diff --git a/nixos/modules/services/misc/octoprint.nix b/nixos/modules/services/misc/octoprint.nix
index c2b3f63be7d..8faad46a49f 100644
--- a/nixos/modules/services/misc/octoprint.nix
+++ b/nixos/modules/services/misc/octoprint.nix
@@ -7,7 +7,7 @@ let
   cfg = config.services.octoprint;
 
   baseConfig = {
-    plugins.cura.cura_engine = "${pkgs.curaengine}/bin/CuraEngine";
+    plugins.cura.cura_engine = "${pkgs.curaengine_stable}/bin/CuraEngine";
     server.host = cfg.host;
     server.port = cfg.port;
     webcam.ffmpeg = "${pkgs.ffmpeg.bin}/bin/ffmpeg";
diff --git a/pkgs/applications/misc/cura/default.nix b/pkgs/applications/misc/cura/default.nix
index a53b001b0e9..ff18796e39d 100644
--- a/pkgs/applications/misc/cura/default.nix
+++ b/pkgs/applications/misc/cura/default.nix
@@ -1,73 +1,38 @@
-{ stdenv, python27Packages, curaengine, makeDesktopItem, fetchurl }:
-let
-  py = python27Packages;
-  version = "15.04";
-in
+{ stdenv, lib, fetchFromGitHub, cmake, python3, qtbase, makeQtWrapper, curaengine }:
+
 stdenv.mkDerivation rec {
   name = "cura-${version}";
+  version = "2.4.0";
 
-  src = fetchurl {
-    url = "https://github.com/daid/Cura/archive/${version}.tar.gz";
-    sha256 = "0xbjvzhp8wzq9lnpmcg1fjf7j5h39bj5463sd5c8jzdjl96izizl";
+  src = fetchFromGitHub {
+    owner = "Ultimaker";
+    repo = "Cura";
+    rev = version;
+    sha256 = "04iglmjg9rzmlfrll6g7bcckkla327938xh8qmbdfrh215aivdlp";
   };
 
-  desktopItem = makeDesktopItem {
-    name = "Cura";
-    exec = "cura";
-    icon = "cura";
-    comment = "Cura";
-    desktopName = "Cura";
-    genericName = "3D printing host software";
-    categories = "GNOME;GTK;Utility;";
-  };
+  buildInputs = [ qtbase ];
+  propagatedBuildInputs = with python3.pkgs; [ uranium zeroconf pyserial ];
+  nativeBuildInputs = [ cmake python3.pkgs.wrapPython makeQtWrapper ];
 
-  python_deps = with py; [ pyopengl pyserial numpy wxPython30 power setuptools ];
+  cmakeFlags = [ "-DCMAKE_MODULE_PATH=${python3.pkgs.uranium}/share/cmake-${cmake.majorVersion}/Modules" ];
 
-  pythonPath = python_deps;
+  postPatch = ''
+    sed -i 's,/python''${PYTHON_VERSION_MAJOR}/dist-packages,/python''${PYTHON_VERSION_MAJOR}.''${PYTHON_VERSION_MINOR}/site-packages,g' CMakeLists.txt
+    sed -i 's, executable_name = .*, executable_name = "${curaengine}/bin/CuraEngine",' plugins/CuraEngineBackend/CuraEngineBackend.py
+  '';
 
-  propagatedBuildInputs = python_deps;
-
-  buildInputs = [ curaengine py.wrapPython ];
-
-  configurePhase = "";
-  buildPhase = "";
-  
-  patches = [ ./numpy-cast.patch ];
-
-  installPhase = ''
-    # Install Python code.
-    site_packages=$out/lib/python2.7/site-packages
-    mkdir -p $site_packages
-    cp -r Cura $site_packages/
-
-    # Install resources.
-    resources=$out/share/cura
-    mkdir -p $resources
-    cp -r resources/* $resources/
-    sed -i 's|os.path.join(os.path.dirname(__file__), "../../resources")|"'$resources'"|g' $site_packages/Cura/util/resources.py
-
-    # Install executable.
-    mkdir -p $out/bin
-    cp Cura/cura.py $out/bin/cura
-    chmod +x $out/bin/cura
-    sed -i 's|#!/usr/bin/python|#!/usr/bin/env python|' $out/bin/cura
+  postFixup = ''
     wrapPythonPrograms
-
-    # Make it find CuraEngine.
-    echo "def getEngineFilename(): return '${curaengine}/bin/CuraEngine'" >> $site_packages/Cura/util/sliceEngine.py
-
-    # Install desktop item.
-    mkdir -p "$out"/share/applications
-    cp "$desktopItem"/share/applications/* "$out"/share/applications/
-    mkdir -p "$out"/share/icons
-    ln -s "$resources/images/c.png" "$out"/share/icons/cura.png
+    mv $out/bin/cura $out/bin/.cura-noqtpath
+    makeQtWrapper $out/bin/.cura-noqtpath $out/bin/cura
   '';
 
   meta = with stdenv.lib; {
-    description = "3D printing host software";
-    homepage = https://github.com/daid/Cura;
+    description = "3D printer / slicing GUI built on top of the Uranium framework";
+    homepage = "https://github.com/Ultimaker/Cura";
     license = licenses.agpl3;
     platforms = platforms.linux;
-    maintainers = with stdenv.lib.maintainers; [ the-kenny ];
+    maintainers = with maintainers; [ abbradar ];
   };
 }
diff --git a/pkgs/applications/misc/cura/stable.nix b/pkgs/applications/misc/cura/stable.nix
new file mode 100644
index 00000000000..a53b001b0e9
--- /dev/null
+++ b/pkgs/applications/misc/cura/stable.nix
@@ -0,0 +1,73 @@
+{ stdenv, python27Packages, curaengine, makeDesktopItem, fetchurl }:
+let
+  py = python27Packages;
+  version = "15.04";
+in
+stdenv.mkDerivation rec {
+  name = "cura-${version}";
+
+  src = fetchurl {
+    url = "https://github.com/daid/Cura/archive/${version}.tar.gz";
+    sha256 = "0xbjvzhp8wzq9lnpmcg1fjf7j5h39bj5463sd5c8jzdjl96izizl";
+  };
+
+  desktopItem = makeDesktopItem {
+    name = "Cura";
+    exec = "cura";
+    icon = "cura";
+    comment = "Cura";
+    desktopName = "Cura";
+    genericName = "3D printing host software";
+    categories = "GNOME;GTK;Utility;";
+  };
+
+  python_deps = with py; [ pyopengl pyserial numpy wxPython30 power setuptools ];
+
+  pythonPath = python_deps;
+
+  propagatedBuildInputs = python_deps;
+
+  buildInputs = [ curaengine py.wrapPython ];
+
+  configurePhase = "";
+  buildPhase = "";
+  
+  patches = [ ./numpy-cast.patch ];
+
+  installPhase = ''
+    # Install Python code.
+    site_packages=$out/lib/python2.7/site-packages
+    mkdir -p $site_packages
+    cp -r Cura $site_packages/
+
+    # Install resources.
+    resources=$out/share/cura
+    mkdir -p $resources
+    cp -r resources/* $resources/
+    sed -i 's|os.path.join(os.path.dirname(__file__), "../../resources")|"'$resources'"|g' $site_packages/Cura/util/resources.py
+
+    # Install executable.
+    mkdir -p $out/bin
+    cp Cura/cura.py $out/bin/cura
+    chmod +x $out/bin/cura
+    sed -i 's|#!/usr/bin/python|#!/usr/bin/env python|' $out/bin/cura
+    wrapPythonPrograms
+
+    # Make it find CuraEngine.
+    echo "def getEngineFilename(): return '${curaengine}/bin/CuraEngine'" >> $site_packages/Cura/util/sliceEngine.py
+
+    # Install desktop item.
+    mkdir -p "$out"/share/applications
+    cp "$desktopItem"/share/applications/* "$out"/share/applications/
+    mkdir -p "$out"/share/icons
+    ln -s "$resources/images/c.png" "$out"/share/icons/cura.png
+  '';
+
+  meta = with stdenv.lib; {
+    description = "3D printing host software";
+    homepage = https://github.com/daid/Cura;
+    license = licenses.agpl3;
+    platforms = platforms.linux;
+    maintainers = with stdenv.lib.maintainers; [ the-kenny ];
+  };
+}
diff --git a/pkgs/applications/misc/curaengine/default.nix b/pkgs/applications/misc/curaengine/default.nix
index ce743a00879..08df0cc3e90 100644
--- a/pkgs/applications/misc/curaengine/default.nix
+++ b/pkgs/applications/misc/curaengine/default.nix
@@ -1,29 +1,26 @@
-{ stdenv, fetchurl }:
-let
-  version = "15.04.6";
-in
-stdenv.mkDerivation {
-  name = "curaengine-${version}";
+{ stdenv, fetchFromGitHub, cmake, libarcus }:
 
-  src = fetchurl {
-    url = "https://github.com/Ultimaker/CuraEngine/archive/${version}.tar.gz";
-    sha256 = "1cd4dikzvqyj5g80rqwymvh4nwm76vsf78clb37kj6q0fig3qbjg";
+stdenv.mkDerivation rec {
+  name = "curaengine-${version}";
+  version = "2.4.0";
+
+  src = fetchFromGitHub {
+    owner = "Ultimaker";
+    repo = "CuraEngine";
+    rev = version;
+    sha256 = "1n587cqm310kzb2zbc31199x7ybgxzjq91hslb1zcb8qg8qqmixm";
   };
 
-  postPatch = ''
-    sed -i 's,--static,,g' Makefile
-  '';
+  nativeBuildInputs = [ cmake ];
+  buildInputs = [ libarcus ];
 
-  installPhase = ''
-    mkdir -p $out/bin
-    cp build/CuraEngine $out/bin/
-  '';
+  enableParallelBuilding = true;
 
   meta = with stdenv.lib; {
-    description = "Engine for processing 3D models into 3D printing instructions";
-    homepage = https://github.com/Ultimaker/CuraEngine;
+    description = "A powerful, fast and robust engine for processing 3D models into 3D printing instruction";
+    homepage = "https://github.com/Ultimaker/CuraEngine";
     license = licenses.agpl3;
     platforms = platforms.linux;
-    maintainers = with stdenv.lib.maintainers; [ the-kenny ];
+    maintainers = with maintainers; [ abbradar ];
   };
 }
diff --git a/pkgs/applications/misc/curaengine/stable.nix b/pkgs/applications/misc/curaengine/stable.nix
new file mode 100644
index 00000000000..ce743a00879
--- /dev/null
+++ b/pkgs/applications/misc/curaengine/stable.nix
@@ -0,0 +1,29 @@
+{ stdenv, fetchurl }:
+let
+  version = "15.04.6";
+in
+stdenv.mkDerivation {
+  name = "curaengine-${version}";
+
+  src = fetchurl {
+    url = "https://github.com/Ultimaker/CuraEngine/archive/${version}.tar.gz";
+    sha256 = "1cd4dikzvqyj5g80rqwymvh4nwm76vsf78clb37kj6q0fig3qbjg";
+  };
+
+  postPatch = ''
+    sed -i 's,--static,,g' Makefile
+  '';
+
+  installPhase = ''
+    mkdir -p $out/bin
+    cp build/CuraEngine $out/bin/
+  '';
+
+  meta = with stdenv.lib; {
+    description = "Engine for processing 3D models into 3D printing instructions";
+    homepage = https://github.com/Ultimaker/CuraEngine;
+    license = licenses.agpl3;
+    platforms = platforms.linux;
+    maintainers = with stdenv.lib.maintainers; [ the-kenny ];
+  };
+}
diff --git a/pkgs/development/python-modules/libarcus/default.nix b/pkgs/development/python-modules/libarcus/default.nix
new file mode 100644
index 00000000000..cae6ac62e1e
--- /dev/null
+++ b/pkgs/development/python-modules/libarcus/default.nix
@@ -0,0 +1,33 @@
+{ stdenv, lib, fetchFromGitHub, python, cmake, sip, protobuf }:
+
+if lib.versionOlder python.version "3.4.0"
+then throw "libArcus not supported for interpreter ${python.executable}"
+else
+
+stdenv.mkDerivation rec {
+  name = "libarcus-${version}";
+  version = "2.4.0";
+  
+  src = fetchFromGitHub {
+    owner = "Ultimaker";
+    repo = "libArcus";
+    rev = version;
+    sha256 = "07lf5d42pnx0h9lgldplfdj142rbcsxx23njdblnq04di7a4937h";
+  };
+  
+  propagatedBuildInputs = [ sip protobuf ];
+  nativeBuildInputs = [ cmake ];
+
+  postPatch = ''
+    # To workaround buggy SIP detection which overrides PYTHONPATH
+    sed -i '/SET(ENV{PYTHONPATH}/d' cmake/FindSIP.cmake
+  '';
+
+  meta = with stdenv.lib; {
+    description = "Communication library between internal components for Ultimaker software";
+    homepage = "https://github.com/Ultimaker/libArcus";
+    license = licenses.agpl3;
+    platforms = platforms.linux;
+    maintainers = with maintainers; [ abbradar ];
+  };
+}
diff --git a/pkgs/development/python-modules/uranium/default.nix b/pkgs/development/python-modules/uranium/default.nix
new file mode 100644
index 00000000000..bce88635d3c
--- /dev/null
+++ b/pkgs/development/python-modules/uranium/default.nix
@@ -0,0 +1,37 @@
+{ stdenv, lib, fetchFromGitHub, python, cmake, pyqt5, numpy, scipy, libarcus }:
+
+if lib.versionOlder python.version "3.5.0"
+then throw "Uranium not supported for interpreter ${python.executable}"
+else
+
+stdenv.mkDerivation rec {
+  name = "uranium-${version}";
+  version = "2.4.0";
+  
+  src = fetchFromGitHub {
+    owner = "Ultimaker";
+    repo = "Uranium";
+    rev = version;
+    sha256 = "1jpl0ryk8xdppillk5wzr2415n50cpa09shn1xqj6y96fg22l2il";
+  };
+  
+  buildInputs = [ python ];
+  propagatedBuildInputs = [ pyqt5 numpy scipy libarcus ];
+  nativeBuildInputs = [ cmake ];
+
+  postPatch = ''
+    sed -i 's,/python''${PYTHON_VERSION_MAJOR}/dist-packages,/python''${PYTHON_VERSION_MAJOR}.''${PYTHON_VERSION_MINOR}/site-packages,g' CMakeLists.txt
+    sed -i \
+     -e "s,Resources.addSearchPath(os.path.join(os.path.abspath(os.path.dirname(__file__)).*,Resources.addSearchPath(\"$out/share/uranium/resources\")," \
+     -e "s,self._plugin_registry.addPluginLocation(os.path.join(os.path.abspath(os.path.dirname(__file__)).*,self._plugin_registry.addPluginLocation(\"$out/lib/uranium/plugins\")," \
+     UM/Application.py
+  '';
+
+  meta = with stdenv.lib; {
+    description = "A Python framework for building Desktop applications";
+    homepage = "https://github.com/Ultimaker/Uranium";
+    license = licenses.agpl3;
+    platforms = platforms.linux;
+    maintainers = with maintainers; [ abbradar ];
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 46d4d7f8bc9..170fa60c27b 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -15270,9 +15270,15 @@ with pkgs;
 
   slic3r = callPackage ../applications/misc/slic3r { };
 
-  curaengine = callPackage ../applications/misc/curaengine { };
+  curaengine_stable = callPackage ../applications/misc/curaengine/stable.nix { };
+  cura_stable = callPackage ../applications/misc/cura/stable.nix {
+    curaengine = curaengine_stable;
+  };
 
-  cura = callPackage ../applications/misc/cura { };
+  curaengine = callPackage ../applications/misc/curaengine {
+    inherit (python3.pkgs) libarcus;
+  };
+  cura = qt5.callPackage ../applications/misc/cura { };
 
   curaLulzbot = callPackage ../applications/misc/cura/lulzbot.nix { };
 
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index cb6fee5977d..d9ec862146c 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -10986,6 +10986,26 @@ in {
     };
   };
 
+  enum-compat = buildPythonPackage rec {
+    pname = "enum-compat";
+    version = "0.0.2";
+    name = "${pname}-${version}";
+
+    src = fetchPypi {
+      inherit pname version;
+      sha256 = "14j1i963jic2vncbf9k5nq1vvv8pw2zsg7yvwhm7d9c6h7qyz74k";
+    };
+
+    propagatedBuildInputs = with self; [ enum34 ];
+
+    meta = {
+      homepage = "https://github.com/jstasiak/enum-compat";
+      description = "enum/enum34 compatibility package";
+      license = licenses.mit;
+      maintainers = with maintainers; [ abbradar ];
+    };
+  };
+
   enum34 = if pythonAtLeast "3.4" then null else buildPythonPackage rec {
     pname = "enum34";
     version = "1.1.6";
@@ -28129,6 +28149,10 @@ EOF
     inherit (pkgs) libasyncns pkgconfig;
   };
 
+  libarcus = callPackage ../development/python-modules/libarcus {
+    protobuf = self.protobuf3_0;
+  };
+
   pybrowserid = buildPythonPackage rec {
     name = "PyBrowserID-${version}";
     version = "0.9.2";
@@ -31986,6 +32010,8 @@ EOF
     };
   };
 
+  uranium = callPackage ../development/python-modules/uranium { };
+
   urlscan = callPackage ../applications/misc/urlscan { };
 
   vine = buildPythonPackage rec {
@@ -32026,6 +32052,26 @@ EOF
   zeitgeist = if isPy3k then throw "zeitgeist not supported for interpreter ${python.executable}" else
     (pkgs.zeitgeist.override{python2Packages=self;}).py;
 
+  zeroconf = buildPythonPackage rec {
+    pname = "zeroconf";
+    version = "0.18.0";
+    name = "${pname}-${version}";
+
+    src = fetchPypi {
+      inherit pname version;
+      sha256 = "0s1840v2h4h19ad8lfadbm3dhzs8bw9c5c3slkxql1zsaiycvjy2";
+    };
+
+    propagatedBuildInputs = with self; [ netifaces six enum-compat ];
+
+    meta = {
+      description = "A pure python implementation of multicast DNS service discovery";
+      homepage = "https://github.com/jstasiak/python-zeroconf";
+      license = licenses.lgpl21;
+      maintainers = with maintainers; [ abbradar ];
+    };
+  };
+
   zipfile36 = buildPythonPackage rec {
     pname = "zipfile36";
     version = "0.1.3";