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configuration.nix

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+# Edit this configuration file to define what should be installed on
+# your system.  Help is available in the configuration.nix(5) man page
+# and in the NixOS manual (accessible by running ‘nixos-help’).
+
+{ config, pkgs, ... }:
+
+{
+  imports =
+    [ # Include the results of the hardware scan.
+      ./hardware-configuration.nix
+      ./stuff.nix
+      ./networking.nix
+      ./nvdia.nix
+    ];
+ 
+
+
+
+
+
+#virtualisation.libvirtd.enable = true;
+#programs.dconf.enable = true;
+
+
+  # Use the systemd-boot EFI boot loader.
+  boot.loader.systemd-boot.enable = true;
+  boot.loader.efi.canTouchEfiVariables = true;
+
+
+  # Set your time zone.
+   time.timeZone = "Asia/Kolkata";
+  
+  nix = {
+    package = pkgs.nixUnstable; # or versioned attributes like nix_2_4
+    extraOptions = ''
+      experimental-features = nix-command flakes
+    '';
+   };
+###
+ # services.xserver.videoDrivers = [ "nvidia" ];
+###
+  #for gpu  
+ # nixpkgs.config.allowUnfree = true;
+ # boot.extraModulePackages = [ pkgs.linuxPackages.nvidia_x11 ];
+#  boot.blacklistedKernelModules = [ "nouveau" "nvidia_drm" "nvidia_modeset" "nvidia" ];
+#  packages = [ pkgs.linuxPackages.nvidia_x11 ];
+
+
+
+nixpkgs.config = {
+  allowBroken = true;
+  allowUnfree = true;
+  pulseaudio = true; 
+ };
+nix.autoOptimiseStore = true;
+  # The global useDHCP flag is deprecated, therefore explicitly set to false here.
+  # Per-interface useDHCP will be mandatory in the future, so this generated config
+  # replicates the default behaviour.
+
+  # Configure network proxy if necessary
+  # networking.proxy.default = "http://user:password@proxy:port/";
+  # networking.proxy.noProxy = "127.0.0.1,localhost,internal.domain";
+
+
+  # Enable the X11 windowing system
+   services.xserver.enable = true;
+
+
+
+  services.xserver.displayManager.lightdm.enable = true;
+  services.xserver.windowManager = {
+    dwm.enable = true;
+    xmonad.enable = true;
+    xmonad.enableContribAndExtras = true;
+    xmonad.extraPackages = hpkgs: [
+    hpkgs.xmonad
+    hpkgs.xmonad-extras
+];
+};
+  
+  # Configure keymap in X11
+  # services.xserver.layout = "us";
+  # services.xserver.xkbOptions = "eurosign:e";
+
+  # Enable CUPS to print documents.
+  # services.printing.enable = true;
+
+  # Enable sound.
+   sound.enable = true;
+   hardware.pulseaudio.enable = true;
+   services.mpd.enable = true;
+
+   services.xserver.libinput.enable = true;
+
+ # Define a user account. Don't forget to set a password with ‘passwd’.
+   users.users.dumball = {
+     isNormalUser = true;
+     extraGroups = [ "wheel" ]; 
+   };
+
+   environment.systemPackages = with pkgs; [
+     vim # Do not forget to add an editor to edit configuration.nix! The Nano editor is also installed by default.
+     virt-manager
+     firefox
+     glib
+     wget 
+     wirelesstools
+     networkmanager
+     xclip
+     pciutils usbutils
+     git
+     neovim
+     alacritty
+     ##for xmonad
+     picom
+     scrot
+     trayer
+     emacs
+     ntfs3g
+     kbd
+     ripgrep
+     bc
+     gnumake
+   ];
+
+ programs.zsh.enable = true; 
+
+  # Some programs need SUID wrappers, can be configured further or are
+  # started in user sessions.
+  # programs.mtr.enable = true;
+  # programs.gnupg.agent = {
+  #   enable = true;
+  #   enableSSHSupport = true;
+  # };
+
+  # List services that you want to enable:
+
+  # Enable the OpenSSH daemon.
+  # services.openssh.enable = true;
+
+  # Open ports in the firewall.
+  # networking.firewall.allowedTCPPorts = [ ... ];
+  # networking.firewall.allowedUDPPorts = [ ... ];
+  # Or disable the firewall altogether.
+  # networking.firewall.enable = false;
+
+  # This value determines the NixOS release from which the default
+  # settings for stateful data, like file locations and database versions
+  # on your system were taken. It‘s perfectly fine and recommended to leave
+  # this value at the release version of the first install of this system.
+  # Before changing this value read the documentation for this option
+  # (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).
+  system.stateVersion = "21.05"; # Did you read the comment?
+
+}
+

hardware-configuration.nix

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+#867-43c8-b314-e254ce2ff77f 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, ... }:
+
+{
+  imports =
+    [ (modulesPath + "/installer/scan/not-detected.nix")
+    ];
+
+  boot.initrd.availableKernelModules = [ "nvme" "xhci_pci" "usb_storage" "sd_mod" ];
+  boot.initrd.kernelModules = [ ];
+  
+  boot.kernelModules = [ "kvm-amd" ];
+  boot.extraModulePackages = [ ];
+  boot.supportedFilesystems = [ "ntfs" ];
+
+
+ # fileSystems."home/dumball/mnt/home4" =
+   # { device = "/dev/disk/by-uuid/8e086312-a867-43c8-b314-e254ce2ff77f";
+   #   fsType = "btrfs";
+   #   options = ["rw" "uid=1000"  "compress-force=zstd:3" ];
+  #  };
+
+  
+
+  fileSystems."/" =
+    { device = "/dev/disk/by-uuid/a0848f1a-fc0c-424b-b9b9-e62ca8b61c14";
+      fsType = "ext4";
+    };
+
+  fileSystems."/boot" =
+    { device = "/dev/disk/by-uuid/4CF2-4701";
+      fsType = "vfat";
+    };
+     
+   fileSystems."/home2" =
+    { device = "/dev/disk/by-uuid/B6CAFD08CAFCC5A1";
+      fsType = "ntfs"; 
+      options = [ "rw" "uid=1000"];
+    };
+    
+    fileSystems."/mnt/home3" =
+    { device = "/dev/disk/by-uuid/1A784CA0784C7C8F";
+      fsType = "ntfs";
+      options = [ "rwx" "uid=1000"];
+    };  
+    swapDevices = [ ];
+
+      zramSwap = {
+    enable = true;
+    algorithm = "lz4";
+    memoryPercent = 30;
+    priority = -1;
+  };
+
+}

networking.nix

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+{ config, pkgs, ... }:
+{
+
+ networking =  {
+   hostName = "dumball"; # Define your hostname.
+   wireless.enable = true; # Enables wireless support via wpa_supplicant.
+   wireless.interfaces = ["wlp4s0"];
+
+   wireless.networks.Akshat.pskRaw = "4fb4def18646584f6e6bea59c72173c392c4b09faf71e5d1c1e1ebafb6e8bb82";
+   #networking.networkmanager.enable = true;
+   interfaces = {
+   wlp4s0 = {
+   useDHCP = true;
+   ipv4.addresses = [{
+          prefixLength = 24;
+          address = "223.178.248.231";
+     }];
+   
+     };
+
+   };
+   
+ };
+
+
+  # Open ports in the firewall.
+  # networking.firewall.allowedTCPPorts = [ ... ];
+  # networking.firewall.allowedUDPPorts = [ ... ];
+  # Or disable the firewall altogether.
+  # networking.firewall.enable = false;
+
+}
+
+

nvdia.nix

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+{config, pkgs, ... }:
+let
+   nvidia-offload = pkgs.writeShellScriptBin "nvi" ''
+    export __NV_PRIME_RENDER_OFFLOAD=1
+    export __NV_PRIME_RENDER_OFFLOAD_PROVIDER=NVIDIA-G0
+    export __GLX_VENDOR_LIBRARY_NAME=nvidia
+    export __VK_LAYER_NV_optimus=NVIDIA_only
+    exec -a "$0" "$@"
+  '';
+in
+  {
+    environment.systemPackages = with pkgs; [
+      nvidia-offload
+    ];
+    hardware = {
+      opengl = {
+        driSupport32Bit = true;
+      #  extraPackages32 = with pkgs.pkgsi686Linux; [ libva ];
+        enable = true;
+      };
+      nvidia = {
+        prime = {
+    #      sync.enable = true;
+          offload = { enable = true; };
+          amdBusId = "PCI:5:0:0";
+          nvidiaBusId = "PCI:1:0:1";
+        };
+        modesetting = { enable = true; };
+        powerManagement = {
+          enable = true;
+          finegrained = true;
+        };
+      };
+    };
+    services.xserver = {
+      videoDrivers = [ "nvidia" ];
+      dpi = 96;
+    };
+  }

stuff.nix

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+{lib, config, agenix, pkgs, ...}:
+
+{
+ fonts.fonts = with pkgs; [
+    fira-mono
+    lohit-fonts.devanagari
+    lohit-fonts.gurmukhi
+    nerdfonts
+    font-awesome
+    monoid
+    office-code-pro
+    noto-fonts-cjk
+  ];
+
+ users.users.dumball = {
+    isNormalUser = true;
+    shell = pkgs.zsh;
+    home = "/home/dumball";
+    extraGroups = [ "wheel" "adbusers" "video" "libvirtd" "docker" ];
+  };
+
+  gtk.iconCache.enable = true;
+
+}