diff --git a/hosts/dunamis/configuration.nix b/hosts/dunamis/configuration.nix
index 9e467fc..aa31ea2 100644
--- a/hosts/dunamis/configuration.nix
+++ b/hosts/dunamis/configuration.nix
@@ -1,6 +1,7 @@
 {
   config,
   inputs,
+  pkgs,
   ...
 }: {
   imports = with inputs; [
@@ -22,6 +23,11 @@
   time.timeZone = "Europe/Kyiv";
 
   desktop.niri.enable = true;
+  # TODO: make a module for autologin
+  services.greetd.settings.initial_session = {
+    user = "user";
+    command = "${pkgs.niri}/bin/niri-session";
+  };
 
   module = {
     config = {
diff --git a/modules/nixos/desktop/common/default.nix b/modules/nixos/desktop/common/default.nix
new file mode 100644
index 0000000..00993b4
--- /dev/null
+++ b/modules/nixos/desktop/common/default.nix
@@ -0,0 +1,16 @@
+{config, ...}: {
+  imports = [
+    ./gnome-keyring.nix
+    ./greeter.nix
+    ./pam-rtprio.nix
+    ./pipewire.nix
+  ];
+  fonts.fontDir.enable = true;
+  security = {
+    pam = {
+      services.greetd.enableGnomeKeyring = config.services.greetd.enable && config.services.gnome.gnome-keyring.enable;
+    };
+  };
+  services.udisks2.enable = true;
+  programs.dconf.enable = true;
+}
diff --git a/modules/nixos/desktop/common/gnome-keyring.nix b/modules/nixos/desktop/common/gnome-keyring.nix
new file mode 100644
index 0000000..246b9c7
--- /dev/null
+++ b/modules/nixos/desktop/common/gnome-keyring.nix
@@ -0,0 +1,25 @@
+{
+  lib,
+  pkgs,
+  config,
+  ...
+}: let
+  inherit (lib) mkEnableOption mkIf;
+  cfg = config.module.desktop.gnome-keyring;
+in {
+  options = {
+    module.desktop.gnome-keyring.enable = mkEnableOption "enable gnome keyring";
+  };
+
+  config = mkIf cfg.enable {
+    environment.systemPackages = with pkgs; [
+      gcr_4
+      libsecret
+    ];
+    # programs.seahorse.enable = true;
+    services.gnome.gnome-keyring.enable = true;
+    xdg.portal.config.common = {
+      "org.freedesktop.impl.portal.Secret" = ["gnome-keyring"];
+    };
+  };
+}
diff --git a/modules/nixos/desktop/common/greeter.nix b/modules/nixos/desktop/common/greeter.nix
new file mode 100644
index 0000000..0e18ef9
--- /dev/null
+++ b/modules/nixos/desktop/common/greeter.nix
@@ -0,0 +1,48 @@
+{
+  lib,
+  pkgs,
+  config,
+  ...
+}: let
+  inherit (lib) mkOption mkIf getExe types mkMerge;
+  cfg = config.module.desktop;
+in {
+  options = {
+    module.desktop.displayManager = mkOption {
+      default = "greetd";
+      type = types.enum [
+        "cosmic"
+        "gdm"
+        "greetd"
+        "sddm"
+      ];
+    };
+  };
+
+  config = mkMerge [
+    (mkIf (cfg.displayManager == "cosmic") {
+      services.displayManager.cosmic-greeter.enable = true;
+    })
+    (mkIf (cfg.displayManager == "gdm") {
+      services.xserver.displayManager.gdm.enable = true;
+    })
+    (mkIf (cfg.displayManager == "greetd") {
+      programs.regreet.enable = true;
+      services.greetd = {
+        enable = true;
+        vt = 1;
+        settings = {
+          default_session = {
+            command = "${getExe pkgs.cage} -s -m last -- ${getExe pkgs.greetd.regreet}";
+          };
+        };
+      };
+    })
+    (mkIf (cfg.displayManager == "sddm") {
+      services.displayManager.sddm = {
+        enable = true;
+        wayland.enable = true;
+      };
+    })
+  ];
+}
diff --git a/modules/nixos/desktop/common/pam-rtprio.nix b/modules/nixos/desktop/common/pam-rtprio.nix
new file mode 100644
index 0000000..9d91437
--- /dev/null
+++ b/modules/nixos/desktop/common/pam-rtprio.nix
@@ -0,0 +1,10 @@
+{
+  security.pam.loginLimits = [
+    {
+      domain = "@users";
+      item = "rtprio";
+      type = "-";
+      value = -1;
+    }
+  ];
+}
diff --git a/modules/nixos/desktop/cosmic.nix b/modules/nixos/desktop/cosmic.nix
index aff4f9b..dae4da9 100644
--- a/modules/nixos/desktop/cosmic.nix
+++ b/modules/nixos/desktop/cosmic.nix
@@ -16,17 +16,11 @@ in {
       mkEnableOption "enable cosmic desktop";
   };
   config = mkIf cfg.enable {
-    environment.sessionVariables.COSMIC_DATA_CONTROL_ENABLED = 1;
+    module.desktop.displayManager = "cosmic";
     sound.pipewire.enable = true;
-    services = {
-      desktopManager.cosmic.enable = true;
-      displayManager.cosmic-greeter.enable = true;
-      gnome.gnome-keyring.enable = true;
-      dbus = {
-        apparmor = "enabled";
-        implementation = "broker";
-      };
-    };
+
+    environment.sessionVariables.COSMIC_DATA_CONTROL_ENABLED = 1;
+    services.desktopManager.cosmic.enable = true;
     systemd = {
       packages = [pkgs.observatory];
       services.monitord.wantedBy = ["multi-user.target"];
@@ -37,10 +31,7 @@ in {
         xdg-desktop-portal-cosmic
         xdg-desktop-portal-gtk
       ];
-      config.cosmic = {
-        default = ["cosmic" "gtk"];
-        "org.freedesktop.impl.portal.Secret" = ["gnome-keyring"];
-      };
+      config.cosmic.default = ["cosmic" "gtk"];
     };
   };
 }
diff --git a/modules/nixos/desktop/default.nix b/modules/nixos/desktop/default.nix
index 3140e4a..ca85196 100644
--- a/modules/nixos/desktop/default.nix
+++ b/modules/nixos/desktop/default.nix
@@ -1,6 +1,6 @@
 {
   imports = [
-    ./common/pipewire.nix
+    ./common
     ./cosmic.nix
     ./gnome.nix
     ./hyprland.nix
diff --git a/modules/nixos/desktop/gnome.nix b/modules/nixos/desktop/gnome.nix
index 7aec45b..794ea0c 100644
--- a/modules/nixos/desktop/gnome.nix
+++ b/modules/nixos/desktop/gnome.nix
@@ -11,19 +11,12 @@ in {
       mkEnableOption "enable gnome desktop";
   };
   config = mkIf cfg.enable {
+    module.desktop.displayManager = "gdm";
     sound.pipewire.enable = true;
+
     services.xserver = {
       enable = true;
-      displayManager.gdm.enable = true;
       desktopManager.gnome.enable = true;
     };
-    programs.dconf.enable = true;
-    programs.seahorse.enable = true;
-    services.gnome.gnome-keyring.enable = true;
-    services.udisks2.enable = true;
-    services.dbus = {
-      apparmor = "enabled";
-      implementation = "broker";
-    };
   };
 }
diff --git a/modules/nixos/desktop/hyprland.nix b/modules/nixos/desktop/hyprland.nix
index 8325dc9..9d702db 100644
--- a/modules/nixos/desktop/hyprland.nix
+++ b/modules/nixos/desktop/hyprland.nix
@@ -4,8 +4,9 @@
   pkgs,
   lib,
   ...
-}:
-with lib; let
+}: let
+  inherit (lib) mkEnableOption mkIf;
+  inherit (perSystem) hyprland;
   cfg = config.desktop.hyprland;
 in {
   options = {
@@ -13,65 +14,23 @@ in {
       mkEnableOption "enable hyprland desktop";
   };
   config = mkIf cfg.enable {
+    module.desktop.displayManager = "greetd";
+    module.desktop.gnome-keyring.enable = true;
     sound.pipewire.enable = true;
+
     programs.hyprland = {
       enable = true;
-      package = perSystem.hyprland.hyprland;
-      portalPackage = perSystem.hyprland.xdg-desktop-portal-hyprland;
-    };
-    environment.systemPackages = with pkgs; [
-      brightnessctl
-      gcr_4
-    ];
-    fonts.fontDir.enable = true;
-    security.pam = {
-      services.hyprlock = {};
-      loginLimits = [
-        {
-          domain = "@users";
-          item = "rtprio";
-          type = "-";
-          value = 1;
-        }
-      ];
-    };
-    services = {
-      gnome.gnome-keyring.enable = true;
-      udisks2.enable = true;
-      dbus = {
-        apparmor = "enabled";
-        implementation = "broker";
-      };
-    };
-    programs = {
-      dconf.enable = true;
-      seahorse.enable = true;
+      package = hyprland.hyprland;
+      portalPackage = hyprland.xdg-desktop-portal-hyprland;
     };
+    security.pam.services.hyprlock = {};
     xdg.portal = {
       enable = true;
       extraPortals = [
-        perSystem.hyprland.xdg-desktop-portal-hyprland
+        hyprland.xdg-desktop-portal-hyprland
         pkgs.xdg-desktop-portal-gtk
       ];
-      config.common.default = [
-        "hyprland"
-        "gtk"
-      ];
-    };
-
-    programs.regreet.enable = true;
-    services.greetd = {
-      enable = true;
-      vt = 6;
-      settings = {
-        default_session = {
-          command = "${pkgs.cage}/bin/cage -s -m last -- ${pkgs.greetd.regreet}/bin/regreet";
-        };
-        initial_session = {
-          user = "user";
-          command = "Hyprland";
-        };
-      };
+      config.hyprland.default = ["hyprland" "gtk"];
     };
   };
 }
diff --git a/modules/nixos/desktop/niri.nix b/modules/nixos/desktop/niri.nix
index fe0fe9f..0820def 100644
--- a/modules/nixos/desktop/niri.nix
+++ b/modules/nixos/desktop/niri.nix
@@ -4,7 +4,7 @@
   lib,
   ...
 }: let
-  inherit (lib) mkIf mkEnableOption getExe;
+  inherit (lib) mkIf mkEnableOption;
   cfg = config.desktop.niri;
 in {
   options = {
@@ -12,62 +12,22 @@ in {
       mkEnableOption "enable niri desktop";
   };
   config = mkIf cfg.enable {
+    module.desktop.displayManager = "greetd";
+    module.desktop.gnome-keyring.enable = true;
     sound.pipewire.enable = true;
+
+    security = {
+      soteria.enable = true; # polkit agent in rust
+      pam.services.gtklock = {};
+    };
     programs.niri.enable = true; # wayland compositor in rust
-    environment.systemPackages = with pkgs; [
-      brightnessctl
-      gcr_4
-    ];
-    fonts.fontDir.enable = true;
-    security.soteria.enable = true;
-    security.pam = {
-      services.greetd.enableGnomeKeyring = true;
-      services.gtklock = {};
-      loginLimits = [
-        {
-          domain = "@users";
-          item = "rtprio";
-          type = "-";
-          value = 1;
-        }
-      ];
-    };
-    services = {
-      gnome.gnome-keyring.enable = true;
-      udisks2.enable = true;
-      dbus = {
-        apparmor = "enabled";
-        implementation = "broker";
-      };
-    };
-    programs = {
-      dconf.enable = true;
-      seahorse.enable = true;
-    };
     xdg.portal = {
       enable = true;
       extraPortals = with pkgs; [
         xdg-desktop-portal-gnome
         xdg-desktop-portal-gtk
       ];
-      config.niri = {
-        default = ["gnome" "gtk"];
-        "org.freedesktop.impl.portal.Secret" = ["gnome-keyring"];
-      };
-    };
-    programs.regreet.enable = true;
-    services.greetd = {
-      enable = true;
-      vt = 6;
-      settings = {
-        default_session = {
-          command = "${pkgs.cage}/bin/cage -s -m last -- ${getExe pkgs.greetd.regreet}";
-        };
-        initial_session = {
-          user = "user";
-          command = "${pkgs.niri}/bin/niri-session";
-        };
-      };
+      config.niri.default = ["gnome" "gtk"];
     };
   };
 }
diff --git a/modules/nixos/desktop/plasma.nix b/modules/nixos/desktop/plasma.nix
index 2f222fe..9cc28bb 100644
--- a/modules/nixos/desktop/plasma.nix
+++ b/modules/nixos/desktop/plasma.nix
@@ -13,27 +13,13 @@ in {
   options = {
     desktop.plasma = {
       enable = mkEnableOption "enable plasma desktop";
-      # sddmEnable = mkEnableOption "enable simple display manager";
     };
   };
   config = mkIf cfg.enable {
-    stylix.targets.qt.enable = mkDefault false;
-    environment.systemPackages = with pkgs; [gcr_4];
-    services = {
-      gnome.gnome-keyring.enable = true;
-      desktopManager.plasma6.enable = true;
-      displayManager.sddm = {
-        enable = true; # cfg.sddmEnable;
-        wayland.enable = true;
-      };
-    };
-    fonts.fontDir.enable = true;
+    module.desktop.displayManager = "sddm";
+    sound.pipewire.enable = true;
 
-    xdg.portal = {
-      enable = true;
-      config.common = {
-        "org.freedesktop.impl.portal.Secret" = ["gnome-keyring"];
-      };
-    };
+    services.desktopManager.plasma6.enable = true;
+    stylix.targets.qt.enable = mkDefault false;
   };
 }