lass: port everything to stockholm

34 files changed, 2087 insertions, 0 deletions

diff --git a/lass/1systems/cloudkrebs.nix b/lass/1systems/cloudkrebs.nix
new file mode 100644
index 000000000..30a7fb51c
--- /dev/null
+++ b/lass/1systems/cloudkrebs.nix
@@ -0,0 +1,45 @@
+{ config, pkgs, ... }:
+
+{
+  imports = [
+    ../../2configs/tv/CAC-Developer-2.nix
+    ../../2configs/tv/CAC-CentOS-7-64bit.nix
+    ../../2configs/lass/base.nix
+    ../../2configs/lass/retiolum.nix
+    ../../2configs/lass/fastpoke-pages.nix
+    ../../2configs/lass/new-repos.nix
+    {
+      networking.interfaces.enp2s1.ip4 = [
+        {
+          address = "104.167.113.104";
+          prefixLength = 24;
+        }
+      ];
+      networking.defaultGateway = "104.167.113.1";
+      networking.nameservers = [
+        "8.8.8.8"
+      ];
+
+    }
+  ];
+
+  krebs.build = {
+    target = "root@cloudkrebs";
+    host = config.krebs.hosts.cloudkrebs;
+    deps = {
+      nixpkgs = {
+        url = https://github.com/Lassulus/nixpkgs;
+        rev = "1879a011925c561f0a7fd4043da0768bbff41d0b";
+      };
+      secrets = {
+        url = "/home/lass/secrets/${config.krebs.build.host.name}";
+      };
+      stockholm = {
+        url = toString ../..;
+      };
+    };
+  };
+
+  networking.hostName = "cloudkrebs";
+
+}
diff --git a/lass/1systems/mors.nix b/lass/1systems/mors.nix
new file mode 100644
index 000000000..3519bff66
--- /dev/null
+++ b/lass/1systems/mors.nix
@@ -0,0 +1,211 @@
+{ config, pkgs, ... }:
+
+{
+  imports = [
+    ../../2configs/lass/desktop-base.nix
+    ../../2configs/lass/programs.nix
+    ../../2configs/lass/bitcoin.nix
+    ../../2configs/lass/browsers.nix
+    ../../2configs/lass/games.nix
+    ../../2configs/lass/pass.nix
+    ../../2configs/lass/virtualbox.nix
+    ../../2configs/lass/elster.nix
+    ../../2configs/lass/urxvt.nix
+    ../../2configs/lass/steam.nix
+    ../../2configs/lass/wine.nix
+    ../../2configs/lass/texlive.nix
+    ../../2configs/lass/binary-caches.nix
+    ../../2configs/lass/ircd.nix
+    ../../2configs/lass/chromium-patched.nix
+    ../../2configs/lass/new-repos.nix
+    #../../2configs/tv/synaptics.nix
+    ../../2configs/lass/retiolum.nix
+  ];
+
+  krebs.build = {
+    target = "root@mors";
+    host = config.krebs.hosts.mors;
+    deps = {
+      nixpkgs = {
+        url = https://github.com/Lassulus/nixpkgs;
+        rev = "1879a011925c561f0a7fd4043da0768bbff41d0b";
+      };
+      secrets = {
+        url = "/home/lass/secrets/${config.krebs.build.host.name}";
+      };
+      stockholm = {
+        url = toString ../..;
+      };
+    };
+  };
+
+  networking.hostName = "mors";
+  networking.wireless.enable = true;
+
+  networking.extraHosts = ''
+  '';
+
+  nix.maxJobs = 4;
+
+  hardware.enableAllFirmware = true;
+  nixpkgs.config.allowUnfree = true;
+
+  boot = {
+    loader.grub.enable = true;
+    loader.grub.version = 2;
+    loader.grub.device = "/dev/sda";
+
+    initrd.luks.devices = [ { name = "luksroot"; device = "/dev/sda2"; } ];
+    initrd.luks.cryptoModules = [ "aes" "sha512" "sha1" "xts" ];
+    initrd.availableKernelModules = [ "xhci_hcd" "ehci_pci" "ahci" "usb_storage" ];
+    #kernelModules = [ "kvm-intel" "msr" ];
+    kernelModules = [ "msr" ];
+  };
+  fileSystems = {
+    "/" = {
+      device = "/dev/big/nix";
+      fsType = "ext4";
+    };
+
+    "/boot" = {
+      device = "/dev/sda1";
+    };
+
+    "/mnt/loot" = {
+      device = "/dev/big/loot";
+      fsType = "ext4";
+    };
+
+    "/home" = {
+      device = "/dev/big/home";
+      fsType = "ext4";
+    };
+
+    "/home/lass" = {
+      device = "/dev/big/home-lass";
+      fsType = "ext4";
+    };
+
+    "/mnt/backups" = {
+      device = "/dev/big/backups";
+      fsType = "ext4";
+    };
+
+    "/home/games/.local/share/Steam" = {
+      device = "/dev/big/steam";
+      fsType = "ext4";
+    };
+
+    "/home/virtual/virtual" = {
+      device = "/dev/big/virtual";
+      fsType = "ext4";
+    };
+
+    "/mnt/public" = {
+      device = "/dev/big/public";
+      fsType = "ext4";
+    };
+  };
+
+  services.udev.extraRules = ''
+    SUBSYSTEM=="net", ATTR{address}=="a0:88:b4:29:26:bc", NAME="wl0"
+    SUBSYSTEM=="net", ATTR{address}=="f0:de:f1:0c:a7:63", NAME="et0"
+  '';
+
+  #TODO activationScripts seem broken, fix them!
+  #activationScripts
+  #split up and move into base
+  system.activationScripts.powertopTunables = ''
+    #Enable Audio codec power management
+    echo '1' > '/sys/module/snd_hda_intel/parameters/power_save'
+    #VM writeback timeout
+    echo '1500' > '/proc/sys/vm/dirty_writeback_centisecs'
+    #Autosuspend for USB device Broadcom Bluetooth Device [Broadcom Corp]
+    echo 'auto' > '/sys/bus/usb/devices/1-1.4/power/control'
+    #Autosuspend for USB device Biometric Coprocessor
+    echo 'auto' > '/sys/bus/usb/devices/1-1.3/power/control'
+
+    #Runtime PMs
+    echo 'auto' > '/sys/bus/pci/devices/0000:00:02.0/power/control'
+    echo 'auto' > '/sys/bus/pci/devices/0000:00:16.0/power/control'
+    echo 'auto' > '/sys/bus/pci/devices/0000:00:00.0/power/control'
+    echo 'auto' > '/sys/bus/pci/devices/0000:03:00.0/power/control'
+    echo 'auto' > '/sys/bus/pci/devices/0000:00:1f.3/power/control'
+    echo 'auto' > '/sys/bus/pci/devices/0000:00:1f.2/power/control'
+    echo 'auto' > '/sys/bus/pci/devices/0000:00:1f.0/power/control'
+    echo 'auto' > '/sys/bus/pci/devices/0000:00:1d.0/power/control'
+    echo 'auto' > '/sys/bus/pci/devices/0000:00:1c.3/power/control'
+    echo 'auto' > '/sys/bus/pci/devices/0000:0d:00.0/power/control'
+    echo 'auto' > '/sys/bus/pci/devices/0000:00:1c.0/power/control'
+    echo 'auto' > '/sys/bus/pci/devices/0000:00:1b.0/power/control'
+    echo 'auto' > '/sys/bus/pci/devices/0000:00:1a.0/power/control'
+    echo 'auto' > '/sys/bus/pci/devices/0000:00:19.0/power/control'
+    echo 'auto' > '/sys/bus/pci/devices/0000:00:16.3/power/control'
+    echo 'auto' > '/sys/bus/pci/devices/0000:00:1c.1/power/control'
+    echo 'auto' > '/sys/bus/pci/devices/0000:00:1c.4/power/control'
+  '';
+
+  hardware.trackpoint = {
+    enable = true;
+    sensitivity = 220;
+    speed = 0;
+    emulateWheel = true;
+  };
+
+  #system.activationScripts.trackpoint = ''
+  #  echo 0 > '/sys/devices/platform/i8042/serio1/serio2/speed'
+  #  echo 220 > '/sys/devices/platform/i8042/serio1/serio2/sensitivity'
+  #'';
+
+  services.xserver = {
+    videoDriver = "intel";
+    vaapiDrivers = [ pkgs.vaapiIntel ];
+    deviceSection = ''
+      Option "AccelMethod" "sna"
+      BusID "PCI:0:2:0"
+    '';
+  };
+
+  environment.systemPackages = with pkgs; [
+  ];
+
+  #TODO: fix this shit
+  ##fprint stuff
+  ##sudo fprintd-enroll $USER to save fingerprints
+  #services.fprintd.enable = true;
+  #security.pam.services.sudo.fprintAuth = true;
+
+  users.extraGroups = {
+    loot = {
+      members = [
+        config.users.extraUsers.mainUser.name
+        "firefox"
+        "chromium"
+        "google"
+        "virtual"
+      ];
+    };
+  };
+
+  networking.firewall = {
+    allowPing = true;
+    allowedTCPPorts = [
+      8000
+    ];
+    allowedUDPPorts = [
+      67
+    ];
+  };
+
+  services.mongodb = {
+    enable = true;
+  };
+
+  lass.iptables = {
+    tables = {
+      filter.INPUT.rules = [
+        { predicate = "-p tcp --dport 8000"; target = "ACCEPT"; precedence = 9001; }
+      ];
+    };
+  };
+}
diff --git a/lass/1systems/uriel.nix b/lass/1systems/uriel.nix
new file mode 100644
index 000000000..8984004e1
--- /dev/null
+++ b/lass/1systems/uriel.nix
@@ -0,0 +1,181 @@
+{ config, pkgs, ... }:
+
+with builtins;
+{
+  imports = [
+    ../../2configs/lass/desktop-base.nix
+    ../../2configs/lass/browsers.nix
+    ../../2configs/lass/games.nix
+    ../../2configs/lass/pass.nix
+    ../../2configs/lass/urxvt.nix
+    ../../2configs/lass/bird.nix
+    ../../2configs/lass/new-repos.nix
+    ../../2configs/lass/chromium-patched.nix
+    ../../2configs/lass/retiolum.nix
+    {
+      users.extraUsers = {
+        root = {
+          openssh.authorizedKeys.keys = map readFile [
+            ../../Zpubkeys/uriel.ssh.pub
+          ];
+        };
+      };
+    }
+  ];
+
+  krebs.build = {
+    target = "root@uriel";
+    host = config.krebs.hosts.uriel;
+    deps = {
+      nixpkgs = {
+        url = https://github.com/Lassulus/nixpkgs;
+        rev = "961fcbabd7643171ea74bd550fee1ce5c13c2e90";
+      };
+      secrets = {
+        url = "/home/lass/secrets/${config.krebs.build.host.name}";
+      };
+      stockholm = {
+        url = toString ../..;
+      };
+    };
+  };
+
+  networking.hostName = "uriel";
+
+  networking.wireless.enable = true;
+  nix.maxJobs = 2;
+
+  hardware.enableAllFirmware = true;
+  nixpkgs.config.allowUnfree = true;
+
+  boot = {
+    #kernelParams = [
+    #  "acpi.brightness_switch_enabled=0"
+    #];
+    #loader.grub.enable = true;
+    #loader.grub.version = 2;
+    #loader.grub.device = "/dev/sda";
+
+    loader.gummiboot.enable = true;
+    loader.gummiboot.timeout = 5;
+
+    initrd.luks.devices = [ { name = "luksroot"; device = "/dev/sda2"; } ];
+    initrd.luks.cryptoModules = [ "aes" "sha512" "sha1" "xts" ];
+    initrd.availableKernelModules = [ "xhci_hcd" "ehci_pci" "ahci" "usb_storage" ];
+    #kernelModules = [ "kvm-intel" "msr" ];
+    kernelModules = [ "msr" ];
+    extraModprobeConfig = ''
+    '';
+  };
+  fileSystems = {
+    "/" = {
+      device = "/dev/pool/root";
+      fsType = "ext4";
+    };
+
+    "/boot" = {
+      device = "/dev/sda1";
+    };
+  };
+
+  services.udev.extraRules = ''
+    SUBSYSTEM=="net", ATTR{address}=="64:27:37:7d:d8:ae", NAME="wl0"
+    SUBSYSTEM=="net", ATTR{address}=="f0:de:f1:b8:c8:2e", NAME="et0"
+  '';
+
+  #services.xserver = {
+  #};
+
+  services.xserver.synaptics = {
+    enable = true;
+    twoFingerScroll = true;
+    accelFactor = "0.035";
+    additionalOptions = ''
+      Option "FingerHigh" "60"
+      Option "FingerLow"  "60"
+    '';
+  };
+
+  environment.systemPackages = with pkgs; [
+  ];
+
+  #for google hangout
+
+  users.extraUsers.google.extraGroups = [ "audio" "video" ];
+
+
+  #users.extraGroups = {
+  #  loot = {
+  #    members = [
+  #      "lass"
+  #      "firefox"
+  #      "chromium"
+  #      "google"
+  #    ];
+  #  };
+  #};
+  #
+  # iptables
+  #
+  #networking.firewall.enable = false;
+  #system.activationScripts.iptables =
+  #  let
+  #    log = false;
+  #    when = c: f: if c then f else "";
+  #  in
+  #    ''
+  #      ip4tables() { ${pkgs.iptables}/sbin/iptables "$@"; }
+  #      ip6tables() { ${pkgs.iptables}/sbin/ip6tables "$@"; }
+  #      ipXtables() { ip4tables "$@"; ip6tables "$@"; }
+
+  #      #
+  #      # nat
+  #      #
+
+  #      # reset tables
+  #      ipXtables -t nat -F
+  #      ipXtables -t nat -X
+
+  #      #
+  #      #ipXtables -t nat -A PREROUTING -j REDIRECT ! -i retiolum -p tcp --dport ssh --to-ports 0
+  #      ipXtables -t nat -A PREROUTING -j REDIRECT -p tcp --dport 11423 --to-ports ssh
+
+  #      #
+  #      # filter
+  #      #
+
+  #      # reset tables
+  #      ipXtables -P INPUT DROP
+  #      ipXtables -P FORWARD DROP
+  #      ipXtables -F
+  #      ipXtables -X
+
+  #      # create custom chains
+  #      ipXtables -N Retiolum
+
+  #      # INPUT
+  #      ipXtables -A INPUT -j ACCEPT -m conntrack --ctstate RELATED,ESTABLISHED
+  #      ipXtables -A INPUT -j ACCEPT -i lo
+  #      ipXtables -A INPUT -j ACCEPT -p tcp --dport ssh -m conntrack --ctstate NEW
+  #      ipXtables -A INPUT -j ACCEPT -p tcp --dport http -m conntrack --ctstate NEW
+  #      ipXtables -A INPUT -j ACCEPT -p tcp --dport tinc -m conntrack --ctstate NEW
+  #      ipXtables -A INPUT -j Retiolum -i retiolum
+  #      ${when log "ipXtables -A INPUT -j LOG --log-level info --log-prefix 'INPUT DROP '"}
+
+  #      # FORWARD
+  #      ${when log "ipXtables -A FORWARD -j LOG --log-level info --log-prefix 'FORWARD DROP '"}
+
+  #      # Retiolum
+  #      ip4tables -A Retiolum -j ACCEPT -p icmp --icmp-type echo-request
+  #      ip6tables -A Retiolum -j ACCEPT -p ipv6-icmp -m icmp6 --icmpv6-type echo-request
+
+
+  #      ${when log "ipXtables -A Retiolum -j LOG --log-level info --log-prefix 'REJECT '"}
+  #      ipXtables -A Retiolum -j REJECT -p tcp --reject-with tcp-reset
+  #      ip4tables -A Retiolum -j REJECT -p udp --reject-with icmp-port-unreachable
+  #      ip4tables -A Retiolum -j REJECT        --reject-with icmp-proto-unreachable
+  #      ip6tables -A Retiolum -j REJECT -p udp --reject-with icmp6-port-unreachable
+  #      ip6tables -A Retiolum -j REJECT
+
+  #    '';
+}
diff --git a/lass/2configs/base.nix b/lass/2configs/base.nix
new file mode 100644
index 000000000..8d4a9c896
--- /dev/null
+++ b/lass/2configs/base.nix
@@ -0,0 +1,143 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+{
+  imports = [
+    ../../3modules/lass/iptables.nix
+    ../../2configs/lass/vim.nix
+    {
+      users.extraUsers =
+        mapAttrs (_: h: { hashedPassword = h; })
+                 (import /root/src/secrets/hashedPasswords.nix);
+    }
+    {
+      users.extraUsers = {
+        root = {
+          openssh.authorizedKeys.keys = map readFile [
+            ../../Zpubkeys/lass.ssh.pub
+          ];
+        };
+        mainUser = {
+          name = "lass";
+          uid = 1337;
+          home = "/home/lass";
+          group = "users";
+          createHome = true;
+          useDefaultShell = true;
+          extraGroups = [
+            "audio"
+            "wheel"
+          ];
+          openssh.authorizedKeys.keys = map readFile [
+            ../../Zpubkeys/lass.ssh.pub
+          ];
+        };
+      };
+    }
+  ];
+
+  krebs = {
+    enable = true;
+    search-domain = "retiolum";
+  };
+
+  nix.useChroot = true;
+
+  users.mutableUsers = false;
+
+  boot.tmpOnTmpfs = true;
+  # see tmpfiles.d(5)
+  systemd.tmpfiles.rules = [
+    "d /tmp 1777 root root - -"
+  ];
+
+  # multiple-definition-problem when defining environment.variables.EDITOR
+  environment.extraInit = ''
+    EDITOR=vim
+    PAGER=most
+  '';
+
+  environment.systemPackages = with pkgs; [
+    nmap
+
+    git
+    most
+    rxvt_unicode.terminfo
+
+  #network
+    iptables
+  ];
+
+  programs.bash = {
+    enableCompletion = true;
+    interactiveShellInit = ''
+      HISTCONTROL='erasedups:ignorespace'
+      HISTSIZE=65536
+      HISTFILESIZE=$HISTSIZE
+
+      shopt -s checkhash
+      shopt -s histappend histreedit histverify
+      shopt -s no_empty_cmd_completion
+      complete -d cd
+
+      #fancy colors
+      if [ -e ~/LS_COLORS ]; then
+        eval $(dircolors ~/LS_COLORS)
+      fi
+
+      if [ -e /etc/nixos/dotfiles/link ]; then
+        /etc/nixos/dotfiles/link
+      fi
+    '';
+    promptInit = ''
+      if test $UID = 0; then
+        PS1='\[\033[1;31m\]\w\[\033[0m\] '
+      elif test $UID = 1337; then
+        PS1='\[\033[1;32m\]\w\[\033[0m\] '
+      else
+        PS1='\[\033[1;33m\]\u@\w\[\033[0m\] '
+      fi
+      if test -n "$SSH_CLIENT"; then
+        PS1='\[\033[35m\]\h'" $PS1"
+      fi
+    '';
+  };
+
+  security.setuidPrograms = [
+    "sendmail"
+  ];
+
+  #services.gitolite = {
+  #  enable = true;
+  #  dataDir = "/home/gitolite";
+  #  adminPubkey = config.sshKeys.lass.pub;
+  #};
+
+  services.openssh = {
+    enable = true;
+    hostKeys = [
+      # XXX bits here make no science
+      { bits = 8192; type = "ed25519"; path = "/etc/ssh/ssh_host_ed25519_key"; }
+    ];
+  };
+
+  services.journald.extraConfig = ''
+    SystemMaxUse=1G
+    RuntimeMaxUse=128M
+  '';
+
+  lass.iptables = {
+    enable = true;
+    tables = {
+      filter.INPUT.policy = "DROP";
+      filter.FORWARD.policy = "DROP";
+      filter.INPUT.rules = [
+        { predicate = "-m conntrack --ctstate RELATED,ESTABLISHED"; target = "ACCEPT"; precedence = 10001; }
+        { predicate = "-p icmp"; target = "ACCEPT"; precedence = 10000; }
+        { predicate = "-i lo"; target = "ACCEPT"; precedence = 9999; }
+        { predicate = "-p tcp --dport 22"; target = "ACCEPT"; precedence = 9998; }
+      ];
+    };
+  };
+
+}
diff --git a/lass/2configs/binary-caches.nix b/lass/2configs/binary-caches.nix
new file mode 100644
index 000000000..c2727520d
--- /dev/null
+++ b/lass/2configs/binary-caches.nix
@@ -0,0 +1,13 @@
+{ config, ... }:
+
+{
+  nix.sshServe.enable = true;
+  nix.sshServe.keys = [
+    "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIBF9SBNKE3Pw/ALwTfzpzs+j6Rpaf0kUy6FiPMmgNNNt root@mors"
+    "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIFCZSq5oLrokkh3F+MOdK5/nzVIEDvqyvfzLMNWmzsYD root@uriel"
+  ];
+  nix.binaryCaches = [
+    #"scp://nix-ssh@mors"
+    #"scp://nix-ssh@uriel"
+  ];
+}
diff --git a/lass/2configs/bird.nix b/lass/2configs/bird.nix
new file mode 100644
index 000000000..3fc265cd7
--- /dev/null
+++ b/lass/2configs/bird.nix
@@ -0,0 +1,13 @@
+{ config, ... }:
+
+{
+  config.services.bird = {
+    enable = true;
+    config = ''
+      router id 192.168.122.1;
+      protocol device {
+        scan time 10;
+      }
+    '';
+  };
+}
diff --git a/lass/2configs/bitcoin.nix b/lass/2configs/bitcoin.nix
new file mode 100644
index 000000000..d3bccbf5c
--- /dev/null
+++ b/lass/2configs/bitcoin.nix
@@ -0,0 +1,17 @@
+{ config, pkgs, ... }:
+
+{
+  environment.systemPackages = with pkgs; [
+    electrum
+  ];
+
+  users.extraUsers = {
+    bitcoin = {
+      name = "bitcoin";
+      description = "user for bitcoin stuff";
+      home = "/home/bitcoin";
+      useDefaultShell = true;
+      createHome = true;
+    };
+  };
+}
diff --git a/lass/2configs/browsers.nix b/lass/2configs/browsers.nix
new file mode 100644
index 000000000..8aecea925
--- /dev/null
+++ b/lass/2configs/browsers.nix
@@ -0,0 +1,67 @@
+{ config, pkgs, ... }:
+
+let
+  mainUser = config.users.extraUsers.mainUser;
+
+in {
+
+  nixpkgs.config.packageOverrides = pkgs : {
+    chromium = pkgs.chromium.override {
+      pulseSupport = true;
+    };
+  };
+
+  environment.systemPackages = with pkgs; [
+    firefox
+  ];
+
+  users.extraUsers = {
+    firefox = {
+      name = "firefox";
+      description = "user for running firefox";
+      home = "/home/firefox";
+      useDefaultShell = true;
+      extraGroups = [ "audio" ];
+      createHome = true;
+    };
+    chromium = {
+      name = "chromium";
+      description = "user for running chromium";
+      home = "/home/chromium";
+      useDefaultShell = true;
+      extraGroups = [ "audio" ];
+      createHome = true;
+    };
+    facebook = {
+      name = "facebook";
+      description = "user for running facebook in chromium";
+      home = "/home/facebook";
+      useDefaultShell = true;
+      extraGroups = [ "audio" ];
+      createHome = true;
+    };
+    google = {
+      name = "google";
+      description = "user for running google+/gmail in chromium";
+      home = "/home/google";
+      useDefaultShell = true;
+      createHome = true;
+    };
+    flash = {
+      name = "flash";
+      description = "user for running flash stuff";
+      home = "/home/flash";
+      useDefaultShell = true;
+      extraGroups = [ "audio" ];
+      createHome = true;
+    };
+  };
+
+  security.sudo.extraConfig = ''
+    ${mainUser.name} ALL=(firefox) NOPASSWD: ALL
+    ${mainUser.name} ALL=(chromium) NOPASSWD: ALL
+    ${mainUser.name} ALL=(facebook) NOPASSWD: ALL
+    ${mainUser.name} ALL=(google) NOPASSWD: ALL
+    ${mainUser.name} ALL=(flash) NOPASSWD: ALL
+  '';
+}
diff --git a/lass/2configs/chromium-patched.nix b/lass/2configs/chromium-patched.nix
new file mode 100644
index 000000000..715181778
--- /dev/null
+++ b/lass/2configs/chromium-patched.nix
@@ -0,0 +1,48 @@
+{ config, pkgs, ... }:
+
+#settings to test:
+#
+      #"ForceEphemeralProfiles": true,
+let
+  masterPolicy = pkgs.writeText "master.json" ''
+    {
+      "PasswordManagerEnabled": false,
+      "DefaultGeolocationSetting": 2,
+      "RestoreOnStartup": 1,
+      "AutoFillEnabled": false,
+      "BackgroundModeEnabled": false,
+      "DefaultBrowserSettingEnabled": false,
+      "SafeBrowsingEnabled": false,
+      "ExtensionInstallForcelist": [
+        "cjpalhdlnbpafiamejdnhcphjbkeiagm;https://clients2.google.com/service/update2/crx",
+        "ihlenndgcmojhcghmfjfneahoeklbjjh;https://clients2.google.com/service/update2/crx"
+      ]
+    }
+  '';
+
+  master_preferences = pkgs.writeText "master_preferences" ''
+    {
+      "browser": {
+        "custom_chrome_frame": true
+      },
+
+      "extensions": {
+        "theme": {
+          "id": "",
+          "use_system": true
+        }
+      }
+    }
+  '';
+in {
+  environment.etc."chromium/policies/managed/master.json".source = pkgs.lib.mkForce masterPolicy;
+
+  environment.systemPackages = [
+    #pkgs.chromium
+    (pkgs.lib.overrideDerivation pkgs.chromium (attrs: {
+      buildCommand = attrs.buildCommand + ''
+        touch $out/TEST123
+      '';
+    }))
+  ];
+}
diff --git a/lass/2configs/desktop-base.nix b/lass/2configs/desktop-base.nix
new file mode 100644
index 000000000..9b98e4a8b
--- /dev/null
+++ b/lass/2configs/desktop-base.nix
@@ -0,0 +1,63 @@
+{ config, pkgs, ... }:
+
+let
+  mainUser = config.users.extraUsers.mainUser;
+in {
+  imports = [
+    ./base.nix
+  ];
+
+  time.timeZone = "Europe/Berlin";
+
+  virtualisation.libvirtd.enable = true;
+
+  hardware.pulseaudio = {
+    enable = true;
+    systemWide = true;
+  };
+
+  programs.ssh.startAgent = false;
+
+  security.setuidPrograms = [ "slock" ];
+
+  services.printing = {
+    enable = true;
+    drivers = [ pkgs.foomatic_filters ];
+  };
+
+  environment.systemPackages = with pkgs; [
+
+    powertop
+
+  #window manager stuff
+    haskellPackages.xmobar
+    haskellPackages.yeganesh
+    dmenu2
+    xlibs.fontschumachermisc
+  ];
+
+  fonts.fonts = [
+    pkgs.xlibs.fontschumachermisc
+  ];
+
+  services.xserver = {
+    enable = true;
+
+    windowManager.xmonad.extraPackages = hspkgs: with hspkgs; [
+      X11-xshape
+    ];
+    windowManager.xmonad.enable = true;
+    windowManager.xmonad.enableContribAndExtras = true;
+    windowManager.default = "xmonad";
+    desktopManager.default = "none";
+    desktopManager.xterm.enable = false;
+    displayManager.slim.enable = true;
+    displayManager.auto.enable = true;
+    displayManager.auto.user = mainUser.name;
+
+    layout = "us";
+    xkbModel = "evdev";
+    xkbVariant = "altgr-intl";
+  };
+
+}
diff --git a/lass/2configs/elster.nix b/lass/2configs/elster.nix
new file mode 100644
index 000000000..1edd01896
--- /dev/null
+++ b/lass/2configs/elster.nix
@@ -0,0 +1,20 @@
+{ config, pkgs, ... }:
+