diff --git a/artiq/pkgs/python-deps.nix b/artiq/pkgs/python-deps.nix
index 945b9d6..8e790eb 100644
--- a/artiq/pkgs/python-deps.nix
+++ b/artiq/pkgs/python-deps.nix
@@ -104,12 +104,13 @@ rec {
   migen = python3Packages.buildPythonPackage rec {
     name = "migen";
 
-    src = fetchFromGitHub {
-      owner = "m-labs";
-      repo = "migen";
-      rev = "caab41469f5a0cb4014bc00a03898a0b76b00dd1";
-      sha256 = "06zbbbjzlbyq2nlp13hyk8diw06zrffc37n4b6cxzk1i2aq8g83m";
-    };
+    #src = fetchFromGitHub {
+    #  owner = "m-labs";
+    #  repo = "migen";
+    #  rev = "caab41469f5a0cb4014bc00a03898a0b76b00dd1";
+    #  sha256 = "06zbbbjzlbyq2nlp13hyk8diw06zrffc37n4b6cxzk1i2aq8g83m";
+    #};
+    src = /home/sb/migen;
 
     propagatedBuildInputs = with python3Packages; [ colorama sphinx sphinx_rtd_theme ];
 
diff --git a/hydra/artiq.nix b/hydra/artiq.nix
index 959ed7d..e8f686a 100644
--- a/hydra/artiq.nix
+++ b/hydra/artiq.nix
@@ -38,6 +38,23 @@
                 "sinaraSystemsSrc": { "type": "git", "value": "https://git.m-labs.hk/M-Labs/sinara-systems.git master 1", "emailresponsible": false },
                 "m-labs": { "type": "sysbuild", "value": "artiq:main:generated-nix", "emailresponsible": false }
             }
+        },
+        "urukul": {
+            "enabled": 1,
+            "hidden": false,
+            "description": "Urukul CPLD gateware",
+            "nixexprinput": "nixScripts",
+            "nixexprpath": "urukul.nix",
+            "checkinterval": 172800,
+            "schedulingshares": 1,
+            "enableemail": false,
+            "emailoverride": "",
+            "keepnr": 10,
+            "inputs": {
+                "nixpkgs": { "type": "git", "value": "git://github.com/NixOS/nixpkgs-channels nixos-19.03", "emailresponsible": false },
+                "nixScripts": { "type": "git", "value": "https://git.m-labs.hk/M-Labs/nix-scripts.git", "emailresponsible": false },
+                "urukulSrc": { "type": "git", "value": "git://github.com/quartiq/urukul", "emailresponsible": false }
+            }
         }
     }
     EOF
diff --git a/urukul.nix b/urukul.nix
new file mode 100644
index 0000000..6e49e5b
--- /dev/null
+++ b/urukul.nix
@@ -0,0 +1,6 @@
+{ pkgs ? import <nixpkgs> {} }:
+
+let
+  jobs = import ./urukul/default.nix { inherit pkgs; };
+in
+  builtins.mapAttrs (key: value: pkgs.lib.hydraJob value) jobs
diff --git a/urukul/default.nix b/urukul/default.nix
new file mode 100644
index 0000000..db3726a
--- /dev/null
+++ b/urukul/default.nix
@@ -0,0 +1,20 @@
+{ pkgs ? import <nixpkgs> {} }:
+let
+  migen = (pkgs.callPackage ../artiq/pkgs/python-deps.nix {}).migen;
+  ise = import ./ise.nix { inherit pkgs; };
+in
+  {
+    urukul-cpld = pkgs.stdenv.mkDerivation {
+      name = "urukul-cpld";
+      src = <urukulSrc>;
+      buildInputs = [(pkgs.python3.withPackages(ps: [migen]))] ++ (builtins.attrValues ise);
+      phases = ["buildPhase" "installPhase"];
+      buildPhase = "python $src/urukul_impl.py";
+      installPhase = 
+        ''
+        mkdir -p $out $out/nix-support
+        cp build/urukul.jed $out
+        echo file binary-dist $out/urukul.jed >> $out/nix-support/hydra-build-products
+        '';
+    };
+  }
diff --git a/urukul/ise.nix b/urukul/ise.nix
new file mode 100644
index 0000000..7633f3a
--- /dev/null
+++ b/urukul/ise.nix
@@ -0,0 +1,31 @@
+# Install ISE in /opt and add to /etc/nixos/configuration.nix:
+#  nix.sandboxPaths = ["/opt"];
+
+{ pkgs, isePath ? "/opt/Xilinx/14.7/ISE_DS" }:
+
+let
+  makeXilinxEnv = name: pkgs.buildFHSUserEnv {
+    inherit name;
+    targetPkgs = pkgs: (
+      with pkgs; [
+        ncurses5
+        zlib
+        libuuid
+        xorg.libSM
+        xorg.libICE
+        xorg.libXrender
+        xorg.libX11
+        xorg.libXext
+        xorg.libXtst
+        xorg.libXi
+      ]
+    );
+    profile = 
+      ''
+      source ${isePath}/common/.settings64.sh ${isePath}/common
+      source ${isePath}/ISE/.settings64.sh ${isePath}/ISE
+      '';
+    runScript = name;
+  };
+in
+  pkgs.lib.attrsets.genAttrs ["xst" "ngdbuild" "cpldfit" "taengine" "hprep6"] makeXilinxEnv