diff --git a/default.nix b/default.nix
index 11bae7d98..b261e51e7 100644
--- a/default.nix
+++ b/default.nix
@@ -17,7 +17,8 @@
 { current-date ? abort "current-date not defined"
 , current-host-name ? abort "current-host-name not defined"
 , current-user-name ? builtins.getEnv "LOGNAME"
-}@current:
+, StrictHostKeyChecking ? "yes"
+}@args:
 
 let stockholm = {
     # The generated scripts to deploy (or infest) systems can be found in the
@@ -44,11 +45,25 @@ let stockholm = {
     # Additionally, output lib and pkgs for easy access from the shell.
     # Notice how we're evaluating just the base module to obtain pkgs.
     inherit lib;
-    inherit (eval {}) pkgs;
+    inherit pkgs;
   };
 
-  krebs = import ./krebs (current // { inherit stockholm; });
-  inherit (krebs) lib;
+  krebs = import ./krebs (args // { inherit lib stockholm; });
+
+  lib =
+    let
+      lib = import <nixpkgs/lib>;
+      klib = import ./krebs/4lib { inherit lib; };
+      #ulib = import (./. + "/${current-user-name}/4lib") { lib = lib // klib; };
+      ulib = {}; # TODO
+    in
+    builtins // lib // klib // ulib // rec {
+      # TODO move this stuff
+      stockholm-path = ./.;
+      nspath = ns: p: stockholm-path + "/${ns}/${p}";
+    };
+
+  inherit (eval {}) pkgs;
 
   # Path resolvers for common and individual files.
   # Example: `upath "3modules"` produces the current user's 3modules directory
@@ -65,8 +80,8 @@ let stockholm = {
       let
         # Notice the ordering.  Krebs packages can only depend on Nixpkgs,
         # whereas user packages additionally can depend on krebs packages.
-        kpkgs = import (kpath "5pkgs") { inherit pkgs; };
-        upkgs = import (upath "5pkgs") { pkgs = pkgs // kpkgs; };
+        kpkgs = import (kpath "5pkgs") { inherit lib pkgs; };
+        upkgs = import (upath "5pkgs") { inherit lib; pkgs = pkgs // kpkgs; };
       in
       kpkgs // upkgs;
   };
@@ -76,8 +91,10 @@ let stockholm = {
   # packages and modules on top of NixOS.  Some of this stuff might become
   # useful to a broader audience, at which point it should probably be merged
   # and pull-requested for inclusion into NixOS/nixpkgs.
-  # TODO provide krebs lib, so modules don't have to import it awkwardly
   eval = config: import <nixpkgs/nixos/lib/eval-config.nix> {
+    specialArgs = {
+      inherit lib;
+    };
     modules = [
       base-module
       config
diff --git a/krebs/3modules/build.nix b/krebs/3modules/build.nix
index 57495ea69..1205e192b 100644
--- a/krebs/3modules/build.nix
+++ b/krebs/3modules/build.nix
@@ -1,6 +1,6 @@
 { config, lib, ... }:
 
-with import ../4lib { inherit lib; };
+with lib;
 
 let
   target = config.krebs.build // { user.name = "root"; };
diff --git a/krebs/3modules/default.nix b/krebs/3modules/default.nix
index bc858f668..e0c3b00f8 100644
--- a/krebs/3modules/default.nix
+++ b/krebs/3modules/default.nix
@@ -1,6 +1,6 @@
 { config, lib, ... }:
 
-with import ../4lib { inherit lib; };
+with lib;
 let
   cfg = config.krebs;
 
diff --git a/krebs/3modules/git.nix b/krebs/3modules/git.nix
index 64b7820b2..234129497 100644
--- a/krebs/3modules/git.nix
+++ b/krebs/3modules/git.nix
@@ -6,7 +6,7 @@
 # TODO when authorized_keys changes, then restart ssh
 #       (or kill already connected users somehow)
 
-with import ../4lib { inherit lib; };
+with lib;
 let
   cfg = config.krebs.git;
 
diff --git a/krebs/3modules/github-hosts-sync.nix b/krebs/3modules/github-hosts-sync.nix
index 2a1df9e03..5503ee8d6 100644
--- a/krebs/3modules/github-hosts-sync.nix
+++ b/krebs/3modules/github-hosts-sync.nix
@@ -1,7 +1,6 @@
 { config, lib, pkgs, ... }:
 
-with builtins;
-with import ../4lib { inherit lib; };
+with lib;
 let
   cfg = config.krebs.github-hosts-sync;
 
diff --git a/krebs/3modules/lass/default.nix b/krebs/3modules/lass/default.nix
index afedf95f2..498282b03 100644
--- a/krebs/3modules/lass/default.nix
+++ b/krebs/3modules/lass/default.nix
@@ -1,8 +1,36 @@
 { lib, ... }:
 
-with import ../../4lib { inherit lib; };
+with lib;
 
-{
+let
+  testHosts = lib.genAttrs [
+    "test-arch"
+    "test-centos6"
+    "test-centos7"
+  ] (name: {
+    inherit name;
+    cores = 1;
+    nets = {
+      retiolum = {
+        addrs4 = ["10.243.111.111"];
+        addrs6 = ["42:0:0:0:0:0:0:7357"];
+        aliases = [
+          "test.retiolum"
+        ];
+        tinc.pubkey = ''
+          -----BEGIN RSA PUBLIC KEY-----
+          MIIBCgKCAQEAy41YKF/wpHLnN370MSdnAo63QUW30aw+6O79cnaJyxoL6ZQkk4Nd
+          mrX2tBIfb2hhhgm4Jecy33WVymoEL7EiRZ6gshJaYwte51Jnrac6IFQyiRGMqHY5
+          TG/6IzzTOkeQrT1fw3Yfh0NRfqLBZLr0nAFoqgzIVRxvy+QO1gCU2UDKkQ/y5df1
+          K+YsMipxU08dsOkPkmLdC/+vDaZiEdYljIS3Omd+ED5JmLM3MSs/ZPQ8xjkjEAy8
+          QqD9/67bDoeXyg1ZxED2n0+aRKtU/CK/66Li//yev6yv38OQSEM4t/V0dr9sjLcY
+          VIdkxKf96F9r3vcDf/9xw2HrqVoy+D5XYQIDAQAB
+          -----END RSA PUBLIC KEY-----
+        '';
+      };
+    };
+  });
+in {
   hosts = addNames {
     echelon = {
       cores = 4;
@@ -104,7 +132,11 @@ with import ../../4lib { inherit lib; };
     uriel = {
       cores = 1;
       dc = "lass";
-      nets = rec {
+      nets = {
+        gg23 = {
+          addrs4 = ["10.23.1.12"];
+          aliases = ["uriel.gg23"];
+        };
         retiolum = {
           addrs4 = ["10.243.81.176"];
           addrs6 = ["42:dc25:60cf:94ef:759b:d2b6:98a9:2e56"];
@@ -131,7 +163,11 @@ with import ../../4lib { inherit lib; };
     mors = {
       cores = 2;
       dc = "lass";
-      nets = rec {
+      nets = {
+        gg23 = {
+          addrs4 = ["10.23.1.11"];
+          aliases = ["mors.gg23"];
+        };
         retiolum = {
           addrs4 = ["10.243.0.2"];
           addrs6 = ["42:0:0:0:0:0:0:dea7"];
@@ -155,8 +191,24 @@ with import ../../4lib { inherit lib; };
       ssh.privkey.path = <secrets/ssh.id_ed25519>;
       ssh.pubkey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAINAMPlIG+6u75GJ3kvsPF6OoIZsU+u8ZQ+rdviv5fNMD";
     };
+    schnabel-ap = {
+      nets = {
+        gg23 = {
+          addrs4 = ["10.23.1.20"];
+          aliases = ["schnabel-ap.gg23"];
+        };
+      };
+    };
+    Reichsfunk-ap = {
+      nets = {
+        gg23 = {
+          addrs4 = ["10.23.1.10"];
+          aliases = ["Reichsfunk-ap.gg23"];
+        };
+      };
+    };
 
-  };
+  } // testHosts;
   users = addNames {
     lass = {
       pubkey = readFile ../../Zpubkeys/lass.ssh.pub;
diff --git a/krebs/3modules/makefu/default.nix b/krebs/3modules/makefu/default.nix
index bc0d389f2..d328033cc 100644
--- a/krebs/3modules/makefu/default.nix
+++ b/krebs/3modules/makefu/default.nix
@@ -1,6 +1,6 @@
 { lib, ... }:
 
-with import ../../4lib { inherit lib; };
+with lib;
 
 {
   hosts = addNames {
diff --git a/krebs/3modules/tv/default.nix b/krebs/3modules/tv/default.nix
index 5d5fead8f..4c295dffe 100644
--- a/krebs/3modules/tv/default.nix
+++ b/krebs/3modules/tv/default.nix
@@ -1,6 +1,6 @@
 { lib, ... }:
 
-with import ../../4lib { inherit lib; };
+with lib;
 
 {
   dns.providers = {
@@ -65,7 +65,7 @@ with import ../../4lib { inherit lib; };
       dc = "tv"; #dc = "cac";
       nets = rec {
         internet = {
-          addrs4 = ["104.233.84.215"];
+          addrs4 = ["104.167.114.142"];
           aliases = [
             "mkdir.internet"
           ];
@@ -231,6 +231,7 @@ with import ../../4lib { inherit lib; };
           addrs6 = ["42:0:0:0:0:0:0:1337"];
           aliases = [
             "wu.retiolum"
+            "cgit.wu.retiolum"
           ];
           tinc.pubkey = ''
             -----BEGIN RSA PUBLIC KEY-----
diff --git a/krebs/4lib/default.nix b/krebs/4lib/default.nix
index 0a6101314..396307c22 100644
--- a/krebs/4lib/default.nix
+++ b/krebs/4lib/default.nix
@@ -3,8 +3,6 @@
 with builtins;
 with lib;
 
-builtins //
-lib //
 rec {
 
   eq = x: y: x == y;
diff --git a/krebs/4lib/infest/finalize.sh b/krebs/4lib/infest/finalize.sh
index 0039960c5..94b13e0be 100644
--- a/krebs/4lib/infest/finalize.sh
+++ b/krebs/4lib/infest/finalize.sh
@@ -3,8 +3,8 @@ set -eux
 {
   umount /mnt/nix
   umount /mnt/root
-  umount /boot || :
   umount /mnt/boot
+  umount /boot || :
   umount /mnt
 
   coreutils_path=$(set +f; for i in /nix/store/*coreutils*/bin; do :; done; echo $i)
diff --git a/krebs/4lib/infest/prepare.sh b/krebs/4lib/infest/prepare.sh
index 9fbd5be86..94c9b0fb5 100644
--- a/krebs/4lib/infest/prepare.sh
+++ b/krebs/4lib/infest/prepare.sh
@@ -18,6 +18,13 @@ prepare() {(
         esac
         ;;
     esac
+  elif test -e /etc/centos-release; then
+    case $(cat /etc/centos-release) in
+      'CentOS release 6.5 (Final)')
+        prepare_centos "$@"
+        exit
+        ;;
+    esac
   fi
   echo "$0 prepare: unknown OS" >&2
   exit -1
diff --git a/krebs/5pkgs/default.nix b/krebs/5pkgs/default.nix
index 84fb8725b..0ec4b3ded 100644
--- a/krebs/5pkgs/default.nix
+++ b/krebs/5pkgs/default.nix
@@ -1,7 +1,6 @@
-{ pkgs, ... }:
-
-with import ../4lib { inherit (pkgs) lib; };
+{ lib, pkgs, ... }:
 
+with lib;
 let
   subdirs = mapAttrs (_: flip pkgs.callPackage {}) (subdirsOf ./.);
   pkgs' = pkgs // subdirs;
diff --git a/krebs/default.nix b/krebs/default.nix
index c23cf152a..31a7f7d04 100644
--- a/krebs/default.nix
+++ b/krebs/default.nix
@@ -1,14 +1,16 @@
 { current-date
 , current-host-name
 , current-user-name
+, lib
 , stockholm
+, StrictHostKeyChecking ? "yes"
 }:
 
 let out = {
     inherit deploy;
     inherit infest;
     inherit init;
-    inherit lib;
+    inherit nixos-install;
   };
 
   deploy =
@@ -23,7 +25,7 @@ let out = {
       set -efu
       (${populate args})
       ${rootssh target ''
-        ${install args}
+        ${nix-install args}
         ${config.krebs.build.profile}/bin/switch-to-configuration switch
       ''}
       echo OK
@@ -39,63 +41,14 @@ let out = {
       # krebs.infest
       set -efu
 
-      # XXX type -p is non-standard
-      #export RSYNC_RSH; RSYNC_RSH="$(type -p ssh) \
-      #  -o 'HostName $ {target.host.infest.addr}' \
-      #  -o 'Port $ {toString target.host.infest.port}' \
-      #"
-      #ssh() {
-      #  eval "$RSYNC_RSH \"\$@\""
-      #}
-
-      ${lib.rootssh target ''
+      ${rootssh target ''
         ${builtins.readFile ./4lib/infest/prepare.sh}
         ${builtins.readFile ./4lib/infest/install-nix.sh}
       ''}
 
-      (${lib.populate args})
-
-      ${lib.rootssh target ''
-        export PATH; PATH=/root/.nix-profile/bin:$PATH
-
-        src=$(type -p nixos-install)
-        cat_src() {
-          sed < "$src" "$(
-            { sed < "$src" -n '
-                  /^if ! test -e "\$mountPoint\/\$NIXOS_CONFIG/,/^fi$/=
-                  /^nixpkgs=/=
-                  /^NIX_PATH=/,/^$/{/./=}
-
-                  # Disable: Copy the NixOS/Nixpkgs sources to the target as
-                  # the initial contents of the NixOS channel.
-                  /^srcs=/,/^ln -sfn /=
-                '
-            } | sed 's:$:s/^/#krebs#/:'
-          )"
-        }
-
-        # Location to insert install
-        i=$(sed -n '/^echo "building the system configuration/=' "$src")
-
-        {
-          cat_src | sed -n "1,$i{p}"
-          cat ${lib.doc (install args)}
-          cat_src | sed -n "$i,\''${$i!p}"
-        } > nixos-install
-        chmod +x nixos-install
-
-        ## Wrap inserted install into chroot.
-        #nix_env=$(cat_src | sed -n '
-        #  s:.*\(/nix/store/[a-z0-9]*-nix-[0-9.]\+/bin/nix-env\).*:\1:p;T;q
-        #')
-        #echo nix-env is $nix_env
-        #sed -i '
-        #  s:^nix-env:chroot $mountPoint '"$nix_env"':
-        #' nixos-install
-
-        unset SSL_CERT_FILE
-        ./nixos-install
+      (${nixos-install args})
 
+      ${rootssh target ''
         ${builtins.readFile ./4lib/infest/finalize.sh}
       ''}
     '';
@@ -135,10 +88,74 @@ let out = {
       EOF
     '';
 
-  lib = import ./4lib { lib = import <nixpkgs/lib>; } // rec {
-    stockholm-path = ../.;
-    nspath = ns: p: stockholm-path + "/${ns}/${p}";
-  };
+  nixos-install =
+    { system ? current-host-name
+    , target ? system
+    }@args: let
+    in ''
+      #! /bin/sh
+      # ${current-date} ${current-user-name}@${current-host-name}
+      # krebs.nixos-install
+      (${populate args})
+
+      ${rootssh target ''
+        export PATH; PATH=/root/.nix-profile/bin:$PATH
+
+        src=$(type -p nixos-install)
+        cat_src() {
+          sed < "$src" "$(
+            { sed < "$src" -n '
+                  /^if ! test -e "\$mountPoint\/\$NIXOS_CONFIG/,/^fi$/=
+                  /^nixpkgs=/=
+                  /^NIX_PATH=/,/^$/{/./=}
+
+                  # Disable: Copy the NixOS/Nixpkgs sources to the target as
+                  # the initial contents of the NixOS channel.
+                  /^srcs=/,/^ln -sfn /=
+                '
+            } | sed 's:$:s/^/#krebs#/:'
+          )"
+        }
+
+        # Location to insert `nix-install`
+        i=$(sed -n '/^echo "building the system configuration/=' "$src")
+
+        {
+          cat_src | sed -n "1,$i{p}"
+          cat ${doc (nix-install args)}
+          cat_src | sed -n "$i,\''${$i!p}"
+        } > nixos-install
+        chmod +x nixos-install
+
+        # Wrap inserted nix-install into chroot.
+        nix_env=$(cat_src | sed -n '
+          s:.*\(/nix/store/[a-z0-9]*-nix-[0-9.]\+/bin/nix-env\).*:\1:p;T;q
+        ')
+        echo "nix-env is $nix_env" >&2
+        findpkg() {(
+          name=$1
+          path=$(find /nix/store \
+              -mindepth 1 -maxdepth 1 -type d -name '*-'"$name"'-*' \
+            | head -n 1 | sed s:^/mnt::)
+          if echo "$path" | grep .; then
+            echo "$name is $path" >&2
+          else
+            echo "Error: package not found: $name" >&2
+            exit 1
+          fi
+        )}
+        cacert=$(findpkg cacert)
+        coreutils=$(findpkg coreutils)
+        cp "$cacert"/etc/ssl/certs/ca-bundle.crt /mnt/root/SSL_CERT_FILE
+        env="$coreutils/bin/env SSL_CERT_FILE=/root/SSL_CERT_FILE"
+        sed -i '
+          s:^NIX_PATH=:chroot $mountPoint '"$env"' &:
+          s:^nix-env:'"$nix_env"':
+        ' nixos-install
+
+        ./nixos-install
+      ''}
+    '';
 
   doc = s:
     let b = "EOF${builtins.hashString "sha256" s}"; in
@@ -152,7 +169,7 @@ let out = {
     stockholm.users.${current-user-name}.${system}.config
       or (abort "unknown system: ${system}, user: ${current-user-name}");
 
-  install =
+  nix-install =
     { system ? current-host-name
     , target ? system
     }:
@@ -203,11 +220,8 @@ let out = {
       current-host = config.krebs.hosts.${current-host-name};
       current-user = config.krebs.users.${current-user-name};
 
-      target-host = config.krebs.hosts.${system};
-
       methods.dir = config:
         let
-          can-link = config.host.name == target-host.name;
           can-push = config.host.name == current-host.name;
           push-method = ''
             rsync \
@@ -221,11 +235,11 @@ let out = {
               ${config.path}/ \
               root@${target}:${config.target-path}
           '';
-          url = "file://${config.host.name}${config.path}";
         in
-        #if can-link then link-method else
         if can-push then push-method else
-        throw "cannot source ${url}";
+        let dir = "file://${config.host.name}${config.path}"; in
+        # /!\ revise this message when using more than just push-method
+        throw "No way to push ${dir} from ${current-host.name} to ${target}";
 
       methods.git = config:
         rootssh target ''
@@ -251,7 +265,10 @@ let out = {
     in out;
 
   rootssh = target: script:
-    "ssh root@${target} -T ${doc ''
+    let
+      flags = "-o StrictHostKeyChecking=${StrictHostKeyChecking}";
+    in
+    "ssh ${flags} root@${target} -T ${doc ''
       set -efu
       ${script}
     ''}";
diff --git a/lass/1systems/cloudkrebs.nix b/lass/1systems/cloudkrebs.nix
index 17915e087..ab24b584b 100644
--- a/lass/1systems/cloudkrebs.nix
+++ b/lass/1systems/cloudkrebs.nix
@@ -27,30 +27,9 @@ in {
 
     }
     {
-      nix.maxJobs = 1;
       sound.enable = false;
     }
   ];
 
-  krebs.build = {
-    user = config.krebs.users.lass;
-    host = config.krebs.hosts.cloudkrebs;
-    source = {
-      dir.secrets = {
-        host = config.krebs.hosts.mors;
-        path = "/home/lass/secrets/${config.krebs.build.host.name}";
-      };
-      dir.stockholm = {
-        host = config.krebs.hosts.mors;
-        path = "/home/lass/dev/stockholm";
-      };
-    };
-  };
-
-  networking.hostName = "cloudkrebs";
-
-  environment.systemPackages = [
-    pkgs.dic
-  ];
-
+  krebs.build.host = config.krebs.hosts.cloudkrebs;
 }
diff --git a/lass/1systems/echelon.nix b/lass/1systems/echelon.nix
index feaf77ef6..94c793b08 100644
--- a/lass/1systems/echelon.nix
+++ b/lass/1systems/echelon.nix
@@ -31,26 +31,23 @@ in {
 
     }
     {
-      nix.maxJobs = 1;
       sound.enable = false;
     }
+    {
+      imports = [
+        ../3modules/dnsmasq.nix
+      ];
+      lass.dnsmasq = {
+        enable = true;
+        config = ''
+          interface=retiolum
+        '';
+      };
+      krebs.iptables.tables.filter.INPUT.rules = [
+        { predicate = "-i retiolum -p udp --dport 53"; target = "ACCEPT"; }
+      ];
+    }
   ];
 
-  krebs.build = {
-    user = config.krebs.users.lass;
-    host = config.krebs.hosts.echelon;
-    source = {
-      dir.secrets = {
-        host = config.krebs.hosts.mors;
-        path = "/home/lass/secrets/${config.krebs.build.host.name}";
-      };
-      dir.stockholm = {
-        host = config.krebs.hosts.mors;
-        path = "/home/lass/dev/stockholm";
-      };
-    };
-  };
-
-  networking.hostName = config.krebs.build.host.name;
-
+  krebs.build.host = config.krebs.hosts.echelon;
 }
diff --git a/lass/1systems/mors.nix b/lass/1systems/mors.nix
index 7076c8b14..b0b8ff573 100644
--- a/lass/1systems/mors.nix
+++ b/lass/1systems/mors.nix
@@ -2,7 +2,7 @@
 
 {
   imports = [
-    ../2configs/desktop-base.nix
+    ../2configs/baseX.nix
     ../2configs/programs.nix
     ../2configs/bitcoin.nix
     ../2configs/browsers.nix
@@ -10,7 +10,6 @@
     ../2configs/pass.nix
     ../2configs/virtualbox.nix
     ../2configs/elster.nix
-    ../2configs/urxvt.nix
     ../2configs/steam.nix
     ../2configs/wine.nix
     ../2configs/texlive.nix
@@ -18,7 +17,6 @@
     #../2configs/ircd.nix
     ../2configs/chromium-patched.nix
     ../2configs/git.nix
-    #../../2configs/tv/synaptics.nix
     ../2configs/retiolum.nix
     ../2configs/wordpress.nix
     ../2configs/bitlbee.nix
@@ -26,22 +24,8 @@
     ../2configs/skype.nix
   ];
 
-  krebs.build = {
-    user = config.krebs.users.lass;
-    host = config.krebs.hosts.mors;
-    source = {
-      dir.secrets = {
-        host = config.krebs.hosts.mors;
-        path = "/home/lass/secrets/${config.krebs.build.host.name}";
-      };
-      dir.stockholm = {
-        host = config.krebs.hosts.mors;
-        path = "/home/lass/dev/stockholm";
-      };
-    };
-  };
+  krebs.build.host = config.krebs.hosts.mors;
 
-  networking.hostName = "mors";
   networking.wireless.enable = true;
 
   networking.extraHosts = ''
@@ -52,8 +36,6 @@
     10.243.206.102 apanowicz.de
   '';
 
-  nix.maxJobs = 4;
-
   hardware.enableAllFirmware = true;
   nixpkgs.config.allowUnfree = true;
 
@@ -159,11 +141,6 @@
     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 ];
@@ -210,9 +187,19 @@
       ];
     };
   };
+
   #touchpad config
   services.xserver.synaptics = {
     enable = true;
+    accelFactor = "0.035";
+    additionalOptions = ''
+      Option "FingerHigh" "60"
+      Option "FingerLow"  "60"
+    '';
     tapButtons = false;
+    twoFingerScroll = true;
   };
+
+  #for google hangout
+  users.extraUsers.gm.extraGroups = [ "audio" "video" ];
 }
diff --git a/lass/1systems/test-arch.nix b/lass/1systems/test-arch.nix
new file mode 100644
index 000000000..0ab9da2f3
--- /dev/null
+++ b/lass/1systems/test-arch.nix
@@ -0,0 +1,36 @@
+{ config, lib, pkgs, ... }:
+
+let
+  inherit (import ../4lib { inherit pkgs lib; }) getDefaultGateway;
+  inherit (lib) head;
+
+in {
+  imports = [
+    ../2configs/base.nix
+    {
+      boot.loader.grub = {
+        device = "/dev/sda";
+        splashImage = null;
+      };
+
+      boot.initrd.availableKernelModules = [
+        "ata_piix"
+        "vmw_pvscsi"
+      ];
+
+      fileSystems."/" = {
+        device = "/dev/sda1";
+      };
+    }
+    {
+      networking.dhcpcd.allowInterfaces = [
+        "enp*"
+      ];
+    }
+    {
+      sound.enable = false;
+    }
+  ];
+
+  krebs.build.host = config.krebs.hosts.test-arch;
+}
diff --git a/lass/1systems/test-centos6.nix b/lass/1systems/test-centos6.nix
new file mode 100644
index 000000000..7270c2262
--- /dev/null
+++ b/lass/1systems/test-centos6.nix
@@ -0,0 +1,30 @@
+{ config, lib, pkgs, ... }:
+
+let
+  inherit (import ../4lib { inherit pkgs lib; }) getDefaultGateway;
+  inherit (lib) head;
+
+  ip = "168.235.148.52";
+in {
+  imports = [
+    ../2configs/base.nix
+    ../2configs/os-templates/CAC-CentOS-6.5-64bit.nix
+    {
+      networking.interfaces.enp11s0.ip4 = [
+        {
+          address = ip;
+          prefixLength = 24;
+        }
+      ];
+      networking.defaultGateway = getDefaultGateway ip;
+      networking.nameservers = [
+        "8.8.8.8"
+      ];
+    }
+    {
+      sound.enable = false;
+    }
+  ];
+
+  krebs.build.host = config.krebs.hosts.test-centos6;
+}
diff --git a/lass/1systems/test-centos7.nix b/lass/1systems/test-centos7.nix
new file mode 100644
index 000000000..91bd3e0fe
--- /dev/null
+++ b/lass/1systems/test-centos7.nix
@@ -0,0 +1,31 @@
+{ config, lib, pkgs, ... }:
+
+let
+  inherit (import ../4lib { inherit pkgs lib; }) getDefaultGateway;
+  inherit (lib) head;
+
+  ip = "168.235.145.85";
+in {
+  imports = [
+    ../2configs/base.nix
+    ../2configs/os-templates/CAC-CentOS-7-64bit.nix
+    {
+      networking.interfaces.enp2s1.ip4 = [
+        {
+          address = ip;
+          prefixLength = 24;
+        }
+      ];
+      networking.defaultGateway = getDefaultGateway ip;
+      networking.nameservers = [
+        "8.8.8.8"
+      ];
+
+    }
+    {
+      sound.enable = false;
+    }
+  ];
+
+  krebs.build.host = config.krebs.hosts.test-centos7;
+}
diff --git a/lass/1systems/uriel.nix b/lass/1systems/uriel.nix
index 62338d054..1b008cbfd 100644
--- a/lass/1systems/uriel.nix
+++ b/lass/1systems/uriel.nix
@@ -3,11 +3,10 @@
 with builtins;
 {
   imports = [
-    ../2configs/desktop-base.nix
+    ../2configs/baseX.nix
     ../2configs/browsers.nix
     ../2configs/games.nix
     ../2configs/pass.nix
-    ../2configs/urxvt.nix
     ../2configs/bird.nix
     ../2configs/git.nix
     ../2configs/chromium-patched.nix
@@ -25,26 +24,9 @@ with builtins;
     }
   ];
 
-  krebs.build = {
-    user = config.krebs.users.lass;
-    target = "root@uriel";
-    host = config.krebs.hosts.uriel;
-    source = {
-      dir.secrets = {
-        host = config.krebs.hosts.mors;
-        path = "/home/lass/secrets/${config.krebs.build.host.name}";
-      };
-      dir.stockholm = {
-        host = config.krebs.hosts.mors;
-        path = "/home/lass/dev/stockholm";
-      };
-    };
-  };
-
-  networking.hostName = "uriel";
+  krebs.build.host = config.krebs.hosts.uriel;
 
   networking.wireless.enable = true;
-  nix.maxJobs = 2;
 
   hardware.enableAllFirmware = true;
   nixpkgs.config.allowUnfree = true;
@@ -65,8 +47,6 @@ with builtins;
     initrd.availableKernelModules = [ "xhci_hcd" "ehci_pci" "ahci" "usb_storage" ];
     #kernelModules = [ "kvm-intel" "msr" ];
     kernelModules = [ "msr" ];
-    extraModprobeConfig = ''
-    '';
   };
   fileSystems = {
     "/" = {
@@ -93,11 +73,4 @@ with builtins;
       Option "FingerLow"  "60"
     '';
   };
-
-  environment.systemPackages = with pkgs; [
-  ];
-
-  #for google hangout
-
-  users.extraUsers.google.extraGroups = [ "audio" "video" ];
 }
diff --git a/lass/2configs/base.nix b/lass/2configs/base.nix
index f313054d9..6fa9c5b2d 100644
--- a/lass/2configs/base.nix
+++ b/lass/2configs/base.nix
@@ -38,14 +38,28 @@ with lib;
     }
   ];
 
+  networking.hostName = config.krebs.build.host.name;
+  nix.maxJobs = config.krebs.build.host.cores;
+
   krebs = {
     enable = true;
     search-domain = "retiolum";
     exim-retiolum.enable = true;
-    build.source = {
-      git.nixpkgs = {
-        url = https://github.com/Lassulus/nixpkgs;
-        rev = "b9270a2e8ac3d2cf4c95075a9529528aa1d859da";
+    build = {
+      user = config.krebs.users.lass;
+      source = {
+        git.nixpkgs = {
+          url = https://github.com/Lassulus/nixpkgs;
+          rev = "33bdc011f5360288cd10b9fda90da2950442b2ab";
+        };
+        dir.secrets = {
+          host = config.krebs.hosts.mors;
+          path = "/home/lass/secrets/${config.krebs.build.host.name}";
+        };
+        dir.stockholm = {
+          host = config.krebs.hosts.mors;
+          path = "/home/lass/stockholm";
+        };
       };
     };
   };
@@ -82,6 +96,9 @@ with lib;
 
   #network
     iptables
+
+  #stuff for dl
+    aria2
   ];
 
   programs.bash = {
@@ -123,12 +140,6 @@ with lib;
     "sendmail"
   ];
 
-  #services.gitolite = {
-  #  enable = true;
-  #  dataDir = "/home/gitolite";
-  #  adminPubkey = config.sshKeys.lass.pub;
-  #};
-
   services.openssh = {
     enable = true;
     hostKeys = [
diff --git a/lass/2configs/desktop-base.nix b/lass/2configs/baseX.nix
similarity index 98%
rename from lass/2configs/desktop-base.nix
rename to lass/2configs/baseX.nix
index 4e693997d..1f5c3de55 100644
--- a/lass/2configs/desktop-base.nix
+++ b/lass/2configs/baseX.nix
@@ -5,6 +5,7 @@ let
 in {
   imports = [
     ./base.nix
+    ./urxvt.nix
   ];
 
   time.timeZone = "Europe/Berlin";
@@ -30,6 +31,7 @@ in {
     powertop
     sxiv
     much
+    push
 
   #window manager stuff
     haskellPackages.xmobar
diff --git a/lass/2configs/newsbot-js.nix b/lass/2configs/newsbot-js.nix
new file mode 100644
index 000000000..211b29780
--- /dev/null
+++ b/lass/2configs/newsbot-js.nix
@@ -0,0 +1,202 @@
+{ config, pkgs, ... }:
+
+let
+  newsfile = pkgs.writeText "feeds" ''
+    aje|http://www.aljazeera.com/Services/Rss/?PostingId=2007731105943979989|#news
+    aktuelle_themen|http://bundestag.de/service/rss/Bundestag_Aktuelle_Themen.rss|#news #bundestag
+    allafrica|http://allafrica.com/tools/headlines/rdf/latest/headlines.rdf|#news
+    anon|http://anoninsiders.net/feed/|#news
+    antirez|http://antirez.com/rss|#news
+    arbor|http://feeds2.feedburner.com/asert/|#news
+    archlinux|http://www.archlinux.org/feeds/news/|#news
+    ars|http://feeds.arstechnica.com/arstechnica/index?format=xml|#news
+    asiaone_asia|http://news.asiaone.com/rss/asia|#news
+    asiaone_business|http://business.asiaone.com/rss.xml|#news
+    asiaone_sci|http://news.asiaone.com/rss/science-and-tech|#news
+    asiaone_world|http://news.asiaone.com/rss/world|#news
+    augustl|http://augustl.com/atom.xml|#news
+    bbc|http://feeds.bbci.co.uk/news/rss.xml|#news
+    bdt_drucksachen|http://www.bundestag.de/dip21rss/bundestag_drucksachen.rss|#news #bundestag
+    bdt_plenarproto|http://www.bundestag.de/rss_feeds/plenarprotokolle.rss|#news #bundestag
+    bdt_pressemitteilungen|http://bundestag.de/service/rss/Bundestag_Presse.rss|#news #bundestag
+    bdt_wd|http://bundestag.de/service/rss/Bundestag_WD.rss|#news #bundestag
+    bitcoinpakistan|https://bitcoinspakistan.com/feed/|#news #financial
+    cancer|http://feeds.feedburner.com/ncinewsreleases?format=xml|#news
+    carta|http://feeds2.feedburner.com/carta-standard-rss|#news
+    catholic_news|http://feeds.feedburner.com/catholicnewsagency/dailynews|#news
+    cbc_busi|http://rss.cbc.ca/lineup/business.xml|#news
+    cbc_offbeat|http://www.cbc.ca/cmlink/rss-offbeat|#news
+    cbc_pol|http://rss.cbc.ca/lineup/politics.xml|#news
+    cbc_tech|http://rss.cbc.ca/lineup/technology.xml|#news
+    cbc_top|http://rss.cbc.ca/lineup/topstories.xml|#news
+    ccc|http://www.ccc.de/rss/updates.rdf|#news
+    chan_b|https://boards.4chan.org/b/index.rss|#brainfuck
+    chan_biz|https://boards.4chan.org/biz/index.rss|#news #brainfuck
+    chan_int|https://boards.4chan.org/int/index.rss|#news #brainfuck
+    cna|http://www.channelnewsasia.com/starterkit/servlet/cna/rss/home.xml|#news
+    coinspotting|http://coinspotting.com/rss|#news #financial
+    cryptanalysis|https://cryptanalys.is/rss.php|#news
+    cryptocoinsnews|http://www.cryptocoinsnews.com/feed/|#news #financial
+    cryptogon|http://www.cryptogon.com/?feed=rss2|#news
+    csm|http://rss.csmonitor.com/feeds/csm|#news
+    csm_world|http://rss.csmonitor.com/feeds/world|#news
+    cyberguerrilla|https://www.cyberguerrilla.org/a/2012/?feed=rss2|#news
+    danisch|http://www.danisch.de/blog/feed/|#news
+    dod|http://www.defense.gov/news/afps2.xml|#news
+    dwn|http://deutsche-wirtschafts-nachrichten.de/feed/customfeed/|#news
+    ecat|http://ecat.com/feed|#news
+    eia_press|http://www.eia.gov/rss/press_rss.xml|#news
+    eia_today|http://www.eia.gov/rss/todayinenergy.xml|#news
+    embargowatch|https://embargowatch.wordpress.com/feed/|#news
+    ethereum-comments|http://blog.ethereum.org/comments/feed|#news
+    ethereum|http://blog.ethereum.org/feed|#news
+    europa_ric|http://ec.europa.eu/research/infocentre/rss/infocentre-rss.xml|#news
+    eu_survei|http://www.eurosurveillance.org/public/RSSFeed/RSS.aspx|#news
+    exploitdb|http://www.exploit-db.com/rss.xml|#news
+    fars|http://www.farsnews.com/rss.php|#news #test
+    faz_feui|http://www.faz.net/rss/aktuell/feuilleton/|#news
+    faz_politik|http://www.faz.net/rss/aktuell/politik/|#news
+    faz_wirtschaft|http://www.faz.net/rss/aktuell/wirtschaft/|#news #financial
+    fbi|http://www.fbi.gov/homepage/RSS|#news #bullerei
+    fbi_news|http://www.fbi.gov/news/news_blog/rss.xml|#news
+    fbi_press|http://www.fbi.gov/news/current/rss.xml|#news #bullerei
+    fbi_stories|http://www.fbi.gov/news/stories/all-stories/rss.xml|#news #bullerei
+    fedreserve|http://www.federalreserve.gov/feeds/press_all.xml|#news #financial
+    fefe|http://blog.fefe.de/rss.xml|#news
+    forbes|http://www.forbes.com/forbes/feed2/|#news
+    forbes_realtime|http://www.forbes.com/real-time/feed2/|#news
+    fox|http://feeds.foxnews.com/foxnews/latest|#news
+    geheimorganisation|http://geheimorganisation.org/feed/|#news
+    GerForPol|http://www.german-foreign-policy.com/de/news/rss-2.0|#news
+    gmanet|http://www.gmanetwork.com/news/rss/news|#news
+    golem|http://www.golem.de/rss.php?feed=RSS1.0|#news
+    google|http://news.google.com/?output=rss|#news
+    greenpeace|http://feeds.feedburner.com/GreenpeaceNews|#news
+    guardian_uk|http://feeds.theguardian.com/theguardian/uk-news/rss|#news
+    gulli|http://ticker.gulli.com/rss/|#news
+    handelsblatt|http://www.handelsblatt.com/contentexport/feed/schlagzeilen|#news #financial
+    heise|http://heise.de.feedsportal.com/c/35207/f/653902/index.rss|#news
+    hindu_business|http://www.thehindubusinessline.com/?service=rss|#news #financial
+    hindu|http://www.thehindu.com/?service=rss|#news
+    hintergrund|http://www.hintergrund.de/index.php?option=com_bca-rss-syndicator&feed_id=8|#news
+    ign|http://feeds.ign.com/ign/all|#news
+    independent|http://www.independent.com/rss/headlines/|#news
+    indymedia|http://de.indymedia.org/RSS/newswire.xml|#news
+    info_libera|http://www.informationliberation.com/rss.xml|#news
+    klagen-gegen-rundfuckbeitrag|http://klagen-gegen-rundfunkbeitrag.blogspot.com/feeds/posts/default|#news
+    korea_herald|http://www.koreaherald.com/rss_xml.php|#news
+    linuxinsider|http://www.linuxinsider.com/perl/syndication/rssfull.pl|#news
+    lisp|http://planet.lisp.org/rss20.xml|#news
+    liveleak|http://www.liveleak.com/rss|#news
+    lolmythesis|http://lolmythesis.com/rss|#news
+    LtU|http://lambda-the-ultimate.org/rss.xml|#news
+    lukepalmer|http://lukepalmer.wordpress.com/feed/|#news
+    mit|http://web.mit.edu/newsoffice/rss-feeds.feed?type=rss|#news
+    mongrel2_master|https://github.com/zedshaw/mongrel2/commits/master.atom|#news
+    nds|http://www.nachdenkseiten.de/?feed=atom|#news
+    netzpolitik|https://netzpolitik.org/feed/|#news
+    newsbtc|http://newsbtc.com/feed/|#news #financial
+    nnewsg|http://www.net-news-global.net/rss/rssfeed.xml|#news
+    npr_busi|http://www.npr.org/rss/rss.php?id=1006|#news
+    npr_headlines|http://www.npr.org/rss/rss.php?id=1001|#news
+    npr_pol|http://www.npr.org/rss/rss.php?id=1012|#news
+    npr_world|http://www.npr.org/rss/rss.php?id=1004|#news
+    nsa|http://www.nsa.gov/rss.shtml|#news #bullerei
+    nytimes|http://rss.nytimes.com/services/xml/rss/nyt/World.xml|#news
+    painload|https://github.com/krebscode/painload/commits/master.atom|#news
+    phys|http://phys.org/rss-feed/|#news
+    piraten|https://www.piratenpartei.de/feed/|#news
+    polizei_berlin|http://www.berlin.de/polizei/presse-fahndung/_rss_presse.xml|#news #bullerei
+    presse_polizei|http://www.presseportal.de/rss/polizei.rss2|#news #bullerei
+    presseportal|http://www.presseportal.de/rss/presseportal.rss2|#news
+    prisonplanet|http://prisonplanet.com/feed.rss|#news
+    proofmarket|https://proofmarket.org/feed_problem|#news
+    rawstory|http://www.rawstory.com/rs/feed/|#news
+    reddit_4chan|http://www.reddit.com/r/4chan/new/.rss|#news #brainfuck
+    reddit_anticonsum|http://www.reddit.com/r/Anticonsumption/new/.rss|#news
+    reddit_btc|http://www.reddit.com/r/Bitcoin/new/.rss|#news #financial
+    reddit_prog|http://www.reddit.com/r/programming/new/.rss|#news
+    reddit_tpp|http://www.reddit.com/r/twitchplayspokemon/.rss|#news #tpp
+    reddit_world|http://www.reddit.com/r/worldnews/.rss|#news
+    r-ethereum|http://www.reddit.com/r/ethereum/.rss|#news
+    reuters|http://feeds.reuters.com/Reuters/worldNews|#news
+    reuters-odd|http://feeds.reuters.com/reuters/oddlyEnoughNews?format=xml|#news
+    rt|http://rt.com/rss/news/|#news
+    schallurauch|http://feeds.feedburner.com/SchallUndRauch|#news
+    sciencemag|http://news.sciencemag.org/rss/current.xml|#news
+    scmp|http://www.scmp.com/rss/91/feed|#news
+    sec-db|http://feeds.security-database.com/SecurityDatabaseToolsWatch|#news
+    shackspace|http://shackspace.de/?feed=rss2|#news
+    shz_news|http://www.shz.de/nachrichten/newsticker/rss|#news
+    sky_busi|http://news.sky.com/feeds/rss/business.xml|#news
+    sky_pol|http://news.sky.com/feeds/rss/politics.xml|#news
+    sky_strange|http://news.sky.com/feeds/rss/strange.xml|#news
+    sky_tech|http://news.sky.com/feeds/rss/technology.xml|#news
+    sky_world|http://news.sky.com/feeds/rss/world.xml|#news
+    slashdot|http://rss.slashdot.org/Slashdot/slashdot|#news
+    slate|http://feeds.slate.com/slate|#news
+    spiegel_eil|http://www.spiegel.de/schlagzeilen/eilmeldungen/index.rss|#news
+    spiegelfechter|http://feeds.feedburner.com/DerSpiegelfechter?format=xml|#news
+    spiegel_top|http://www.spiegel.de/schlagzeilen/tops/index.rss|#news
+    standardmedia_ke|http://www.standardmedia.co.ke/rss/headlines.php|#news
+    stern|http://www.stern.de/feed/standard/all/|#news
+    stz|http://www.stuttgarter-zeitung.de/rss/topthemen.rss.feed|#news
+    sz_politik|http://rss.sueddeutsche.de/rss/Politik|#news
+    sz_wirtschaft|http://rss.sueddeutsche.de/rss/Wirtschaft|#news #financial
+    sz_wissen|http://suche.sueddeutsche.de/rss/Wissen|#news
+    tagesschau|http://www.tagesschau.de/newsticker.rdf|#news
+    taz|http://taz.de/Themen-des-Tages/!p15;rss/|#news
+    telegraph_finance|http://www.telegraph.co.uk/finance/rss|#news #financial
+    telegraph_pol|http://www.telegraph.co.uk/news/politics/rss|#news
+    telegraph_uk|http://www.telegraph.co.uk/news/uknews/rss|#news
+    telegraph_world|http://www.telegraph.co.uk/news/worldnews/rss|#news
+    telepolis|http://www.heise.de/tp/rss/news-atom.xml|#news
+    the_insider|http://www.theinsider.org/rss/news/headlines-xml.asp|#news
+    tigsource|http://www.tigsource.com/feed/|#news
+    times|http://www.thetimes.co.uk/tto/news/rss|#news
+    tinc|http://tinc-vpn.org/news/index.rss|#news
+    topix_b|http://www.topix.com/rss/wire/de/berlin|#news
+    torr_bits|http://feeds.feedburner.com/TorrentfreakBits|#news
+    torrentfreak|http://feeds.feedburner.com/Torrentfreak|#news
+    torr_news|http://feed.torrentfreak.com/Torrentfreak/|#news
+    travel_warnings|http://feeds.travel.state.gov/ca/travelwarnings-alerts|#news
+    truther|http://truthernews.wordpress.com/feed/|#news
+    un_afr|http://www.un.org/apps/news/rss/rss_africa.asp|#news
+    un_am|http://www.un.org/apps/news/rss/rss_americas.asp|#news
+    un_eu|http://www.un.org/apps/news/rss/rss_europe.asp|#news
+    un_me|http://www.un.org/apps/news/rss/rss_mideast.asp|#news
+    un_pac|http://www.un.org/apps/news/rss/rss_asiapac.asp|#news
+    un_top|http://www.un.org/apps/news/rss/rss_top.asp|#news
+    us_math_society|http://www.ams.org/cgi-bin/content/news_items.cgi?rss=1|#news
+    vimperator|https://sites.google.com/a/vimperator.org/www/blog/posts.xml|#news
+    weechat|http://dev.weechat.org/feed/atom|#news
+    wired_sci|http://www.wired.com/category/science/feed/|#news
+    wp_world|http://feeds.washingtonpost.com/rss/rss_blogpost|#news
+    xkcd|https://xkcd.com/rss.xml|#news
+    zdnet|http://www.zdnet.com/news/rss.xml|#news
+
+    chan_g|https://boards.4chan.org/g/index.rss|#news
+    chan_x|https://boards.4chan.org/x/index.rss|#news
+    chan_sci|https://boards.4chan.org/sci/index.rss|#news
+    reddit_consp|http://reddit.com/r/conspiracy/.rss|#news
+    reddit_sci|http://www.reddit.com/r/science/.rss|#news
+    reddit_tech|http://www.reddit.com/r/technology/.rss|#news
+    reddit_nix|http://www.reddit.com/r/nixos/.rss|#news
+    reddit_haskell|http://www.reddit.com/r/haskell/.rss|#news
+    hackernews|https://news.ycombinator.com/rss|#news
+  '';
+in {
+  imports = [
+    ../3modules/newsbot-js.nix
+  ];
+  environment.systemPackages = [
+    pkgs.newsbot-js
+  ];
+  lass.newsbot-js = {
+    enable = true;
+    ircServer = "localhost";
+    feeds = newsfile;
+    urlShortenerHost = "go";
+    urlShortenerPort = "80";
+  };
+}
diff --git a/lass/2configs/os-templates/CAC-CentOS-6.5-64bit.nix b/lass/2configs/os-templates/CAC-CentOS-6.5-64bit.nix
new file mode 100644
index 000000000..b5ec722a0
--- /dev/null
+++ b/lass/2configs/os-templates/CAC-CentOS-6.5-64bit.nix
@@ -0,0 +1,47 @@
+_:
+
+{
+  boot.loader.grub = {
+    device = "/dev/sda";
+    splashImage = null;
+  };
+
+  boot.initrd.availableKernelModules = [
+    "ata_piix"
+    "vmw_pvscsi"
+  ];
+
+  fileSystems."/" = {
+    device = "/dev/VolGroup/lv_root";
+    fsType = "ext4";
+  };
+
+  fileSystems."/boot" = {
+    device = "/dev/sda1";
+    fsType = "ext4";
+  };
+
+  swapDevices = [
+    { device = "/dev/VolGroup/lv_swap"; }
+  ];
+
+  users.extraGroups = {
+    # ● systemd-tmpfiles-setup.service - Create Volatile Files and Directories
+    #    Loaded: loaded (/nix/store/2l33gg7nmncqkpysq9f5fxyhlw6ncm2j-systemd-217/example/systemd/system/systemd-tmpfiles-setup.service)
+    #    Active: failed (Result: exit-code) since Mon 2015-03-16 10:29:18 UTC; 4s ago
+    #      Docs: man:tmpfiles.d(5)
+    #            man:systemd-tmpfiles(8)
+    #   Process: 19272 ExecStart=/nix/store/2l33gg7nmncqkpysq9f5fxyhlw6ncm2j-systemd-217/bin/systemd-tmpfiles --create --remove --boot --exclude-prefix=/dev (code=exited, status=1/FAILURE)
+    #  Main PID: 19272 (code=exited, status=1/FAILURE)
+    #
+    # Mar 16 10:29:17 cd systemd-tmpfiles[19272]: [/usr/lib/tmpfiles.d/legacy.conf:26] Unknown group 'lock'.
+    # Mar 16 10:29:18 cd systemd-tmpfiles[19272]: Two or more conflicting lines for /var/log/journal configured, ignoring.
+    # Mar 16 10:29:18 cd systemd-tmpfiles[19272]: Two or more conflicting lines for /var/log/journal/7b35116927d74ea58785e00b47ac0f0d configured, ignoring.
+    # Mar 16 10:29:18 cd systemd[1]: systemd-tmpfiles-setup.service: main process exited, code=exited, status=1/FAILURE
+    # Mar 16 10:29:18 cd systemd[1]: Failed to start Create Volatile Files and Directories.
+    # Mar 16 10:29:18 cd systemd[1]: Unit systemd-tmpfiles-setup.service entered failed state.
+    # Mar 16 10:29:18 cd systemd[1]: systemd-tmpfiles-setup.service failed.
+    # warning: error(s) occured while switching to the new configuration
+    lock.gid = 10001;
+  };
+}
diff --git a/lass/2configs/sshkeys.nix b/lass/2configs/sshkeys.nix
deleted file mode 100644
index f6081cf37..000000000
--- a/lass/2configs/sshkeys.nix
+++ /dev/null
@@ -1,11 +0,0 @@
-{ config, ... }:
-
-{
-  imports = [
-    ../3modules/sshkeys.nix
-  ];
-
-  config.sshKeys.lass.pub = "ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAp83zynhIueJJsWlSEykVSBrrgBFKq38+vT8bRfa+csqyjZBl2SQFuCPo+Qbh49mwchpZRshBa9jQEIGqmXxv/PYdfBFQuOFgyUq9ZcTZUXqeynicg/SyOYFW86iiqYralIAkuGPfQ4howLPVyjTZtWeEeeEttom6p6LMY5Aumjz2em0FG0n9rRFY2fBzrdYAgk9C0N6ojCs/Gzknk9SGntA96MDqHJ1HXWFMfmwOLCnxtE5TY30MqSmkrJb7Fsejwjoqoe9Y/mCaR0LpG2cStC1+37GbHJNH0caCMaQCX8qdfgMVbWTVeFWtV6aWOaRgwLrPDYn4cHWQJqTfhtPrNQ== lass@mors";
-
-  config.sshKeys.uriel.pub = "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDExWuRcltGM2FqXO695nm6/QY3wU3r1bDTyCpMrLfUSym7TxcXDSmZSWcueexPXV6GENuUfjJPZswOdWqIo5u2AXw9t0aGvwEDmI6uJ7K5nzQOsXIneGMdYuoOaAzWI8pxZ4N+lIP1HsOYttIPDp8RwU6kyG+Ud8mnVHWSTO13C7xC9vePnDP6b+44nHS691Zj3X/Cq35Ls0ISC3EM17jreucdP62L3TKk2R4NCm3Sjqj+OYEv0LAqIpgqSw5FypTYQgNByxRcIcNDlri63Q1yVftUP1338UiUfxtraUu6cqa2CdsHQmtX5mTNWEluVWO3uUKTz9zla3rShC+d3qvr lass@uriel";
-}
diff --git a/lass/3modules/default.nix b/lass/3modules/default.nix
index 9de987bf3..b081dc3cc 100644
--- a/lass/3modules/default.nix
+++ b/lass/3modules/default.nix
@@ -1,7 +1,13 @@
 _:
-
 {
   imports = [
     ./xresources.nix
+    ./bitlbee.nix
+    ./folderPerms.nix
+    ./go.nix
+    ./newsbot-js.nix
+    ./per-user.nix
+    ./urxvtd.nix
+    ./xresources.nix
   ];
 }
diff --git a/lass/3modules/dnsmasq.nix b/lass/3modules/dnsmasq.nix
new file mode 100644
index 000000000..99c165479
--- /dev/null
+++ b/lass/3modules/dnsmasq.nix
@@ -0,0 +1,55 @@
+{ config, lib, pkgs, ... }:
+
+with builtins;
+with lib;
+
+let
+  cfg = config.lass.dnsmasq;
+
+  out = {
+    options.lass.dnsmasq = api;
+    config = mkIf cfg.enable imp;
+  };
+
+  api = {
+    enable = mkEnableOption "dnsmasq";
+    config = mkOption {
+      type = types.str;
+      #TODO: find a good default
+      default = ''
+      '';
+      description = "configuration dnsmasq is started with";
+    };
+  };
+
+  configFile = pkgs.writeText "dnsmasq.conf" cfg.config;
+
+  imp = {
+    #users.extraUsers.go = {
+    #  name = "go";
+    #  uid = 42774411; #genid go
+    #  description = "go url shortener user";
+    #  home = "/var/lib/go";
+    #  createHome = true;
+    #};
+
+    systemd.services.dnsmasq = {
+      description = "dnsmasq";
+      after = [ "network.target" ];
+      wantedBy = [ "multi-user.target" ];
+
+      path = with pkgs; [
+        dnsmasq
+      ];
+
+
+      restartIfChanged = true;
+
+      serviceConfig = {
+        Restart = "always";
+        ExecStart = "${pkgs.dnsmasq}/bin/dnsmasq -k -C ${configFile}";
+      };
+    };
+  };
+
+in out
diff --git a/lass/3modules/newsbot-js.nix b/lass/3modules/newsbot-js.nix
new file mode 100644
index 000000000..6d87d256d
--- /dev/null
+++ b/lass/3modules/newsbot-js.nix
@@ -0,0 +1,87 @@
+{ config, lib, pkgs, ... }:
+
+with builtins;
+with lib;
+
+let
+  cfg = config.lass.newsbot-js;
+
+  out = {
+    options.lass.newsbot-js = api;
+    config = mkIf cfg.enable imp;
+  };
+
+  api = {
+    enable = mkEnableOption "Enable krebs newsbot";
+    ircServer = mkOption {
+      type = types.str;
+      default = "echelon.retiolum";
+      description = "to which server the bot should connect";
+    };
+    channel = mkOption {
+      type = types.str;
+      default = "#news";
+      description = "post the news in this channel";
+    };
+    masterNick = mkOption {
+      type = types.str;
+      default = "knews";
+      description = "nickname of the master bot";
+    };
+    feeds = mkOption {
+      type = types.path;
+      description = ''
+        file with feeds to post
+        format:
+        $nick|$feedURI
+      '';
+    };
+    urlShortenerHost = mkOption {
+      type = types.str;
+      default = "echelon";
+      description = "what server to use for url shortening, host";
+    };
+    urlShortenerPort = mkOption {
+      type = types.str;
+      default = "80";
+      description = "what server to use for url shortening, port";
+    };
+  };
+
+  imp = {
+    users.extraUsers.newsbot-js = {
+      name = "newsbot-js";
+      uid = 1616759810; #genid newsbot-js
+      description = "newsbot-js user";
+      home = "/var/empty";
+    };
+
+    systemd.services.newsbot-js = {
+      description = "krebs newsbot";
+      after = [ "network.target" ];
+      wantedBy = [ "multi-user.target" ];
+
+      path = with pkgs; [
+        newsbot-js
+      ];
+
+      environment = {
+        irc_server = cfg.ircServer;
+        master_nick = cfg.masterNick;
+        news_channel = cfg.channel;
+        feeds_file = cfg.feeds;
+        url_shortener_host = cfg.urlShortenerHost;
+        url_shortener_port = cfg.urlShortenerPort;
+      };
+
+      restartIfChanged = true;
+
+      serviceConfig = {
+        User = "newsbot-js";
+        Restart = "always";
+        ExecStart = "${pkgs.newsbot-js}/bin/newsbot";
+      };
+    };
+  };
+
+in out
diff --git a/lass/3modules/sshkeys.nix b/lass/3modules/sshkeys.nix
deleted file mode 100644
index 5f1c60668..000000000
--- a/lass/3modules/sshkeys.nix
+++ /dev/null
@@ -1,26 +0,0 @@
-{ lib, ... }:
-
-with lib;
-
-{
-  options = {
-    sshKeys = mkOption {
-      type = types.attrsOf (types.submodule (
-      { config, ... }:
-      {
-        options = {
-          pub = mkOption {
-            type = types.str;
-            description = "Public part of the ssh key.";
-          };
-
-          priv = mkOption {
-            type = types.str;
-            description = "Private part of the ssh key.";
-          };
-        };
-      }));
-      description = "collection of ssh-keys";
-    };
-  };
-}
diff --git a/lass/4lib/default.nix b/lass/4lib/default.nix
index 2e493177d..6a8a28972 100644
--- a/lass/4lib/default.nix
+++ b/lass/4lib/default.nix
@@ -1,12 +1,8 @@
 { lib, pkgs, ... }:
 
-let
-  krebs = import ../../krebs/4lib { inherit lib; };
-in
+with lib;
 
-with krebs;
-
-krebs // rec {
+{
 
   simpleScript = name: content:
     pkgs.stdenv.mkDerivation {
diff --git a/lass/5pkgs/newsbot-js/default.nix b/lass/5pkgs/newsbot-js/default.nix
index 7758b04db..ace2a976f 100644
--- a/lass/5pkgs/newsbot-js/default.nix
+++ b/lass/5pkgs/newsbot-js/default.nix
@@ -26,8 +26,8 @@ in nodePackages.buildNodePackage {
 
   src = fetchgit {
     url = "http://cgit.echelon/newsbot-js/";
-    rev = "cd32ef7b39819f53c7125b22c594202724cc8754";
-    sha256 = "425e800f7638a5679ed8a049614a7533f3c8dd09659061885240dc93952ff0ae";
+    rev = "b22729670236bfa6491207d57c5d7565137625ca";
+    sha256 = "8ff00de56d85543399776c82d41d92ccc68000e5dce0f008d926748e188f3c69";
   };
 
   phases = [
diff --git a/tv/1systems/cd.nix b/tv/1systems/cd.nix
index 12e52cd11..d2b08bef7 100644
--- a/tv/1systems/cd.nix
+++ b/tv/1systems/cd.nix
@@ -114,7 +114,6 @@ with lib;
   ];
 
   environment.systemPackages = with pkgs; [
-    git # required for ./deploy, clone_or_update
     htop
     iftop
     iotop
diff --git a/tv/1systems/mkdir.nix b/tv/1systems/mkdir.nix
index 669dcc2f3..f0c7dc2a0 100644
--- a/tv/1systems/mkdir.nix
+++ b/tv/1systems/mkdir.nix
@@ -88,7 +88,6 @@ in
   ];
 
   environment.systemPackages = with pkgs; [
-    git # required for ./deploy, clone_or_update
     htop
     iftop
     iotop
diff --git a/tv/1systems/nomic.nix b/tv/1systems/nomic.nix
index 718f6ae24..210846215 100644
--- a/tv/1systems/nomic.nix
+++ b/tv/1systems/nomic.nix
@@ -64,27 +64,24 @@ with lib;
   ];
 
   boot.initrd.luks = {
-    cryptoModules = [ "aes" "sha1" "xts" ];
+    cryptoModules = [ "aes" "sha512" "xts" ];
     devices = [
-      {
-        name = "luks1";
-        device = "/dev/disk/by-uuid/cac73902-1023-4906-8e95-3a8b245337d4";
-      }
+      { name = "luks1"; device = "/dev/sda2"; }
     ];
   };
 
   fileSystems."/" =
-    { device = "/dev/disk/by-uuid/de4780fc-0473-4708-81df-299b7383274c";
+    { device = "/dev/mapper/nomic1-root";
       fsType = "btrfs";
     };
 
   fileSystems."/boot" =
-    { device = "/dev/disk/by-uuid/be3a1d80-3157-4d7c-86cc-ef01b64eff5e";
+    { device = "/dev/sda1";
       fsType = "ext4";
     };
 
   fileSystems."/home" =
-    { device = "/dev/disk/by-uuid/9db9c8ff-51da-4cbd-9f0a-0cd3333bbaff";
+    { device = "/dev/mapper/nomic1-home";
       fsType = "btrfs";
     };
 
diff --git a/tv/1systems/rmdir.nix b/tv/1systems/rmdir.nix
index 79e47c539..c52222cd1 100644
--- a/tv/1systems/rmdir.nix
+++ b/tv/1systems/rmdir.nix
@@ -84,7 +84,6 @@ in
   ];
 
   environment.systemPackages = with pkgs; [
-    git # required for ./deploy, clone_or_update
     htop
     iftop
     iotop
diff --git a/tv/1systems/wu.nix b/tv/1systems/wu.nix
index c691066cb..89ad257f0 100644
--- a/tv/1systems/wu.nix
+++ b/tv/1systems/wu.nix
@@ -37,7 +37,6 @@ with lib;
 
         # stockholm
         genid
-        git
         gnumake
         hashPassword
         lentil
diff --git a/tv/2configs/base.nix b/tv/2configs/base.nix
index 010d4b326..4de980cf1 100644
--- a/tv/2configs/base.nix
+++ b/tv/2configs/base.nix
@@ -14,6 +14,12 @@ in
   networking.hostName = config.krebs.build.host.name;
 
   imports = [
+    {
+      # stockholm dependencies
+      environment.systemPackages = with pkgs; [
+        git
+      ];
+    }
     {
       # TODO never put hashedPassword into the store
       users.extraUsers =
diff --git a/tv/2configs/test.nix b/tv/2configs/test.nix
index 409b4e9b4..f5f068d6f 100644
--- a/tv/2configs/test.nix
+++ b/tv/2configs/test.nix
@@ -1,6 +1,6 @@
 { config, lib, pkgs, ... }:
 
-with import ../4lib { inherit lib pkgs; };
+with lib;
 
 let
   out = {
diff --git a/tv/2configs/urlwatch.nix b/tv/2configs/urlwatch.nix
index c1c5d19d9..373803cc6 100644
--- a/tv/2configs/urlwatch.nix
+++ b/tv/2configs/urlwatch.nix
@@ -29,10 +29,6 @@
       # 2014-09-24 ref https://github.com/4z3/xintmap
       http://www.mathstat.dal.ca/~selinger/quipper/
 
-      # 2014-12-12 remove nixopsUnstable when nixops get's bumped to 1.3
-      # ref https://github.com/NixOS/nixpkgs/blob/master/pkgs/tools/package-management/nixops/unstable.nix
-      http://nixos.org/releases/nixops/
-
       ## other
 
       https://nixos.org/channels/nixos-unstable/git-revision
diff --git a/tv/3modules/consul.nix b/tv/3modules/consul.nix
index e764ab7b2..ccdee07f5 100644
--- a/tv/3modules/consul.nix
+++ b/tv/3modules/consul.nix
@@ -5,7 +5,7 @@
 # TODO consul-bootstrap HOST  that actually does is
 # TODO tools to inspect state of a cluster in outage state
 
-with import ../4lib { inherit lib pkgs; };
+with lib;
 let
   cfg = config.tv.consul;
 
diff --git a/tv/4lib/default.nix b/tv/4lib/default.nix
index 106535ba2..7e6b2ab17 100644
--- a/tv/4lib/default.nix
+++ b/tv/4lib/default.nix
@@ -1,20 +1,14 @@
 { lib, pkgs, ... }:
 
-let
-  krebs = import ../../krebs/4lib { inherit lib; };
-in
-
-with krebs;
-
-krebs // rec {
+lib // rec {
 
   git = import ./git.nix {
-    lib = krebs;
-    inherit pkgs;
+    inherit lib pkgs;
   };
 
   # "7.4.335" -> "74"
   majmin = with lib; x : concatStrings (take 2 (splitString "." x));
 
-  shell-escape = krebs.shell.escape;
+  # TODO deprecate shell-escape for lass
+  shell-escape = lib.shell.escape;
 }