diff --git a/maintainers/maintainer-list.nix b/maintainers/maintainer-list.nix
index 3a8c5e5a76b..458de9f89d8 100644
--- a/maintainers/maintainer-list.nix
+++ b/maintainers/maintainer-list.nix
@@ -6308,10 +6308,6 @@
     githubId = 23097564;
     name = "Nora Widdecke";
   };
-  pxc = {
-    email = "patrick.callahan@latitudeengineering.com";
-    name = "Patrick Callahan";
-  };
   pyrolagus = {
     email = "pyrolagus@gmail.com";
     github = "PyroLagus";
diff --git a/pkgs/applications/science/robotics/gazebo/6.nix b/pkgs/applications/science/robotics/gazebo/6.nix
deleted file mode 100644
index 80c52b49e47..00000000000
--- a/pkgs/applications/science/robotics/gazebo/6.nix
+++ /dev/null
@@ -1,8 +0,0 @@
-{ stdenv, fetchurl, callPackage, ignition, gazeboSimulator, ... } @ args:
-
-callPackage ./default.nix (args // {
-  version = "6.5.1";
-  src-sha256 = "96260aa23f1a1f24bc116f8e359d31f3bc65011033977cb7fb2c64d574321908";
-  sdformat = gazeboSimulator.sdformat3;
-})
-
diff --git a/pkgs/applications/science/robotics/gazebo/default.nix b/pkgs/applications/science/robotics/gazebo/default.nix
deleted file mode 100644
index 86572e73c75..00000000000
--- a/pkgs/applications/science/robotics/gazebo/default.nix
+++ /dev/null
@@ -1,84 +0,0 @@
-{ stdenv, fetchurl, cmake, pkgconfig, boost, protobuf, freeimage
-  , boost-build, boost_process
-  , xorg_sys_opengl, tbb, ogre, tinyxml-2
-  , libtar, glxinfo,  libusb-compat-0_1, libxslt, ignition
-  , pythonPackages, utillinux
-
-  # these deps are hidden; cmake doesn't catch them
-  , gazeboSimulator, sdformat ? gazeboSimulator.sdformat, curl, tinyxml, qt4
-  , xlibsWrapper
-  , withIgnitionTransport ? true
-  , libav, withLibAvSupport ? true
-  , openal, withAudioSupport ? false
-  , withQuickBuild ? false, withHeadless ? false, withLowMemorySupport ? false
-  , doxygen, withDocs ? true
-  , bullet, withBulletEngineSupport ? false
-  , graphviz, withModelEditorSchematicView ? true # graphviz needed for this view
-  , gdal, withDigitalElevationTerrainsSupport ? true
-  , gts, withConstructiveSolidGeometrySupport ? true
-  , hdf5, withHdf5Support ? true
-  , version ? "7.0.0"
-  , src-sha256 ? "127q2g93kvmak2b6vhl13xzg56h09v14s4pki8wv7aqjv0c3whbl"
-  , ...
-}: with stdenv.lib;
-
-stdenv.mkDerivation rec {
-  inherit version;
-  pname = "gazebo";
-
-  src = fetchurl {
-    url = "https://osrf-distributions.s3.amazonaws.com/gazebo/releases/${pname}-${version}.tar.bz2";
-    sha256 = src-sha256;
-  };
-
-  enableParallelBuilding = true; # gazebo needs this so bad
-  cmakeFlags = [
-  "-DCMAKE_INSTALL_LIBDIR:PATH=lib"
-  "-DCMAKE_INSTALL_INCLUDEDIR=include" ]
-    ++ optional withQuickBuild [ "-DENABLE_TESTS_COMPILATION=False" ]
-    ++ optional withLowMemorySupport [ "-DUSE_LOW_MEMORY_TESTS=True" ]
-    ++ optional withHeadless [ "-DENABLE_SCREEN_TESTS=False" ];
-
-  nativeBuildInputs = [ cmake pkgconfig ];
-
-  propagatedNativeBuildInputs = [ boost boost-build boost_process protobuf ];
-
-  buildInputs = [
-    #cmake boost protobuf
-    freeimage
-    xorg_sys_opengl
-    tbb
-    ogre
-    tinyxml-2
-    libtar
-    glxinfo
-    libusb-compat-0_1
-    libxslt
-    ignition.math2
-    sdformat
-    pythonPackages.pyopengl
-
-    # TODO: add these hidden deps to cmake configuration & submit upstream
-    curl
-    tinyxml
-    xlibsWrapper
-    qt4
-  ] ++ optional stdenv.isLinux utillinux # on Linux needs uuid/uuid.h
-    ++ optional withDocs doxygen
-    ++ optional withLibAvSupport libav  #TODO: package rubygem-ronn and put it here
-    ++ optional withAudioSupport openal
-    ++ optional withBulletEngineSupport bullet
-    ++ optional withIgnitionTransport ignition.transport
-    ++ optional withModelEditorSchematicView graphviz
-    ++ optional withDigitalElevationTerrainsSupport gdal
-    ++ optional withConstructiveSolidGeometrySupport gts
-    ++ optional withHdf5Support hdf5;
-
-  meta = with stdenv.lib; {
-    homepage = "http://gazebosim.org/";
-    description = "Multi-robot simulator for outdoor environments";
-    license = licenses.asl20;
-    maintainers = with maintainers; [ pxc ];
-    platforms = platforms.all;
-  };
-}
diff --git a/pkgs/applications/science/robotics/qgroundcontrol/default.nix b/pkgs/applications/science/robotics/qgroundcontrol/default.nix
index c17ffb00118..1f9d43b3352 100644
--- a/pkgs/applications/science/robotics/qgroundcontrol/default.nix
+++ b/pkgs/applications/science/robotics/qgroundcontrol/default.nix
@@ -70,6 +70,6 @@ mkDerivation rec {
     homepage = "http://qgroundcontrol.org/";
     license = licenses.gpl3Plus;
     platforms = platforms.linux;
-    maintainers = with maintainers; [ pxc ];
+    maintainers = with maintainers; [ ];
   };
 }
diff --git a/pkgs/development/libraries/ignition-math/default.nix b/pkgs/development/libraries/ignition-math/default.nix
deleted file mode 100644
index df4c3230b96..00000000000
--- a/pkgs/development/libraries/ignition-math/default.nix
+++ /dev/null
@@ -1,27 +0,0 @@
-{ stdenv, fetchurl, cmake }:
-
-let
-  version = "2.6.0";
-in
-stdenv.mkDerivation {
-  pname = "ign-math2";
-  inherit version;
-
-  src = fetchurl {
-    url = "http://gazebosim.org/distributions/ign-math/releases/ignition-math2-${version}.tar.bz2";
-    sha256 = "1d4naq0zp704c7ckj2wwmhplxmwkvcs1jib8bklnnd09lhg9j92j";
-  };
-
-  buildInputs = [ cmake ];
-  preConfigure = ''
-    cmakeFlags="$cmakeFlags -DCMAKE_INSTALL_INCLUDEDIR=include -DCMAKE_INSTALL_LIBDIR=lib"
-  '';
-
-  meta = with stdenv.lib; {
-    homepage = "https://ignitionrobotics.org/libraries/math";
-    description = "Math library by Ingition Robotics, created for the Gazebo project";
-    license = licenses.asl20;
-    maintainers = with maintainers; [ pxc ];
-    platforms = platforms.all;
-  };
-}
diff --git a/pkgs/development/libraries/ignition-transport/0.9.0.nix b/pkgs/development/libraries/ignition-transport/0.9.0.nix
deleted file mode 100644
index 3452c72839f..00000000000
--- a/pkgs/development/libraries/ignition-transport/0.9.0.nix
+++ /dev/null
@@ -1,9 +0,0 @@
-{ stdenv, fetchurl, callPackage, ... } @ args :
-
-callPackage ./generic.nix (args // rec {
-  version = "0.9.0";
-  src = fetchurl {
-    url = "http://gazebosim.org/distributions/ign-transport/releases/ignition-transport-${version}.tar.bz2";
-    sha256 = "15a8lkxri8q2gc7h0pj1dg2kivhy46v8d3mlxpjy90l77788bw1z";
-  };
-})
diff --git a/pkgs/development/libraries/ignition-transport/1.0.1.nix b/pkgs/development/libraries/ignition-transport/1.0.1.nix
deleted file mode 100644
index 2f9605a3a72..00000000000
--- a/pkgs/development/libraries/ignition-transport/1.0.1.nix
+++ /dev/null
@@ -1,9 +0,0 @@
-{ stdenv, fetchurl, callPackage, ... } @ args :
-
-callPackage ./generic.nix (args // rec {
-  version = "1.0.1";
-  src = fetchurl {
-    url = "http://gazebosim.org/distributions/ign-transport/releases/ignition-transport-${version}.tar.bz2";
-    sha256 = "08qyd70vlymms1g4smblags9f057zsn62xxrx29rhd4wy8prnjsq";
-  };
-})
diff --git a/pkgs/development/libraries/ignition-transport/generic.nix b/pkgs/development/libraries/ignition-transport/generic.nix
deleted file mode 100644
index 2573c97aa09..00000000000
--- a/pkgs/development/libraries/ignition-transport/generic.nix
+++ /dev/null
@@ -1,32 +0,0 @@
-{ stdenv, cmake, pkgconfig, utillinux,
-  protobuf, zeromq, cppzmq,
-  version, src    # parametrize version and src so we can easily have pkgs
-                  # for different versions
-  , ...
-}:
-
-stdenv.mkDerivation {
-  pname = "ign-transport";
-  inherit version;
-  inherit src;
-
-  nativeBuildInputs = [ pkgconfig ];
-  buildInputs = [ cmake protobuf zeromq
-    utillinux # we need utillinux/e2fsprogs uuid/uuid.h
-  ];
-
-  propagatedBuildInputs = [ cppzmq ];
-
-  postPatch = ''
-    substituteInPlace cmake/ignition-config.cmake.in --replace "@CMAKE_INSTALL_PREFIX@/@CMAKE_INSTALL_" "@CMAKE_INSTALL_"
-  '';
-
-  meta = with stdenv.lib; {
-    homepage = "https://ignitionrobotics.org/libraries/math";
-    description = "Math library by Ingition Robotics, created for the Gazebo project";
-    license = licenses.asl20;
-    maintainers = with maintainers; [ pxc ];
-    platforms = platforms.all;
-    broken = true; # 2018-04-10
-  };
-}
diff --git a/pkgs/development/libraries/sdformat/3.nix b/pkgs/development/libraries/sdformat/3.nix
deleted file mode 100644
index b78f1d5624c..00000000000
--- a/pkgs/development/libraries/sdformat/3.nix
+++ /dev/null
@@ -1,7 +0,0 @@
-{ stdenv, fetchurl, callPackage, ... } @ args:
-
-callPackage ./default.nix (args // {
-  version = "3.7.0";
-  srchash-sha256 = "07kn8bgvj9mwwinsp2cbmz11z7zw2lgnj61mi1gi1pjg7q9in98q";
-})
-
diff --git a/pkgs/development/libraries/sdformat/default.nix b/pkgs/development/libraries/sdformat/default.nix
deleted file mode 100644
index 66ad311387f..00000000000
--- a/pkgs/development/libraries/sdformat/default.nix
+++ /dev/null
@@ -1,29 +0,0 @@
-{ stdenv, fetchurl, cmake, boost, ruby, ignition, tinyxml
-  , name ? "sdformat-${version}"
-  , version ? "4.0.0" # versions known to work with this expression include 3.7.0
-  , srchash-sha256 ? "b0f94bb40b0d83e35ff250a7916fdfd6df5cdc1e60c47bc53dd2da5e2378163e"
-  , ...
-  }:
-
-stdenv.mkDerivation {
-  src = fetchurl { 
-      url = "http://osrf-distributions.s3.amazonaws.com/sdformat/releases/${name}.tar.bz2";
-      sha256 = srchash-sha256;
-  };
-
-  inherit name;
-
-  prePatch = ''
-    substituteInPlace cmake/sdf_config.cmake.in --replace "@CMAKE_INSTALL_PREFIX@/@LIB_INSTALL_DIR@" "@LIB_INSTALL_DIR@"
-  '';
-
-  enableParallelBuilding = true;
-  buildInputs = [
-    cmake boost ruby ignition.math2 tinyxml
-  ];
-
-  meta = {
-    broken = true;
-    platforms = stdenv.lib.platforms.unix;
-  };
-}
diff --git a/pkgs/tools/filesystems/genromfs/default.nix b/pkgs/tools/filesystems/genromfs/default.nix
index d9d97a424bd..4adf124d529 100644
--- a/pkgs/tools/filesystems/genromfs/default.nix
+++ b/pkgs/tools/filesystems/genromfs/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
     homepage = "http://romfs.sourceforge.net/";
     description = "Tool for creating romfs file system images";
     license = licenses.gpl2;
-    maintainers = with maintainers; [ pxc ];
+    maintainers = with maintainers; [ ];
     platforms = platforms.all;
   };
 }
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 59632367b61..f51e4c12a08 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -3649,28 +3649,6 @@ in
 
   gawp = callPackage ../tools/misc/gawp { };
 
-  gazeboSimulator = recurseIntoAttrs rec {
-    sdformat = gazeboSimulator.sdformat4;
-
-    sdformat3 = callPackage ../development/libraries/sdformat/3.nix { };
-
-    sdformat4 = callPackage ../development/libraries/sdformat { };
-
-    gazebo6 = callPackage ../applications/science/robotics/gazebo/6.nix { boost = boost160; };
-
-    gazebo6-headless = gazebo6.override { withHeadless = true;  };
-
-    gazebo7 = callPackage ../applications/science/robotics/gazebo { };
-
-    gazebo7-headless = gazebo7.override { withHeadless = true; };
-
-  };
-
-  # at present, Gazebo 7.0.0 does not match Gazebo 6.5.1 for compatibility
-  gazebo = gazeboSimulator.gazebo6;
-
-  gazebo-headless = gazeboSimulator.gazebo6-headless;
-
   gbdfed = callPackage ../tools/misc/gbdfed {
     gtk = gtk2-x11;
   };
@@ -4298,20 +4276,6 @@ in
       irods
       irods-icommands;
 
-  ignition = recurseIntoAttrs {
-
-    math = callPackage ../development/libraries/ignition-math { };
-
-    math2 = ignition.math;
-
-    transport0 = callPackage ../development/libraries/ignition-transport/0.9.0.nix { };
-
-    transport1 = callPackage ../development/libraries/ignition-transport/1.0.1.nix { };
-
-    transport = ignition.transport0;
-  };
-
-
   ihaskell = callPackage ../development/tools/haskell/ihaskell/wrapper.nix {
     inherit (haskellPackages) ghcWithPackages;