Remove unstable channel

configuration.nix

@@ -4,12 +4,6 @@
 
 { config, lib, pkgs, ... }:
 
-let unstable = import (builtins.fetchTarball {
-  name = "nixos-unstable-2024-12-08";
-  url = "https://github.com/NixOS/nixpkgs/archive/868be2c9df2ffdb40b6aee3d156f1df603555539.tar.gz";
-  sha256 = "0s7xzhv4a98j6kbas1q4pd3ln1l5hfamp4db4wx5mif0110n5scv";
-}) {};
-in
 {
   nix.settings.experimental-features = [ "nix-command" "flakes" ];
   imports =
@@ -69,13 +63,8 @@ in
   # Enable CUPS to print documents.
   services.printing.enable = false;
 
-  # Enable sound.
-  sound.enable = true;
-  hardware.pulseaudio.enable = true;
-  hardware.pulseaudio.extraConfig = "load-module module-switch-on-connect";
-
   # Enable touchpad support (enabled default in most desktopManager).
-  services.xserver.libinput.enable = true;
+  services.libinput.enable = true;
 
   # Define a user account. Don't forget to set a password with ‘passwd’.
   users.users.ekzyis = {
@@ -139,9 +128,9 @@ in
     brave
     vscodium
     neovim
-    unstable.docker-compose
+    docker-compose
     nodejs
-    unstable.signal-desktop
+    signal-desktop
     telegram-desktop
     rustup gcc pkg-config
     gimp
@@ -160,13 +149,14 @@ in
     file
     gnumake
     awscli2
-    unstable.code-cursor
+    code-cursor
     pavucontrol
     libnotify
+    alsa-tools
   ];
 
   fonts.packages = with pkgs; [
-    hack-font noto-fonts noto-fonts-cjk noto-fonts-color-emoji
+    hack-font noto-fonts noto-fonts-cjk-sans noto-fonts-color-emoji
     (nerdfonts.override { fonts = [ "Hack" ]; })
   ];