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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, lib, pkgs, ... }:

{
  imports =
    [ # Include the results of the hardware scan.
      ./hel/hw.nix
      ./hel/boot.nix
      ./users.nix
      ./custom/zsh.nix
      ./custom/tinc/def.nix
      ./custom/uucp.nix
    ];

  system.stateVersion = "16.09";

  networking = {
    hostName = "hel";
    
    firewall = {
      enable = true;
      allowedTCPPorts = [ 22 # ssh
                        ];
    };

    networkmanager = {
      enable = true;
    };
  };

  powerManagement.enable = true;

  i18n = {
    consoleFont = "lat9w-16";
    consoleKeyMap = "dvp";
    defaultLocale = "en_US.UTF-8";
  };

  boot.kernelPackages = pkgs.linuxPackages_latest;

  environment.systemPackages = with pkgs; [
    git
    slock
    shadow
    (callPackage ./custom/thinklight.nix { thinklight = "kbd_backlight"; })
    (callPackage ./utils/nix/rebuild-system.nix {})
  ];

  # nixpkgs.config.packageOverrides = pkgs: rec {
  #   libqmi = pkgs.stdenv.lib.overrideDerivation pkgs.libqmi (old: {
  #     src = pkgs.fetchgit {
  #       url = "git://anongit.freedesktop.org/libqmi";
  # 	rev = "7a426340c9238f743b4641096ea86b89dd503041";
  # 	sha256 = "1lnr049hjakp864kq2lql04nfraaxgfh88rjayc7a7x993s75fzs";
  #     };

  #     buildInputs = old.buildInputs ++ (with pkgs; [ libmbim automake114x ]);
  #   });
  #   libmbim = pkgs.stdenv.lib.overrideDerivation pkgs.libmbim (old: {
  #     src = pkgs.fetchgit {
  #       url = "git://anongit.freedesktop.org/libmbim/libmbim";
  # 	rev = "c5ed53cfabc0d7ba20dea1047db718f2ca0a6d80";
  # 	sha256 = "07fy120703rwpf7p0d8fdbrswx9jn1ln8wnnn7zkwwjq9mgr6ppp";
  #     };
      
  #     buildInputs = old.buildInputs ++ (with pkgs; [ autoconf automake gnome.gtkdoc libtool pkgconfig ]);

  #     preConfigure = "./autogen.sh";
  #   });
  # };

  nixpkgs.config.allowUnfree = true;

  services = {
    logind.extraConfig = ''
      HandleLidSwitch=suspend
    '';

    openssh.enable = true;

    xserver = {
      enable = true;
      
      layout = "us";
      xkbVariant = "dvp";
      xkbOptions = "compose:caps";
      
      displayManager.slim = {
        enable = true;
        defaultUser = "gkleen";
      };

      desktopManager = {
        default = "none";
        xterm.enable = false;
      };

      windowManager = {
        default = "xmonad";
        xmonad = {
          enable = true;
          enableContribAndExtras = true;
          extraPackages = haskellPackages: (with haskellPackages; [ hostname ]);
        };
      };

      wacom.enable = true;
      multitouch.enable = true;

      dpi = 210;
    };

    ntp.enable = false;
    timesyncd.enable = true;

    customTinc.networks = ((import ./custom/tinc/yggdrasil.nix) {
      inherit (pkgs) stdenv nettools openresolv;
      connect = true;
      name = "hel";
      ipConf = {
        ip4 = [ { address = "10.141.2.3"; prefixLength = 16; } ];
      };
    });
    uucp = {
      enable = true;
      nodeName = "hel";
      remoteNodes = ["isaac" "ymir"]; # legacy name for odin
      sshUser = {
        openssh.authorizedKeys.keys = [ ''no-port-forwarding,no-X11-forwarding,no-agent-forwarding,command="/var/setuid-wrappers/uucico" ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIFH1QWdgoC03nzW5GBuCl2pqASHeIXIYtE9IInHdaKcO uucp@ymir''
	                                ''no-port-forwarding,no-X11-forwarding,no-agent-forwarding,command="${pkgs.writeScript "odin.sh" "#!${pkgs.stdenv.shell}\necho .\nexec -a uucico /var/setuid-wrappers/uucico\n"}" ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIJhACtnt9+3j2ev4QVA2QBlPtblPnu7yol2njgfMlHtC uucp@odin''
                                      ];
      };
      sshConfig = ''
        Host isaac
          Hostname odin.asgard.yggdrasil
          IdentityFile ~/.ssh/odin
	Host ymir
	  Hostname ymir.niflheim.yggdrasil
	  IdentityFile ~/.ssh/ymir
      '';
      commandPath = [ "${pkgs.callPackage ./hel/recv-media.nix {}}/bin" ];
      defaultCommands = [];
      commands = {
        "isaac" = ["recv-media"];
      };
      protocols = {
        "isaac" = "t";
      };
    };
    
    postfix = {
      enable = true;
      enableSmtp = false;
      setSendmail = true;
      networksStyle = "host";
      hostname = "hel.midgard.yggdrasil";
      destination = [];
      relayHost = "uucp:ymir";
      recipientDelimiter = "+";
      transport = ''
        * uucp:ymir
      '';
      extraMasterConf = ''
        uucp unix - n n - - pipe flags=Fqhu user=uucp argv=/var/setuid-wrappers/uux -z -a$sender - $nexthop!rmail ($recipient)
      '';
    };

    udev.extraRules = ''
      ACTION!="add|change", GOTO="mbim_to_qmi_rules_end"
      SUBSYSTEM!="usb|drivers", GOTO="mbim_to_qmi_rules_end"

      # load qmi_wwan module
      SUBSYSTEM=="usb", \
      ATTR{idVendor}=="1199", ATTR{idProduct}=="9079", \
        RUN+="/sbin/modprobe -b qmi_wwan"

      # force Sierra Wireless EM7455 to configuration #1
      SUBSYSTEM=="usb", \
      ATTR{idVendor}=="1199", ATTR{idProduct}=="9079", \
        ATTR{bConfigurationValue}="1"

      # add the new id in the qmi_wwan driver
      SUBSYSTEM=="drivers", \
      ENV{DEVPATH}=="/bus/usb/drivers/qmi_wwan", \
        ATTR{new_id}="1199 9079"

      # load qcserial module
      SUBSYSTEM=="usb", \
      ATTR{idVendor}=="1199", ATTR{idProduct}=="9079", \
        RUN+="/sbin/modprobe -b qcserial"

      # add the new id in the qcserial driver
      SUBSYSTEM=="drivers", \
      ENV{DEVPATH}=="/bus/usb-serial/drivers/qcserial", \
        ATTR{new_id}="1199 9079"

      LABEL="mbim_to_qmi_rules_end"
    '';

    printing = {
      enable = true;
      drivers = with pkgs; [ samsung-unified-linux-driver ];
    };
  };

  users = {
    mutableUsers = false;
  
    extraUsers.root = { inherit (import ./users/gkleen.nix) shell hashedPassword; };

    extraGroups = {
      network = {};
      media = {
        members = [ "gkleen" "uucp" ];
      };
      networkmanager = {
        members = [ "gkleen" ];
      };
    };
  };

  security = {
    sudo.extraConfig = ''
      Cmnd_Alias  SYSCTRL = /run/current-system/sw/sbin/shutdown, /run/current-system/sw/sbin/reboot, /run/current-system/sw/sbin/halt, /run/current-system/sw/bin/systemctl
      %wheel ALL=(ALL) NOPASSWD: SYSCTRL
    '';

    setuidPrograms = ["slock" "mount" "mount.nfs" "umount" "newgrp" "thinklight"];
  };

  time.timeZone = "Europe/Berlin";

  hardware = {
    pulseaudio = {
      enable = true;
      package = with pkgs; pulseaudioFull.out;
      support32Bit = true;
    };

    opengl = {
      enable = true;
      extraPackages = with pkgs; [ vaapiIntel libvdpau-va-gl vaapiVdpau ];
      driSupport32Bit = true;
    };

    bluetooth.enable = true;   

    sane = {
      enable = true;
      extraBackends = with pkgs; [ samsung-unified-linux-driver ];
      configDir = "/etc/sane.d";
    };
  };

  sound.enable = true;


  nix.gc = {
    automatic = true;
    dates = "daily";
    options = "--delete-older-than 30d";
  };

  environment.variables = {
    SSL_CERT_FILE = "/etc/ssl/certs/ca-certificates.crt";
  };

  environment.etc."X11/xorg.conf.d/50-wacom.conf".source = lib.mkForce ./hel/wacom.conf;

  environment.etc."sane.d/dll.conf".text = "xerox_mfp";
  environment.etc."sane.d/xerox_mfp.conf".text = "tcp printer.asgard.yggdrasil";
}