diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..0726648
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,8 @@
+.DS_Store
+.idea
+*.log
+tmp/
+
+
+source/
+result/
diff --git a/default.nix b/default.nix
new file mode 100644
index 0000000..b73e6ee
--- /dev/null
+++ b/default.nix
@@ -0,0 +1,21 @@
+{ pkgs ? import <nixpkgs> {},
+  kernel ? (import <nixpkgs> {}).linuxPackages_latest }:
+#pkgs.libsForQt5.callPackage ./qtpdwidgets.nix {}
+#pkgs.libsForQt5.callPackage ./testmanager.nix {}
+#pkgs.libsForQt5.callPackage ./dls.nix {}
+#pkgs.callPackage ./pdcom.nix {}
+#pkgs.callPackage ./etherlab.nix {}
+let
+  packages = rec {
+    ethercat = pkgs.callPackage ./ethercat.nix {
+      kernel = pkgs.linux_latest;
+    };
+    testmanager = pkgs.libsForQt5.callPackage ./testmanager.nix {};
+    dls = pkgs.libsForQt5.callPackage ./dls.nix {};
+    etherlab = pkgs.libsForQt5.callPackage ./etherlab.nix {};
+    qtpdwidgets = pkgs.libsForQt5.callPackage ./qtpdwidgets.nix {};
+    pdcom = pkgs.callPackage ./pdcom.nix {};
+    pdserv = pkgs.callPackage ./pdserv.nix {};
+  };
+in
+packages
diff --git a/dls.nix b/dls.nix
new file mode 100644
index 0000000..35296d8
--- /dev/null
+++ b/dls.nix
@@ -0,0 +1,66 @@
+{
+  pkgs,
+  lib,
+  qtbase,
+  qttools,
+  wrapQtAppsHook,
+  stdenv,
+  pdcom ? pkgs.callPackage ./pdcom.nix {},
+}:
+
+with pkgs;
+let
+  version="1.5.0";
+  #rev = "aa943dbb6919b83cf90028fda1acbecc554177c5"; #1.4.0
+  rev = "bc458cc89e667d8dd03c9fdaf9d87cac7754b6a5"; #1.5.0
+in
+stdenv.mkDerivation {
+  name = "dls";
+  inherit version;
+
+  src = fetchGit {
+    url = "https://gitlab.com/etherlab.org/dls.git";
+    ref = "refs/tags/${version}";
+    inherit rev;
+    #sha256 = "05w6k4925lwjlm0n3xp4k83ymcxrc6qzz825rv7yrh4pdgzdvwxi";
+  };
+  enableParallelBuilding = true;
+
+  #nativeBuildInputs = [ wrapQtAppsHook bash pkg-config autoreconfHook ];
+  nativeBuildInputs = [ wrapQtAppsHook bash pkg-config cmake ];
+  buildInputs = [ qtbase qttools libxml2 fftw pcre zlib protobuf uriparser hdf5-cpp fltk pdcom ];
+  #buildInputs = [ libxcrypt expat gnutls cyrus_sasl log4cplus db libyaml ];
+  #
+  cmakeFlags = [ "-DREVISION=${rev}" ];
+  #configureFlags = [
+  #  "--with-fltk-dir=${fltk}"
+  #  "--with-fftw3-dir=${fftw.dev}"
+  #  "--with-zlib-dir=${zlib.dev}"
+  #];
+
+  #makeFlags = [ "REVISION=${rev}" ];
+
+  #preAutoreconf = ''
+  #  bash bootstrap.sh
+  #'';
+  #preConfigure = ''
+  #  echo ${rev} > revision
+
+  ##  #bash bootstrap.sh
+  ##  set -e
+  ##  set -x
+
+  ##  touch ChangeLog
+  ##  mkdir -p autoconf
+  #'';
+
+  #preConfigure = ''
+  #  qmake
+  #  #PREFIX=$out qmake
+  #'';
+
+  meta = with lib; {
+    description = "Acquisition, compression, storage, visualization and export of long-time data via graphical user interfaces.";
+    platforms = platforms.linux;
+  };
+}
diff --git a/ethercat.nix b/ethercat.nix
new file mode 100644
index 0000000..0df96e7
--- /dev/null
+++ b/ethercat.nix
@@ -0,0 +1,105 @@
+{
+  pkgs,
+  lib,
+  stdenv,
+  # interface name (eg. "eth0") or MAC address (eg. "e9:22:a4:62:74:23"). ff:ff:ff:ff:ff:ff means first available NIC
+  master_device0 ? "ff:ff:ff:ff:ff:ff",
+  kernel
+}:
+
+# Based on: https://aur.archlinux.org/packages/etherlab-ethercat
+
+with pkgs;
+let
+  version="1.5";
+  device_modules="generic";
+in
+stdenv.mkDerivation {
+  name = "ethercat-master-module-${kernel.modDirVersion}";
+  inherit version;
+  inherit master_device0;
+
+  src = fetchGit {
+    url = "https://gitlab.com/etherlab.org/ethercat.git";
+    ref = "stable-${version}";
+    rev = "c8a512ac077f2ab51bb072bfbef1a687f9f1c090";
+    #ref = "refs/tags/1.9";
+    #sha256 = lib.fakeSha256;
+  };
+  enableParallelBuilding = true;
+
+  buildInputs = [ git pkg-config bash autoreconfHook kernel.moduleBuildDependencies kmod iproute2 ];
+
+  patches = [ ];
+
+  hardeningDisable = [ "pic" "format" ];
+
+  setSourceRoot = ''
+    export sourceRoot=$(pwd)/source
+  '';
+
+  postUnpack = ''
+    cd $sourceRoot
+    echo 'KERNEL=="EtherCAT[0-9]*", GROUP="ethercat", MODE="0660"' > 99-EtherCAT.rules
+  '';
+
+  preConfigure = ''
+    bash bootstrap
+  '';
+
+  configureFlags = [
+    "--prefix=${placeholder "out"}/"
+    "--sysconfdir=${placeholder "out"}/etc"
+    "--sbindir=${placeholder "out"}/bin"
+    "--libdir=${placeholder "out"}/lib"
+    "--enable-kernel"
+    "--enable-generic"
+    "--disable-8139too"
+    "--enable-tool"
+    "--enable-userlib"
+    "--with-linux-dir=${kernel.dev}/lib/modules/${kernel.modDirVersion}/build"
+  ];
+  #++ lib.optionals (!guiSupport) [ "--disable-gui" "--enable-systemd" ] # TODO add flags for nongeneric NICs like this
+
+  makeFlags = [ "all" "modules" ];
+
+  # Make systemd service unit
+  postBuild = ''
+    cd script
+    make all ethercat.service
+    cd ..
+  '';
+
+  checkPhase = ''
+    make check
+  '';
+
+  installFlags = [ "INSTALL_MOD_PATH=${placeholder "out"}" ];
+  installTargets = [ "install" "modules_install" ];
+
+  postInstall = ''
+    mkdir -p $out/lib/udev/rules.d/
+    cp 99-EtherCAT.rules $out/lib/udev/rules.d/
+
+    mkdir -p $out/lib/systemd/system
+    mkdir -p $out/etc/systemd/system
+    cp script/ethercat.service $out/etc/systemd/system/
+    substituteInPlace $out/etc/systemd/system/ethercat.service --replace '#Requires' 'Requires'
+    substituteInPlace $out/etc/systemd/system/ethercat.service --replace '#After' 'After'
+    cp $out/etc/systemd/system/ethercat.service $out/lib/systemd/system/ethercat.service
+
+    substituteInPlace $out/etc/ethercat.conf --replace 'MASTER0_DEVICE=""' 'MASTER0_DEVICE="${master_device0}"'
+    substituteInPlace $out/etc/ethercat.conf --replace 'DEVICE_MODULES=""' 'DEVICE_MODULES="${device_modules}"'
+
+    substituteInPlace $out/bin/ethercatctl --replace 'LSMOD=/sbin/lsmod' 'LSMOD=lsmod'
+    substituteInPlace $out/bin/ethercatctl --replace 'MODPROBE=/sbin/modprobe' 'MODPROBE=modprobe'
+    substituteInPlace $out/bin/ethercatctl --replace 'RMMOD=/sbin/rmmod' 'RMMOD=rmmod'
+    substituteInPlace $out/bin/ethercatctl --replace 'MODINFO=/sbin/modinfo' 'MODINFO=modinfo'
+    substituteInPlace $out/bin/ethercatctl --replace 'IP=/bin/ip' 'IP=ip'
+  '';
+
+  meta = with lib; {
+    description = "Kernel modules and tools for IgH EtherCAT(R) Master component";
+    platforms = platforms.linux;
+  };
+}
diff --git a/etherlab.nix b/etherlab.nix
new file mode 100644
index 0000000..94e1c17
--- /dev/null
+++ b/etherlab.nix
@@ -0,0 +1,31 @@
+{
+  pkgs,
+  lib,
+  stdenv,
+  pdserv ? pkgs.callPackage ./pdserv.nix {},
+}:
+
+with pkgs;
+let
+  version="2.3.4";
+  rev = "aa5d574b096db1ea91479e4fb3c1aa63abedf4d0";
+in
+stdenv.mkDerivation {
+  name = "etherlab";
+  inherit version;
+
+  src = fetchGit {
+    url = "https://gitlab.com/etherlab.org/etherlab.git";
+    ref = "refs/tags/${version}";
+    inherit rev;
+  };
+  enableParallelBuilding = true;
+
+  nativeBuildInputs = [ bash cmake pkg-config ];
+  buildInputs = [ pdserv ];
+
+  meta = with lib; {
+    description = "Generation of realtime applications via a C-Interface or via MATLAB/Simulink with Real-Time Workshop.";
+    platforms = platforms.linux;
+  };
+}
diff --git a/pdcom.nix b/pdcom.nix
new file mode 100644
index 0000000..1bef7da
--- /dev/null
+++ b/pdcom.nix
@@ -0,0 +1,77 @@
+{
+  pkgs,
+  lib,
+  stdenv
+}:
+
+with pkgs;
+let
+  version="stable-3.0";
+  #version="5.1.0";
+  #version="stable-5.0";
+  #version="master";
+in
+stdenv.mkDerivation {
+  name = "pdcom";
+  inherit version;
+
+  src = fetchGit {
+    url = "https://gitlab.com/etherlab.org/pdcom.git";
+    ref = "${version}";
+    rev = "66bb0428137c0d795bddd0312875df9388c7e9b6"; #stable-3.0
+    #rev = "b9e4ca1d61d34474b7d50f7806f26aaf4cfe5100"; #5.1.0
+    #rev = "0e96e5d4bc2ad038ef6583d771f60fb0c2c563b1"; #stable-5.0
+    #rev = "89a79c902b536f9913ef4a4a9a868f5c42105368"; #master
+    #ref = "refs/tags/${version}";
+    #rev = "b9e4ca1d61d34474b7d50f7806f26aaf4cfe5100";
+    #ref = "refs/tags/1.9";
+    #sha256 = lib.fakeSha256;
+  };
+  enableParallelBuilding = true;
+
+  nativeBuildInputs = [ bash autoreconfHook pkg-config ];
+  #buildInputs = [ glibc glibc.static expat gnutls cyrus_sasl ];
+  buildInputs = [ libxcrypt expat gnutls cyrus_sasl ];
+
+  #configurePhase = ''
+  #  ./configure
+  #'';
+
+  #patches = [ ];
+
+  #setSourceRoot = ''
+  #  export sourceRoot=$(pwd)/source
+  #'';
+
+  #postUnpack = ''
+  #  cd $sourceRoot
+  #'';
+
+  #preBuild = "set -x";
+
+  #preConfigure = ''
+  #  mkdir build
+  #  cd build
+  #'';
+
+  #cmakeFlags = [ "-DBUILD_TESTING=OFF" "-DCMAKE_BUILD_TYPE=Release" ];
+  #cmakeFlags = [ "-DCMAKE_POSITION_INDEPENDENT_CODE=ON" ];
+
+  #configurePhase = ''
+  #  cmake -DBUILD_TESTING=OFF -DCMAKE_BUILD_TYPE=Release ..
+  #'';
+
+  #makeFlags = [ "-DCMAKE_INSTALL_PREFIX=${placeholder "out"}" ];
+
+  #installTargets = [ "install" ];
+
+  #postInstall = ''
+  #  ln -s $out/include/pdcom5 $out/include/pdcom
+  #  ln -s $out/include/pdcom5.h $out/include/pdcom.h
+  #'';
+
+  meta = with lib; {
+    description = "Flexible C++ library for platform- and protocol-independent process data exchange.";
+    platforms = platforms.linux;
+  };
+}
diff --git a/pdserv.nix b/pdserv.nix
new file mode 100644
index 0000000..6eba80c
--- /dev/null
+++ b/pdserv.nix
@@ -0,0 +1,33 @@
+{
+  pkgs,
+  lib,
+  stdenv
+}:
+
+with pkgs;
+let
+  version="master";
+in
+stdenv.mkDerivation {
+  name = "pdserv";
+  inherit version;
+
+  src = fetchGit {
+    url = "https://gitlab.com/etherlab.org/pdserv.git";
+    ref = "${version}";
+    rev = "8642c3fe7456d85f5147fdee39fe9918945d175c"; #master
+  };
+  enableParallelBuilding = true;
+
+  #nativeBuildInputs = [ bash cmake autoreconfHook ];
+  nativeBuildInputs = [ bash cmake pkg-config ];
+  buildInputs = [ libxcrypt expat gnutls cyrus_sasl log4cplus db libyaml ];
+
+  #cmakeFlags = [ "-DENABLE_DOC=0" ];
+
+
+  meta = with lib; {
+    description = "Server library (C/C++) for process-data of user-space realtime applications.";
+    platforms = platforms.linux;
+  };
+}
diff --git a/qtpdcom.nix b/qtpdcom.nix
new file mode 100644
index 0000000..1c03b64
--- /dev/null
+++ b/qtpdcom.nix
@@ -0,0 +1,33 @@
+{
+  stdenv,
+  lib,
+  pkgs,
+  qtbase,
+  qttools,
+  wrapQtAppsHook,
+  pdcom ? pkgs.callPackage ./pdcom.nix {},
+}:
+
+with pkgs;
+let
+  version="main";
+in
+stdenv.mkDerivation {
+  name = "qtpdcom";
+  inherit version;
+
+  src = fetchGit {
+    url = "https://gitlab.com/etherlab.org/qtpdcom.git";
+    ref = "${version}";
+    rev = "da7b15d764220371050674ce4618562e0d87beaf"; #main
+  };
+  enableParallelBuilding = true;
+
+  buildInputs = [ qtbase qttools pdcom ];
+  nativeBuildInputs = [ cmake wrapQtAppsHook ];
+
+  meta = with lib; {
+    description = "";
+    platforms = platforms.linux;
+  };
+}
diff --git a/qtpdwidgets.nix b/qtpdwidgets.nix
new file mode 100644
index 0000000..e764f1a
--- /dev/null
+++ b/qtpdwidgets.nix
@@ -0,0 +1,49 @@
+{
+  stdenv,
+  lib,
+  pkgs,
+  qtbase,
+  qttools,
+  wrapQtAppsHook,
+  pdcom ? pkgs.callPackage ./pdcom.nix {},
+  #qtpdcom ? pkgs.libsForQt5.callPackage ./qtpdcom.nix {},
+}:
+
+with pkgs;
+let
+  version="stable-1.3";
+in
+stdenv.mkDerivation {
+  name = "qtpdwidgets";
+  inherit version;
+
+  src = fetchGit {
+    url = "https://gitlab.com/etherlab.org/qtpdwidgets.git";
+    ref = "${version}";
+    rev = "1f963f3acb6b250eb7447829d5c40bde1e6dd8d1"; #stable-1.3
+  };
+  enableParallelBuilding = true;
+
+  buildInputs = [ qtbase qttools pdcom ];
+  nativeBuildInputs = [ wrapQtAppsHook ];
+
+  preConfigure = ''
+    #qmake
+    PREFIX=$out qmake
+    substituteInPlace Makefile.Release --replace 'DESTDIR       =' 'DESTDIR       =${placeholder "out"}'
+
+  '';
+
+  installFlags = [ "INSTALL_ROOT=${placeholder "out"}" ];
+
+  postInstall = ''
+    #ln -s $out/include/QtPdWidgets2 $out/include/QtPdWidgets
+    mv $out/usr/local/* $out/
+    rm -r $out/usr
+  '';
+
+  meta = with lib; {
+    description = "Process-data aware widget library for Qt, that uses PdCom for process variable access.";
+    platforms = platforms.linux;
+  };
+}
diff --git a/testmanager.nix b/testmanager.nix
new file mode 100644
index 0000000..d0c9374
--- /dev/null
+++ b/testmanager.nix
@@ -0,0 +1,48 @@
+{
+  stdenv,
+  lib,
+  pkgs,
+  qtbase,
+  qttools,
+  wrapQtAppsHook,
+  pdcom ? pkgs.callPackage ./pdcom.nix {},
+  qtpdwidgets ? pkgs.libsForQt5.callPackage ./qtpdwidgets.nix {},
+}:
+
+with pkgs;
+let
+  version="master";
+  rev = "ea10d2b5b872ea2269bf08169d18d52212f8a0af"; #master
+in
+stdenv.mkDerivation {
+  name = "testmanager";
+  inherit version;
+
+  src = fetchGit {
+    url = "https://gitlab.com/etherlab.org/testmanager.git";
+    ref = "${version}";
+    inherit rev;
+  };
+  enableParallelBuilding = true;
+
+  buildInputs = [ qtbase qttools python3 pdcom qtpdwidgets ];
+  nativeBuildInputs = [ wrapQtAppsHook ];
+
+  installFlags = [ "INSTALL_ROOT=${placeholder "out"}" ];
+
+  preConfigure = ''
+    #set -x
+    echo ${rev} > revision
+    VERSION=${version} qmake
+  '';
+
+  postInstall = ''
+    mv $out/usr/local/* $out/
+    rm -r $out/usr
+  '';
+
+  meta = with lib; {
+    description = "Dynamic operation and visualization software. Connects to a realtime application via TCP/IP";
+    platforms = platforms.linux;
+  };
+}