathExists base then builtins.listToAttrs (map item root) else { }
+in if builtins.pathExists base then builtins.listToAttrs (map item root) else {}
diff --git a/user/root.nix b/user/root.nix
index ffcd441..0967ef4 100644
--- a/user/root.nix
+++ b/user/root.nix
@@ -1 +1 @@
-{ }
+{}