{ config, pkgs, ... }:

{
  imports =
    [ # Include the results of the hardware scan.
      ./hardware-configuration.nix
    ];

  # System

  boot = {
    loader = {
      grub.enable = false;
      gummiboot.enable = true;
      generationsDir = {
        enable = false;
        copyKernels = false;
      };
    };
    kernel = {
      sysctl = {
        "kernel.nmi_watchdog" = 0; # Disable watchdog
        "vm.swappiness" = 0; # Avoid swapping as much as possible
        "vm.laptop_mode" = 5; # Use laptop mode (Knob at 5)
        "vm.dirty_writeback_centisecs" = 6000; # Aggregate disk IO
      };
    };
  };

  # SSD
  boot.tmpOnTmpfs = true; # save some writes
  fileSystems."/".options = "discard,noatime";

  time.timeZone = "Europe/Rome";

  virtualisation.virtualbox.host.enable = true;

  # Networking

  networking.hostName = "warren";
  networking.hostId = "6bc261fc";
  networking.firewall.enable = false;
  networking.wireless.enable = true;
  networking.connman.enable = true;

  i18n = {
    consoleFont = "lat9w-16";
    consoleKeyMap = "it";
    defaultLocale = "it_IT.UTF-8";
  };

  # Packages

  nixpkgs.config = {
    allowUnfree = true;
    packageOverrides = pkgs: {
      ncmpcpp = pkgs.ncmpcpp.override {
        outputsSupport = true;
        visualizerSupport = true;
        clockSupport = true;
      };
      chromium = pkgs.chromium.override {
        enablePepperFlash = true;
      };
    };
  };

  environment.systemPackages = with pkgs; [
    # Development
    atom git nodejs
    (haskellPackages.ghcWithPackages (hs: with hs; [ cabal-install ] ))
    # Libs and Tools
    xsel urxvt_perls xclip python34Packages.udiskie encfs
    # Desktop Environment helpers
    dmenu bar i3lock sxhkd
    # Games
    minecraft steam dwarf_fortress
    # Applications
    neovim ranger weechat bc w3m gnupg zathura go14Packages.ipfs.bin
    tmux htop rxvt_unicode pandoc mosh ncdu cv pv tree screenfetch
    scrot iotop iftop unzip zip p7zip
    # Desktop Applications
    chromium libreoffice gparted
    # Media
    beets mpd mpc_cli ncmpcpp popcorntime mpv
    # Drivers, file systems and other compatibility-aimed packages
    ntfs3g exfat utillinuxCurses gptfdisk encfs xlibs.xbacklight
    acpi powertop
  ];

  fonts = {
    enableFontDir = true;
    enableGhostscriptFonts = true;
    fonts = with pkgs; [
      gohufont
    ];
  };

  # Services

  services = {

    # SSH
    openssh = {
      enable = true;
      permitRootLogin = "no";
      passwordAuthentication = false;
    };

    # Desktop Environment
    xserver = {
      enable = true;
      layout = "it";
      windowManager.bspwm.enable = true;
      desktopManager.xterm.enable = false;
      desktopManager.default = "none";
      windowManager.default = "bspwm";
      displayManager.slim.theme = pkgs.fetchurl {
        url    = "https://github.com/rnhmjoj/nix-slim/archive/0.2.0.tar.gz";
        sha256 = "08m6ks6crdyr02ll50gy3vpn3rzq6rp5jm2bli526r432xacdmj1";
      };
      displayManager.desktopManagerHandlesLidAndPower = false;
      synaptics = {
        enable = true;
      };
    };

    mpd = {
      enable = true;
      user = "fazo";
      group = "users";
      dataDir = "/home/fazo/.config/mpd";
      musicDirectory = "/home/fazo/Music";
      extraConfig = ''
        audio_output {
          type "fifo"
          name "FIFO"
          path "/tmp/mpd.fifo"
          format "44100:16:1"
        }
        audio_output {
          type "alsa"
          name "warren"
          mixer_type "software"
        }
      '';
    };

    redshift = {
      enable = true;
      latitude = "9.6";
      longitude = "45.47";
    };

    transmission = {
      enable = false;
      settings = {
        download-dir = "/mnt/Dati/Download/";
      };
    };

    syncthing = {
      enable = true;
      user = "fazo";
      dataDir = "/home/fazo/.config/syncthing";
    };
  };

  # Custom Services

  systemd.services.ipfs = {
    enable = false;
    after = [ "network.target" ];
    wantedBy = [ "multi-user.target" ];
    path = [ pkgs.bash pkgs.fuse ];
    serviceConfig = {
      User = "fazo";
      ExecStart = "${pkgs.go14Packages.ipfs.bin}/bin/ipfs daemon --init";
    };
  };

  # User environment

  programs.zsh = {
    enable = true;
    shellInit = "export ZDOTDIR=~/.config/zsh";
  };

  users.extraUsers.fazo = {
    isNormalUser = true;
    extraGroups = [ "wheel" "transmission" "vboxusers" ];
    uid = 1000;
    shell = "/run/current-system/sw/bin/zsh";
    openssh.authorizedKeys.keys = [ "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDIqHaL0uH1ko/jLI3JeetD4bITUF34IE9HTEvF2Go8JYbhk3YSsG0/EoNu8dhA35S45Y7TXUk/K0axcqmFUePVwY271b7L+9I7/ehUg1wHOaNLCf/ueAyRfo5ZUHuH1YnTg9TinwVi0dynjVMaaVDR1YWVgzuw0KTEDW5em5m+jRbDvFrrq72D2GD/fYqkc2Z/cmnRijMi26PCF1xTq4g6BlIUYloCN+ZlDRvkSWiqCcFD3a/QOZXsUBVg80K4QrHVwj4+Bu2M1KDLhmW+8fzMkbwzKumUFt9SwcQh5Tq/MQfzSWOO2wtn1sys0BDKGazJwn9gMFNkcFbRsD5Uqcgh fazo@mac.lan" ];
  };

}