Merge remote-tracking branch 'lass/master'

28 files changed, 326 insertions, 127 deletions

diff --git a/jeschli/1systems/brauerei/config.nix b/jeschli/1systems/brauerei/config.nix
index e4109c638..eb2bb11d2 100644
--- a/jeschli/1systems/brauerei/config.nix
+++ b/jeschli/1systems/brauerei/config.nix
@@ -79,6 +79,8 @@
     jetbrains.goland
   # document viewer
     zathura
+  # xorg
+    xorg.xbacklight
   ];
 
   # Some programs need SUID wrappers, can be configured further or are
diff --git a/jeschli/source.nix b/jeschli/source.nix
index 382dd61bc..fe1de8fd1 100644
--- a/jeschli/source.nix
+++ b/jeschli/source.nix
@@ -4,6 +4,11 @@ host@{ name, secure ? false, override ? {} }: let
               then "buildbot"
               else "jeschli";
   _file = <stockholm> + "/jeschli/1systems/${name}/source.nix";
+  pkgs = import <nixpkgs> {
+    overlays = map import [
+      <stockholm/krebs/5pkgs>
+    ];
+  };
 in
   evalSource (toString _file) [
     {
@@ -17,6 +22,7 @@ in
         jeschli = "${getEnv "HOME"}/secrets/${name}";
       };
       stockholm.file = toString <stockholm>;
+      stockholm-version.pipe = "${pkgs.stockholm}/bin/get-version";
     }
     override
   ]
diff --git a/krebs/3modules/lass/default.nix b/krebs/3modules/lass/default.nix
index 655a38030..e269d1fa1 100644
--- a/krebs/3modules/lass/default.nix
+++ b/krebs/3modules/lass/default.nix
@@ -551,6 +551,32 @@ with import <stockholm/lib>;
         };
       };
     };
+    dpdkm = {
+      ci = false;
+      external = true;
+      nets = rec {
+        retiolum = {
+          ip4.addr = "10.243.29.173";
+          ip6.addr = "42:4992:6a6d:900::1";
+          aliases = [ "dpdkm.r" ];
+          tinc.pubkey = ''
+            -----BEGIN RSA PUBLIC KEY-----
+            MIICCgKCAgEAuW31xGBdPMSS45KmsCX81yuTcDZv1z7wSpsGQiAw7RsApG0fbBDj
+            NvzWZaZpTTUueG7gtt7U9Gk8DhWYR1hNt8bLXxE5QlY+gxVjU8+caRvlv10Y9XYp
+            qZEr1n1O5R7jS1srvutPt74uiA8I3hBoeP5TXndu8tVcehjRWXPqJj4VCy9pT2gP
+            X880Z30cXm0jUIu9XKhzQU2UNaxbqRzhJTvFUG04M+0a9olsUoN7PnDV6MC5Dxzn
+            f0ZZZDgHkcx6vsSkN/C8Tik/UCXr3tS/VX6/3+PREz6Z3bPd2QfaWdowrlFQPeYa
+            bELPvuqYiq7zR/jw3vVsWX2e91goAfKH5LYKNmzJCj5yYq+knB7Wil3HgBn86zvL
+            Joj56VsuB8fQrrUxjrDetNgtdwci+yFeXkJouQRLM0r0W24liyCuBX4B6nqbj71T
+            B6rAMzhBbl1yixgf31EgiCYFSusk+jiT+hye5lAhes4gBW9GAWxGNU9zE4QeAc1w
+            tkPH/CxRIAeuPYNwmjvYI2eQH9UQkgSBa3/Kz7/KT9scbykbs8nhDHCXwT6oAp+n
+            dR5aHkuBrTQOCU3Xx5ZwU5A0T83oLExIeH8jR1h2mW1JoJDdO85dAOrIBHWnjLls
+            mqrJusBh2gbgvNqIrDaQ9J+o1vefw1QeSvcF71JjF1CEBUmTbUAp8KMCAwEAAQ==
+            -----END RSA PUBLIC KEY-----
+          '';
+        };
+      };
+    };
     xerxes = {
       cores = 2;
       nets = rec {
diff --git a/krebs/3modules/os-release.nix b/krebs/3modules/os-release.nix
index 0779feede..8f71a357f 100644
--- a/krebs/3modules/os-release.nix
+++ b/krebs/3modules/os-release.nix
@@ -5,7 +5,11 @@ let
   nixos-version = "${nixos-version-id} (${config.system.nixosCodeName})";
   nixos-pretty-name = "NixOS ${nixos-version}";
 
-  stockholm-version-id = maybeEnv "STOCKHOLM_VERSION" "unknown";
+  stockholm-version-id = let
+    eval = tryEval (removeSuffix "\n" (readFile <stockholm-version>));
+  in
+    if eval.success then eval.value else "unknown";
+
   stockholm-version = "${stockholm-version-id}";
   stockholm-pretty-name = "stockholm ${stockholm-version}";
 
diff --git a/krebs/3modules/repo-sync.nix b/krebs/3modules/repo-sync.nix
index b2e3aa7c5..45d9d81c3 100644
--- a/krebs/3modules/repo-sync.nix
+++ b/krebs/3modules/repo-sync.nix
@@ -18,10 +18,10 @@ let
             type = types.attrsOf (types.submodule ({ config, ... }: {
               options = {
                 origin = mkOption {
-                  type = types.git-source;
+                  type = types.source-types.git;
                 };
                 mirror = mkOption {
-                  type = types.git-source;
+                  type = types.source-types.git;
                 };
               };
               config = {
@@ -31,7 +31,7 @@ let
             }));
           };
           latest = mkOption {
-            type = types.nullOr types.git-source;
+            type = types.nullOr types.source-types.git;
             default = null;
           };
           timerConfig = mkOption {
diff --git a/krebs/5pkgs/simple/populate/default.nix b/krebs/5pkgs/simple/populate/default.nix
index 62e3ab216..e35423b49 100644
--- a/krebs/5pkgs/simple/populate/default.nix
+++ b/krebs/5pkgs/simple/populate/default.nix
@@ -16,12 +16,12 @@ in
 
 stdenv.mkDerivation rec {
   name = "populate";
-  version = "2.1.0";
+  version = "2.3.0";
 
   src = fetchgit {
     url = http://cgit.ni.krebsco.de/populate;
     rev = "refs/tags/v${version}";
-    sha256 = "0cr50y6h6nps0qgpmi01h0z9wzpv2704y5zgx2salk1grkmvcfmh";
+    sha256 = "05zr132k1s3a1cc879lvhb83hax7dbfmsbrnxmh7dxjcdg3yhxd7";
   };
 
   phases = [
diff --git a/krebs/5pkgs/simple/stockholm/default.nix b/krebs/5pkgs/simple/stockholm/default.nix
index 53c1ca5ba..4d15e7ac2 100644
--- a/krebs/5pkgs/simple/stockholm/default.nix
+++ b/krebs/5pkgs/simple/stockholm/default.nix
@@ -216,7 +216,6 @@
   init.env = pkgs.writeText "init.env" /* sh */ ''
 
     export HOSTNAME="$(${pkgs.nettools}/bin/hostname)"
-    export STOCKHOLM_VERSION="''${STOCKHOLM_VERSION-$(${cmds.get-version})}"
 
     export quiet
     export system
@@ -251,7 +250,6 @@
             "$target_user@$target_host" -p "$target_port" \
             cd "$target_path/stockholm" \; \
             NIX_PATH=$(${pkgs.quote}/bin/quote "$target_path") \
-            STOCKHOLM_VERSION=$(${pkgs.quote}/bin/quote "$STOCKHOLM_VERSION") \
             nix-shell --run "$(${pkgs.quote}/bin/quote "
               ${lib.concatStringsSep " " (lib.mapAttrsToList
                 (name: opt: /* sh */
diff --git a/krebs/5pkgs/simple/urlwatch/default.nix b/krebs/5pkgs/simple/urlwatch/default.nix
index ebf872568..64f3ad1ac 100644
--- a/krebs/5pkgs/simple/urlwatch/default.nix
+++ b/krebs/5pkgs/simple/urlwatch/default.nix
@@ -2,13 +2,13 @@
 
 python3Packages.buildPythonApplication rec {
   name = "urlwatch-${version}";
-  version = "2.7";
+  version = "2.8";
 
   src = fetchFromGitHub {
     owner  = "thp";
     repo   = "urlwatch";
     rev    = version;
-    sha256 = "0fx964z73yv08b1lpymmjsigf6929zx9ax5bp34rcf2c5gk11l5m";
+    sha256 = "1nja7n6pc45azd3l1xyvav89855lvcgwabrvf34rps81dbl8cnl4";
   };
 
   propagatedBuildInputs = with python3Packages; [
diff --git a/krebs/source.nix b/krebs/source.nix
index c2fbbc5f8..7e0ea7e47 100644
--- a/krebs/source.nix
+++ b/krebs/source.nix
@@ -4,6 +4,11 @@ host@{ name, secure ? false, override ? {} }: let
               then "buildbot"
               else "krebs";
   _file = <stockholm> + "/krebs/1systems/${name}/source.nix";
+  pkgs = import <nixpkgs> {
+    overlays = map import [
+      <stockholm/krebs/5pkgs>
+    ];
+  };
 in
   evalSource (toString _file) [
     {
@@ -16,9 +21,10 @@ in
         };
       };
       stockholm.file = toString <stockholm>;
+      stockholm-version.pipe = "${pkgs.stockholm}/bin/get-version";
       nixpkgs.git = {
         url = https://github.com/NixOS/nixpkgs;
-        ref = "d09e425aea3e09b6cec5c7b05cc0603f6853748b"; # nixos-17.09 @ 2018-02-22
+        ref = "c5bc83b503dfb29eb27c1deb0268f15c1858e7ce"; # nixos-17.09 @ 2018-02-27
       };
     }
     override
diff --git a/lass/1systems/mors/config.nix b/lass/1systems/mors/config.nix
index 6ca980155..cbb71ab24 100644
--- a/lass/1systems/mors/config.nix
+++ b/lass/1systems/mors/config.nix
@@ -182,7 +182,7 @@ with import <stockholm/lib>;
         echo 'secrets are crypted' >&2
         exit 23
       else
-        exec nix-shell -I stockholm="$PWD" --run 'deploy --diff --system="$SYSTEM"'
+        exec nix-shell -I stockholm="$PWD" --run 'deploy --system="$SYSTEM"'
       fi
     '';
     predeploy = pkgs.writeDash "predeploy" ''
diff --git a/lass/2configs/baseX.nix b/lass/2configs/baseX.nix
index 2b7a5c924..ed179ded6 100644
--- a/lass/2configs/baseX.nix
+++ b/lass/2configs/baseX.nix
@@ -2,6 +2,7 @@
 with import <stockholm/lib>;
 let
   user = config.krebs.build.user;
+  xmonad-lass = pkgs.callPackage <stockholm/lass/5pkgs/custom/xmonad-lass> { inherit config; };
 in {
   imports = [
     ./mpv.nix
@@ -84,7 +85,6 @@ in {
     powertop
     push
     rxvt_unicode_with-plugins
-    screengrab
     slock
     sxiv
     timewarrior
@@ -99,6 +99,7 @@ in {
     zathura
 
     cabal2nix
+    xephyrify
   ];
 
   fonts.fonts = with pkgs; [
@@ -129,7 +130,6 @@ in {
   };
 
   systemd.user.services.xmonad = {
-    #wantedBy = [ "graphical-session.target" ];
     environment = {
       DISPLAY = ":${toString config.services.xserver.display}";
       RXVT_SOCKET = "%t/urxvtd-socket";
@@ -137,8 +137,8 @@ in {
     };
     serviceConfig = {
       SyslogIdentifier = "xmonad";
-      ExecStart = "${pkgs.xmonad-lass}/bin/xmonad";
-      ExecStop = "${pkgs.xmonad-lass}/bin/xmonad --shutdown";
+      ExecStart = "${xmonad-lass}/bin/xmonad";
+      ExecStop = "${xmonad-lass}/bin/xmonad --shutdown";
     };
     restartIfChanged = false;
   };
diff --git a/lass/2configs/exim-smarthost.nix b/lass/2configs/exim-smarthost.nix
index 4335c7cab..ae652722a 100644
--- a/lass/2configs/exim-smarthost.nix
+++ b/lass/2configs/exim-smarthost.nix
@@ -11,7 +11,6 @@ with import <stockholm/lib>;
     primary_hostname = "lassul.us";
     sender_domains = [
       "lassul.us"
-      "aidsballs.de"
     ];
     relay_from_hosts = map (host: host.nets.retiolum.ip6.addr) [
       config.krebs.hosts.mors
@@ -70,6 +69,15 @@ with import <stockholm/lib>;
       { from = "aws@lassul.us"; to = lass.mail; }
       { from = "reddit@lassul.us"; to = lass.mail; }
       { from = "banggood@lassul.us"; to = lass.mail; }
+      { from = "immoscout@lassul.us"; to = lass.mail; }
+      { from = "gmail@lassul.us"; to = lass.mail; }
+      { from = "amazon@lassul.us"; to = lass.mail; }
+      { from = "humblebundle@lassul.us"; to = lass.mail; }
+      { from = "meetup@lassul.us"; to = lass.mail; }
+      { from = "gebfrei@lassul.us"; to = lass.mail; }
+      { from = "github@lassul.us"; to = lass.mail; }
+      { from = "ovh@lassul.us"; to = lass.mail; }
+      { from = "hetzner@lassul.us"; to = lass.mail; }
     ];
     system-aliases = [
       { from = "mailer-daemon"; to = "postmaster"; }
diff --git a/lass/2configs/mail.nix b/lass/2configs/mail.nix
index e83201cd8..03d39ef75 100644
--- a/lass/2configs/mail.nix
+++ b/lass/2configs/mail.nix
@@ -21,13 +21,46 @@ let
   '';
 
   mailboxes = {
-    wireguard = [ "to:wireguard@lists.zx2c4" ];
     c-base = [ "to:c-base.org" ];
-    security = [ "to:seclists.org" "to:security" "to:bugtraq" ];
+    coins = [
+      "to:btce@lassul.us"
+      "to:coinbase@lassul.us"
+      "to:polo@lassul.us"
+      "to:bitwala@lassul.us"
+      "to:payeer@lassul.us"
+      "to:gatehub@lassul.us"
+      "to:bitfinex@lassul.us"
+      "to:binance@lassul.us"
+      "to:bitcoin.de@lassul.us"
+      "to:robinhood@lassul.us"
+    ];
+    dezentrale = [ "to:dezentrale.space" ];
+    dhl = [ "to:dhl@lassul.us" ];
+    github = [ "to:github@lassul.us" ];
+    gmail = [ "to:gmail@lassul.us" "to:lassulus@gmail.com" "lassulus@googlemail.com" ];
+    kaosstuff = [ "to:gearbest@lassul.us" "to:banggood@lassul.us" "to:tomtop@lassul.us" ];
     nix-devel = [ "to:nix-devel@googlegroups.com" ];
+    patreon = [ "to:patreon@lassul.us" ];
+    paypal = [ "to:paypal@lassul.us" ];
+    ptl = [ "to:ptl@posttenebraslab.ch" ];
+    retiolum = [ "to:lass@mors.r" ];
+    security = [ "to:seclists.org" "to:bugtraq" "to:securityfocus@lassul.us" ];
     shack = [ "to:shackspace.de" ];
+    steam = [ "to:steam@lassul.us" ];
+    tinc = [ "to:tinc@tinc-vpn.org" "to:tinc-devel@tinc-vpn.org" ];
+    wireguard = [ "to:wireguard@lists.zx2c4" ];
+    zzz = [ "to:pizza@lassul.us" "to:spam@krebsco.de" ];
   };
 
+  tag-new-mails = pkgs.writeDashBin "nm-tag-init" ''
+    ${pkgs.notmuch}/bin/notmuch new
+    ${concatMapStringsSep "\n" (i: ''${pkgs.notmuch}/bin/notmuch tag -inbox +${i.name} -- tag:inbox ${concatMapStringsSep " or " (f: "${f}") i.value}'') (mapAttrsToList nameValuePair mailboxes)}
+  '';
+
+  tag-old-mails = pkgs.writeDashBin "nm-tag-old" ''
+    ${concatMapStringsSep "\n" (i: ''${pkgs.notmuch}/bin/notmuch tag -inbox -archive +${i.name} -- ${concatMapStringsSep " or " (f: "${f}") i.value}'') (mapAttrsToList nameValuePair mailboxes)}
+  '';
+
   muttrc = pkgs.writeText "muttrc" ''
     # gpg
     source ${pkgs.neomutt}/share/doc/mutt/samples/gpg.rc
@@ -80,10 +113,9 @@ let
       # V
     ''} %r |"
 
-    virtual-mailboxes "INBOX" "notmuch://?query=tag:inbox ${concatMapStringsSep " " (f: "and NOT ${f}") (flatten (attrValues mailboxes))}"
+    virtual-mailboxes "INBOX" "notmuch://?query=tag:inbox"
     virtual-mailboxes "Unread" "notmuch://?query=tag:unread"
-    ${concatMapStringsSep "\n" (i: ''${"  "}virtual-mailboxes "${i.name}" "notmuch://?query=${concatMapStringsSep " or " (f: "${f}") i.value}"'') (mapAttrsToList nameValuePair mailboxes)}
-    virtual-mailboxes "BOX" "notmuch://?query=${concatMapStringsSep " and " (f: "NOT ${f}") (flatten (attrValues mailboxes))}"
+    ${concatMapStringsSep "\n" (i: ''${"  "}virtual-mailboxes "${i.name}" "notmuch://?query=tag:${i.name}"'') (mapAttrsToList nameValuePair mailboxes)}
     virtual-mailboxes "TODO" "notmuch://?query=tag:TODO"
     virtual-mailboxes "Starred" "notmuch://?query=tag:*"
     virtual-mailboxes "Archive" "notmuch://?query=tag:archive"
@@ -163,5 +195,7 @@ in {
     mutt
     pkgs.much
     pkgs.notmuch
+    tag-new-mails
+    tag-old-mails
   ];
 }
diff --git a/lass/5pkgs/xmonad-lass.nix b/lass/5pkgs/custom/xmonad-lass/default.nix
index 59c95cff7..e658897da 100644
--- a/lass/5pkgs/xmonad-lass.nix
+++ b/lass/5pkgs/custom/xmonad-lass/default.nix
@@ -143,12 +143,21 @@ myKeyMap =
 
     , ("M4-d", floatNext True >> spawn "${pkgs.copyq}/bin/copyq show")
 
+    , ("M4-<F4>", spawn "${pkgs.writeDash "nm-dmenu" ''
+      export PATH=$PATH:${pkgs.dmenu}/bin:${pkgs.networkmanagerapplet}/bin
+      exec ${pkgs.networkmanager_dmenu}/bin/networkmanager_dmenu "$@"
+    ''}")
+
     , ("M4-<F5>", spawn "${pkgs.xorg.xbacklight}/bin/xbacklight -set 1")
     , ("M4-<F6>", spawn "${pkgs.xorg.xbacklight}/bin/xbacklight -set 10")
     , ("M4-<F7>", spawn "${pkgs.xorg.xbacklight}/bin/xbacklight -set 33")
     , ("M4-<F8>", spawn "${pkgs.xorg.xbacklight}/bin/xbacklight -set 100")
 
     , ("<Pause>", spawn "${pkgs.xcalib}/bin/xcalib -invert -alter")
+
+    --, ("M4-w", screenWorkspace 0 >>= (windows . W.greedyView))
+    --, ("M4-e", screenWorkspace 1 >>= (windows . W.greedyView))
+    --, ("M4-r", screenWorkspace 2 >>= (windows . W.greedyView))
     ]
 
 forkFile :: FilePath -> [String] -> Maybe [(String, String)] -> X ()
diff --git a/lass/5pkgs/default.nix b/lass/5pkgs/default.nix
index a158cd3c6..28482eb91 100644
--- a/lass/5pkgs/default.nix
+++ b/lass/5pkgs/default.nix
@@ -1,40 +1,39 @@
-{ config, pkgs, ... }@args:
+with import <stockholm/lib>;
+self: super: let
 
-{
-  nixpkgs.config.packageOverrides = rec {
-    acronym = pkgs.callPackage ./acronym/default.nix {};
-    dpass = pkgs.callPackage ./dpass {};
-    firefoxPlugins = {
-      noscript = pkgs.callPackage ./firefoxPlugins/noscript.nix {};
-      ublock = pkgs.callPackage ./firefoxPlugins/ublock.nix {};
-      vimperator = pkgs.callPackage ./firefoxPlugins/vimperator.nix {};
-    };
-    init = pkgs.callPackage ./init/default.nix args;
-    logify = pkgs.callPackage ./logify/default.nix {};
-    mk_sql_pair = pkgs.callPackage ./mk_sql_pair/default.nix {};
-    mpv-poll = pkgs.callPackage ./mpv-poll/default.nix {};
-    pop = pkgs.callPackage ./pop/default.nix {};
-    q = pkgs.callPackage ./q {};
-    rs = pkgs.callPackage ./rs/default.nix {};
-    urban = pkgs.callPackage ./urban/default.nix {};
-    xml2json = pkgs.callPackage ./xml2json/default.nix {};
-    xmonad-lass = import ./xmonad-lass.nix { inherit config pkgs; };
-    yt-next = pkgs.callPackage ./yt-next/default.nix {};
+  # This callPackage will try to detect obsolete overrides.
+  callPackage = path: args: let
+    override =  super.callPackage path args;
+    upstream = optionalAttrs (override ? "name")
+      (super.${(parseDrvName override.name).name} or {});
+  in if upstream ? "name" &&
+        override ? "name" &&
+        compareVersions upstream.name override.name != -1
+    then
+      trace
+        "Upstream `${upstream.name}' gets overridden by `${override.name}'."
+        override
+    else override;
 
-    bank = pkgs.writeDashBin "bank" ''
+   subdirsOf = path:
+     mapAttrs (name: _: path + "/${name}")
+              (filterAttrs (_: eq "directory") (readDir path));
+
+in {
+    bank = self.writeDashBin "bank" ''
       tmp=$(mktemp)
-      ${pkgs.pass}/bin/pass show hledger > $tmp
-      ${pkgs.hledger}/bin/hledger --file=$tmp "$@"
-      ${pkgs.pass}/bin/pass show hledger | if ${pkgs.diffutils}/bin/diff $tmp -; then
+      ${self.pass}/bin/pass show hledger > $tmp
+      ${self.hledger}/bin/hledger --file=$tmp "$@"
+      ${self.pass}/bin/pass show hledger | if ${self.diffutils}/bin/diff $tmp -; then
         exit 0
       else
-        ${pkgs.coreutils}/bin/cat $tmp | ${pkgs.pass}/bin/pass insert -m hledger
+        ${self.coreutils}/bin/cat $tmp | ${self.pass}/bin/pass insert -m hledger
       fi
-      ${pkgs.coreutils}/bin/rm $tmp
-    '';
-    screengrab = pkgs.writeDashBin "screengrab" ''
-      resolution="$(${pkgs.xorg.xrandr}/bin/xrandr | ${pkgs.gnugrep}/bin/grep '*' | ${pkgs.gawk}/bin/awk '{print $1}')"
-      ${pkgs.ffmpeg}/bin/ffmpeg -f x11grab -r 25 -i :${toString config.services.xserver.display} -s $resolution -c:v huffyuv $1
+      ${self.coreutils}/bin/rm $tmp
     '';
-  };
+    rtl8814au = callPackage ./custom/rtl8814au { kernel = self.linux; };
 }
+
+// mapAttrs (_: flip callPackage {})
+            (filterAttrs (_: dir: pathExists (dir + "/default.nix"))
+                         (subdirsOf ./.))
diff --git a/lass/5pkgs/xephyrify/default.nix b/lass/5pkgs/xephyrify/default.nix
new file mode 100644
index 000000000..8b18ea949
--- /dev/null
+++ b/lass/5pkgs/xephyrify/default.nix
@@ -0,0 +1,42 @@
+{ writeDashBin, writeHaskell, coreutils, xorg, virtualgl, ... }:
+
+let
+
+  minimalXmonad = writeHaskell "minimalXmonad" {
+    executables.xmonad = {
+      extra-depends = [
+        "containers"
+        "xmonad"
+      ];
+      text = /* haskell */ ''
+        module Main where
+        import XMonad
+        import qualified Data.Map as Map
+
+        main :: IO ()
+        main = do
+          xmonad def
+            { workspaces = [ "1" ]
+            , layoutHook = myLayoutHook
+            , keys = myKeys
+            , normalBorderColor  = "#000000"
+            , focusedBorderColor = "#000000"
+            }
+
+        myLayoutHook = Full
+        myKeys _ = Map.fromList []
+      '';
+    };
+  };
+
+in writeDashBin "xephyrify" ''
+  NDISPLAY=:$(${coreutils}/bin/shuf -i 100-65536 -n 1)
+  echo "using DISPLAY $NDISPLAY"
+  ${xorg.xorgserver}/bin/Xephyr -br -ac -reset -terminate -resizeable $NDISPLAY &
+  XEPHYR_PID=$!
+  DISPLAY=$NDISPLAY ${minimalXmonad}/bin/xmonad &
+  XMONAD_PID=$!
+  DISPLAY=$NDISPLAY ${virtualgl}/bin/vglrun "$@"
+  kill $XMONAD_PID
+  kill $XEPHYR_PID
+''
diff --git a/lass/default.nix b/lass/default.nix
index b1c7c1be8..d077cc09f 100644
--- a/lass/default.nix
+++ b/lass/default.nix
@@ -1,9 +1,9 @@
-_:
+{ pkgs, ... }:
 {
   imports = [
     ../krebs
     ./2configs
     ./3modules
-    ./5pkgs
   ];
+  nixpkgs.config.packageOverrides = import ./5pkgs pkgs;
 }
diff --git a/lass/source.nix b/lass/source.nix
index e3332c5de..1d840f38f 100644
--- a/lass/source.nix
+++ b/lass/source.nix
@@ -4,6 +4,11 @@ host@{ name, secure ? false, override ? {} }: let
               then "buildbot"
               else "lass";
   _file = <stockholm> + "/lass/1systems/${name}/source.nix";
+  pkgs = import <nixpkgs> {
+    overlays = map import [
+      <stockholm/krebs/5pkgs>
+    ];
+  };
 in
   evalSource (toString _file) [
     {
@@ -17,6 +22,7 @@ in
         };
       };
       stockholm.file = toString <stockholm>;
+      stockholm-version.pipe = "${pkgs.stockholm}/bin/get-version";
     }
     override
   ]
diff --git a/lib/types.nix b/lib/types.nix
index b85794925..1cf2d96c9 100644
--- a/lib/types.nix
+++ b/lib/types.nix
@@ -2,7 +2,7 @@
 
 let
   inherit (lib)
-    all any concatMapStringsSep concatStringsSep const filter flip
+    all any attrNames concatMapStringsSep concatStringsSep const filter flip
     genid hasSuffix head isInt isString length mergeOneOption mkOption
     mkOptionType optional optionalAttrs optionals range splitString
     stringLength substring test testString typeOf;
@@ -231,90 +231,93 @@ rec {
   source = submodule ({ config, ... }: {
     options = {
       type = let
-        types = [
-          "file"
-          "git"
-          "pass"
-          "symlink"
-        ];
+        known-types = attrNames source-types;
+        type-candidates = filter (k: config.${k} != null) known-types;
       in mkOption {
-        type = enum types;
-        default = let
-          cands = filter (k: config.${k} != null) types;
-        in
-          if length cands == 1
-            then head cands
-            else throw "cannot determine type";
-      };
-      file = let
-        file-path = (file-source.getSubOptions "FIXME").path.type;
-      in mkOption {
-        type = nullOr (either file-source file-path);
-        default = null;
+        default = if length type-candidates == 1
+                    then head type-candidates
+                    else throw "cannot determine type";
+        type = enum known-types;
+      };
+      file = mkOption {
         apply = x:
-          if file-path.check x
+          if absolute-pathname.check x
             then { path = x; }
             else x;
+        default = null;
+        type = nullOr (either absolute-pathname source-types.file);
       };
       git = mkOption {
-        type = nullOr git-source;
         default = null;
+        type = nullOr source-types.git;
       };
       pass = mkOption {
-        type = nullOr pass-source;
         default = null;
+        type = nullOr source-types.pass;
       };
-      symlink = let
-        symlink-target = (symlink-source.getSubOptions "FIXME").target.type;
-      in mkOption {
-        type = nullOr (either symlink-source symlink-target);
+      pipe = mkOption {
+        apply = x:
+          if absolute-pathname.check x
+            then { command = x; }
+            else x;
+        default = null;
+        type = nullOr (either absolute-pathname source-types.pipe);
+      };
+      symlink = mkOption {
+        type = nullOr (either pathname source-types.symlink);
         default = null;
         apply = x:
-          if symlink-target.check x
+          if pathname.check x
             then { target = x; }
             else x;
       };
     };
   });
 
-  file-source = submodule {
-    options = {
-      path = mkOption {
-        type = absolute-pathname;
+  source-types = {
+    file = submodule {
+      options = {
+        path = mkOption {
+          type = absolute-pathname;
+        };
       };
     };
-  };
-
-  git-source = submodule {
-    options = {
-      ref = mkOption {
-        type = str; # TODO types.git.ref
-      };
-      url = mkOption {
-        type = str; # TODO types.git.url
+    git = submodule {
+      options = {
+        ref = mkOption {
+          type = str; # TODO types.git.ref
+        };
+        url = mkOption {
+          type = str; # TODO types.git.url
+        };
       };
     };
-  };
-
-  pass-source = submodule {
-    options = {
-      dir = mkOption {
-        type = absolute-pathname;
+    pass = submodule {
+      options = {
+        dir = mkOption {
+          type = absolute-pathname;
+        };
+        name = mkOption {
+          type = pathname; # TODO relative-pathname
+        };
       };
-      name = mkOption {
-        type = pathname; # TODO relative-pathname
+    };
+    pipe = submodule {
+      options = {
+        command = mkOption {
+          type = absolute-pathname;
+        };
       };
     };
-  };
-
-  symlink-source = submodule {
-    options = {
-      target = mkOption {
-        type = pathname; # TODO relative-pathname
+    symlink = submodule {
+      options = {
+        target = mkOption {
+          type = pathname; # TODO relative-pathname
+        };
       };