diff --git a/home-manager/modules/hypr/hypr.nix b/home-manager/modules/hypr/hypr.nix
index 2402961..dba92ec 100644
--- a/home-manager/modules/hypr/hypr.nix
+++ b/home-manager/modules/hypr/hypr.nix
@@ -2,9 +2,10 @@
 
 {
   home.packages = with pkgs; [ hyprland ];
-  programs.waybar = { enable = true; };
-  programs.hyprpanel.enable = true;
-  programs.hyprpanel.systemd.enable = true;
+  programs.hyprpanel = {
+    enable = true;
+    systemd.enable = true;
+  };
   programs.fuzzel.enable = true;
 
   # wayland.windowManager.hyprland = {
diff --git a/home-manager/modules/kitty.nix b/home-manager/modules/kitty.nix
index 8347e4c..fd025a0 100644
--- a/home-manager/modules/kitty.nix
+++ b/home-manager/modules/kitty.nix
@@ -21,8 +21,8 @@
       confirm_os_window_close = 0;
       map = ''
         ctrl+c copy_or_interrupt 
-        ctrl+v paste
-        ctrl+shift+v paste
+        ctrl+v paste_from_clipboard
+        ctrl+shift+v paste_from_clipboard
       '';
 
       shell = "${pkgs.zsh}/bin/zsh";
diff --git a/home-manager/modules/programs.nix b/home-manager/modules/programs.nix
index 64a4b43..c851473 100644
--- a/home-manager/modules/programs.nix
+++ b/home-manager/modules/programs.nix
@@ -2,12 +2,16 @@
 
 {
   home.packages = with pkgs; [
-    # firefox # in nixos config
     telegram-desktop
     vscode
-    spotify-player
+    spotify
+    brightnessctl
   ];
 
+  programs.direnv.enable = true;
+  programs.direnv.nix-direnv.enable = true;
+  programs.direnv.enableZshIntegration = true;
+
   imports = [ inputs.zen-browser.homeModules.twilight ];
   programs.zen-browser = {
     enable = true;
diff --git a/home-manager/modules/zsh/zsh.nix b/home-manager/modules/zsh/zsh.nix
index 7743ac1..d62263d 100644
--- a/home-manager/modules/zsh/zsh.nix
+++ b/home-manager/modules/zsh/zsh.nix
@@ -68,6 +68,9 @@
                 (pgrep -x ".AmneziaVPN-ser" > /dev/null 2>&1 || sudo AmneziaVPN-service > /dev/null 2>&1 &) &
         AmneziaVPN > /dev/null 2>&1 &
       ''; # i don't know any good ways for it.
+      mkenv = ''
+        echo "use nix" > .envrc && touch default.nix && direnv allow && echo "✓ env created"'';
+
     };
 
     initContent = ''
diff --git a/nixos/custom.nix b/nixos/custom.nix
index 8188d46..f096a1a 100644
--- a/nixos/custom.nix
+++ b/nixos/custom.nix
@@ -96,6 +96,7 @@
     consoleLogLevel = 3;
     initrd.verbose = false;
     kernelModules = [ "tun" "lenovo-legion-module" ]; # for VPN
+    kernelPackages = pkgs.linuxPackages_latest;
     extraModulePackages = with config.boot.kernelPackages;
       [ lenovo-legion-module ];
     kernelParams = [
diff --git a/nixos/low-power.nix b/nixos/low-power.nix
new file mode 100644
index 0000000..f35eb90
--- /dev/null
+++ b/nixos/low-power.nix
@@ -0,0 +1,104 @@
+{ inputs, config, lib, pkgs, ... }: {
+  #@# modules/low-power.nix: setup to maximize on-battery lifetime
+  #@#   contains:
+  options = {
+    nyx.low-power.enable =
+      lib.mkEnableOption "enables low profile optimizations to reduce watt use";
+  };
+  config = lib.mkIf config.nyx.low-power.enable {
+    #@#   * steam, lutris etc.
+    boot = {
+      kernelParams = [
+        "pcie_aspm.policy=powersupersave"
+        "amd_pstate=passive" # use schedutil scaling for Ryzen 7940HS
+        "mitigations=auto"
+      ];
+
+      extraModprobeConfig = ''
+        # AMD iGPU tuning
+        options amdgpu dc=1
+        options amdgpu deep_color=1
+        options amdgpu aspm=1
+        # Force dGPU off by default to save power (only use when explicitly requested)
+        options amdgpu runpm=1
+      '';
+    };
+
+    networking.networkmanager.wifi.powersave = true;
+    programs.sway.xwayland.enable = false;
+    services.pipewire.jack.enable = false;
+    powerManagement.enable = true;
+    powerManagement.cpuFreqGovernor = "schedutil";
+    services.power-profiles-daemon.enable = false;
+
+    services.tlp = {
+      enable = true;
+      settings = {
+        TLP_DEFAULT_MODE = "BAT";
+        CPU_SCALING_GOVERNOR_ON_AC = "schedutil";
+        CPU_SCALING_GOVERNOR_ON_BAT = "schedutil";
+        CPU_ENERGY_PERF_POLICY_ON_AC = "balance_power";
+        CPU_ENERGY_PERF_POLICY_ON_BAT = "power";
+        PCIE_ASPM_ON_AC = "default";
+        PCIE_ASPM_ON_BAT = "powersupersave";
+        RUNTIME_PM_ON_AC = "auto";
+        RUNTIME_PM_ON_BAT = "auto";
+        USB_AUTOSUSPEND = "1";
+        WIFI_PWR_ON_AC = "on";
+        WIFI_PWR_ON_BAT = "on";
+        DEVICES_TO_DISABLE_ON_BAT = "bluetooth";
+        DEVICES_TO_DISABLE_ON_STARTUP = "bluetooth";
+        DISK_IDLE_SECS_ON_AC = "60";
+        DISK_IDLE_SECS_ON_BAT = "30";
+        SATA_LINKPWR_ON_AC = "med_power_with_dipm";
+        SATA_LINKPWR_ON_BAT = "min_power";
+        SOUND_POWER_SAVE_ON_AC = "1";
+        SOUND_POWER_SAVE_ON_BAT = "1";
+        PLATFORM_PROFILE_ON_AC = "balanced";
+        PLATFORM_PROFILE_ON_BAT = "low-power";
+      };
+    };
+    powerManagement.powertop.enable = true;
+    services.thermald.enable = true;
+
+    services.switcherooControl.enable = true;
+    hardware = {
+      opengl = {
+        enable = true;
+        extraPackages = with pkgs; [ mesa ];
+      };
+      amdgpu.overdrive.enable = lib.mkForce false;
+    };
+
+    services.printing.enable = false;
+    hardware.bluetooth.enable = lib.mkForce false;
+    services.avahi.enable = false;
+    services.fwupd.enable = true;
+    services.locate.enable = false;
+    services.journald.extraConfig = ''
+      SystemMaxUse=200M
+      RuntimeMaxUse=100M
+      MaxRetentionSec=1month
+    '';
+    # programs.ssh.startAgent = true;
+    services.openssh.enable = lib.mkForce false;
+    # libvirt
+    # nsncd (?)
+    # 
+    services.tailscale.enable = lib.mkForce false;
+    programs.java.enable = lib.mkForce false;
+    services.upower.enable = lib.mkForce false;
+    services = {
+      xserver.windowManager.fvwm2.gestures = lib.mkForce false;
+      libinput.enable = lib.mkForce false;
+    };
+    hardware.opentabletdriver.enable = lib.mkForce false;
+    programs.kdeconnect.enable = lib.mkForce false;
+    services.mullvad-vpn.enable = lib.mkForce false;
+
+    virtualisation = {
+      docker.enable = lib.mkForce false;
+      libvirtd.enable = lib.mkForce false;
+    };
+  };
+}