diff --git a/pkgs/applications/gis/qgis/unwrapped.nix b/pkgs/applications/gis/qgis/unwrapped.nix
index 5b972ae5017f..2ebe0ac253fe 100644
--- a/pkgs/applications/gis/qgis/unwrapped.nix
+++ b/pkgs/applications/gis/qgis/unwrapped.nix
@@ -77,12 +77,12 @@ in mkDerivation rec {
   # build to use PYQT5_SIP_DIR consistently.
   postPatch = ''
     substituteInPlace cmake/FindPyQt5.py \
-      --replace 'sip_dir = cfg.default_sip_dir' 'sip_dir = "${python3Packages.pyqt5}/share/sip/PyQt5"'
+      --replace 'sip_dir = cfg.default_sip_dir' 'sip_dir = "${python3Packages.pyqt5}/${python3Packages.python.sitePackages}/PyQt5/bindings"'
   '';
 
   cmakeFlags = [
     "-DCMAKE_SKIP_BUILD_RPATH=OFF"
-    "-DPYQT5_SIP_DIR=${python3Packages.pyqt5}/share/sip/PyQt5"
+    "-DPYQT5_SIP_DIR=${python3Packages.pyqt5}/${python3Packages.python.sitePackages}/PyQt5/bindings"
     "-DQSCI_SIP_DIR=${python3Packages.qscintilla-qt5}/share/sip/PyQt5"
   ] ++ lib.optional (!withWebKit) "-DWITH_QTWEBKIT=OFF"
     ++ lib.optional withGrass "-DGRASS_PREFIX7=${grass}/${grass.name}";
diff --git a/pkgs/applications/graphics/krita/default.nix b/pkgs/applications/graphics/krita/default.nix
index 1a83fe9931ff..85830f9a0455 100644
--- a/pkgs/applications/graphics/krita/default.nix
+++ b/pkgs/applications/graphics/krita/default.nix
@@ -32,8 +32,8 @@ mkDerivation rec {
     ++ lib.optional stdenv.cc.isGNU "-Wno-deprecated-copy";
 
   cmakeFlags = [
-    "-DPYQT5_SIP_DIR=${python3Packages.pyqt5}/share/sip/PyQt5"
-    "-DPYQT_SIP_DIR_OVERRIDE=${python3Packages.pyqt5}/share/sip/PyQt5"
+    "-DPYQT5_SIP_DIR=${python3Packages.pyqt5}/${python3Packages.python.sitePackages}/PyQt5/bindings"
+    "-DPYQT_SIP_DIR_OVERRIDE=${python3Packages.pyqt5}/${python3Packages.python.sitePackages}/PyQt5/bindings"
     "-DCMAKE_BUILD_TYPE=RelWithDebInfo"
   ];
 
diff --git a/pkgs/applications/graphics/veusz/default.nix b/pkgs/applications/graphics/veusz/default.nix
index 5c5b1c91709a..d8f1ae76a887 100644
--- a/pkgs/applications/graphics/veusz/default.nix
+++ b/pkgs/applications/graphics/veusz/default.nix
@@ -14,7 +14,7 @@ python3Packages.buildPythonApplication rec {
     sha256 = "4ClgYwiU21wHDve2q9cItSAVb9hbR2F+fJc8znGI8OA=";
   };
 
-  nativeBuildInputs = [ wrapQtAppsHook python3Packages.sip ];
+  nativeBuildInputs = [ wrapQtAppsHook python3Packages.sip_4 ];
 
   buildInputs = [ qtbase ];
 
@@ -25,21 +25,21 @@ python3Packages.buildPythonApplication rec {
     wrapQtApp "$out/bin/veusz"
   '';
 
-  # For some reason, if sip5 is found on the PATH, the option --sip-dir is
-  # ignored in setupPyBuildFlags, see
-  # https://github.com/veusz/veusz/blob/53b99dffa999f2bc41fdc5335d7797ae857c761f/pyqtdistutils.py#L292
+  # Since sip 6 (we use sip 4 here, but pyqt5 is built with sip 6), sip files are
+  # placed in a different directory layout and --sip-dir won't work anymore.
+  # --sip-dir expects a directory with a PyQt5 subdirectory (where sip files are located),
+  # but the new directory layout places sip files in a subdirectory named 'bindings'.
+  # To workaround this, we patch the full path into pyqtdistutils.py.
   postPatch = ''
     substituteInPlace pyqtdistutils.py \
-      --replace "'-I', pyqt5_include_dir," "'-I', '${python3Packages.pyqt5}/share/sip/PyQt5',"
+      --replace "'-I', pyqt5_include_dir," "'-I', '${python3Packages.pyqt5}/${python3Packages.python.sitePackages}/PyQt5/bindings',"
     patchShebangs tests/runselftest.py
   '';
 
   # you can find these options at
   # https://github.com/veusz/veusz/blob/53b99dffa999f2bc41fdc5335d7797ae857c761f/pyqtdistutils.py#L71
+  # --sip-dir cannot be used here for the reasons explained above
   setupPyBuildFlags = [
-    # --sip-dir does nothing here, but it should be the correct way to set the
-    # sip_dir, so I'm leaving it here for future versions
-    "--sip-dir=${python3Packages.pyqt5}/share/sip"
     "--qt-include-dir=${qtbase.dev}/include"
     # veusz tries to find a libinfix and fails without one
     # but we simply don't need a libinfix, so set it to empty here
diff --git a/pkgs/applications/misc/calibre/default.nix b/pkgs/applications/misc/calibre/default.nix
index 40951d5f2ab2..0ee374ac6957 100644
--- a/pkgs/applications/misc/calibre/default.nix
+++ b/pkgs/applications/misc/calibre/default.nix
@@ -41,7 +41,7 @@ mkDerivation rec {
   ++ lib.optional (!unrarSupport) ./dont_build_unrar_plugin.patch;
 
   prePatch = ''
-    sed -i "s@\[tool.sip.project\]@[tool.sip.project]\nsip-include-dirs = [\"${python3Packages.pyqt5}/share/sip/PyQt5\"]@g" \
+    sed -i "s@\[tool.sip.project\]@[tool.sip.project]\nsip-include-dirs = [\"${python3Packages.pyqt5}/${python3Packages.python.sitePackages}/PyQt5/bindings\"]@g" \
       setup/build.py
     sed -i "s/\[tool.sip.bindings.pictureflow\]/[tool.sip.bindings.pictureflow]\ntags = [\"${python3Packages.sip.platform_tag}\"]/g" \
       setup/build.py
diff --git a/pkgs/development/python-modules/pyqt-builder/default.nix b/pkgs/development/python-modules/pyqt-builder/default.nix
index d371fd7bcee7..d116ed275dcf 100644
--- a/pkgs/development/python-modules/pyqt-builder/default.nix
+++ b/pkgs/development/python-modules/pyqt-builder/default.nix
@@ -2,12 +2,12 @@
 
 buildPythonPackage rec {
   pname = "pyqt-builder";
-  version = "1.6.0";
+  version = "1.10.1";
 
   src = fetchPypi {
     pname = "PyQt-builder";
     inherit version;
-    sha256 = "0g51yak53zzjs4gpq65i01cmpz7w8cjny9wfyxlgr2vi0wag107v";
+    sha256 = "05vyckg4pq95s3b23drhd24sjwzic1k36nwckxz5jc83mixhqywn";
   };
 
   propagatedBuildInputs = [ packaging sip ];
@@ -21,5 +21,6 @@ buildPythonPackage rec {
     description = "PEP 517 compliant build system for PyQt";
     homepage = "https://pypi.org/project/PyQt-builder/";
     license = licenses.gpl3Only;
+    maintainers = with maintainers; [ eduardosm ];
   };
 }
diff --git a/pkgs/development/python-modules/pyqt/5.x.nix b/pkgs/development/python-modules/pyqt/5.x.nix
index 2671b27a6307..ae737ca2e638 100644
--- a/pkgs/development/python-modules/pyqt/5.x.nix
+++ b/pkgs/development/python-modules/pyqt/5.x.nix
@@ -1,65 +1,52 @@
-{ lib, pythonPackages, pkg-config
+{ lib
+, buildPythonPackage
+, isPy27
+, fetchPypi
+, pkg-config
 , dbus
-, qmake, lndir
-, qtbase
-, qtsvg
-, qtdeclarative
-, qtwebchannel
-, withConnectivity ? false, qtconnectivity
-, withMultimedia ? false, qtmultimedia
-, withWebKit ? false, qtwebkit
-, withWebSockets ? false, qtwebsockets
+, lndir
+, python
+, dbus-python
+, sip
+, pyqt-builder
+, libsForQt5
+, withConnectivity ? false
+, withMultimedia ? false
+, withWebKit ? false
+, withWebSockets ? false
 }:
 
 let
-
-  inherit (pythonPackages) buildPythonPackage python isPy3k dbus-python enum34;
-
-  sip = if isPy3k then
-    pythonPackages.sip
-  else
-    (pythonPackages.sip_4.override { sip-module = "PyQt5.sip"; }).overridePythonAttrs(oldAttrs: {
-      # If we install sip in another folder, then we need to create a __init__.py as well
-      # if we want to be able to import it with Python 2.
-      # Python 3 could rely on it being an implicit namespace package, however,
-      # PyQt5 we made an explicit namespace package so sip should be as well.
-      postInstall = ''
-        cat << EOF > $out/${python.sitePackages}/PyQt5/__init__.py
-        from pkgutil import extend_path
-        __path__ = extend_path(__path__, __name__)
-        EOF
-      '';
-    });
-
   pyqt5_sip = buildPythonPackage rec {
     pname = "PyQt5_sip";
-    version = "12.8.1";
+    version = "12.9.0";
 
-    src = pythonPackages.fetchPypi {
+    src = fetchPypi {
       inherit pname version;
-      sha256 = "30e944db9abee9cc757aea16906d4198129558533eb7fadbe48c5da2bd18e0bd";
+      sha256 = "0cmfxb7igahxy74qkq199l6zdxrr75bnxris42fww3ibgjflir6k";
     };
 
     # There is no test code and the check phase fails with:
     # > error: could not create 'PyQt5/sip.cpython-38-x86_64-linux-gnu.so': No such file or directory
     doCheck = false;
   };
-
 in buildPythonPackage rec {
   pname = "PyQt5";
-  version = "5.15.2";
-  format = "other";
+  version = "5.15.4";
+  format = "pyproject";
 
-  src = pythonPackages.fetchPypi {
+  disabled = isPy27;
+
+  src = fetchPypi {
     inherit pname version;
-    sha256 = "1z74295i69cha52llsqffzhb5zz7qnbjc64h8qg21l91jgf0harp";
+    sha256 = "1gp5jz71nmg58zsm1h4vzhcphf36rbz37qgsfnzal76i1mz5js9a";
   };
 
   outputs = [ "out" "dev" ];
 
   dontWrapQtApps = true;
 
-  nativeBuildInputs = [
+  nativeBuildInputs = with libsForQt5; [
     pkg-config
     qmake
     lndir
@@ -75,11 +62,12 @@ in buildPythonPackage rec {
     ++ lib.optional withWebSockets qtwebsockets
   ;
 
-  buildInputs = [
+  buildInputs = with libsForQt5; [
     dbus
     qtbase
     qtsvg
     qtdeclarative
+    pyqt-builder
   ]
     ++ lib.optional withConnectivity qtconnectivity
     ++ lib.optional withWebKit qtwebkit
@@ -88,10 +76,11 @@ in buildPythonPackage rec {
 
   propagatedBuildInputs = [
     dbus-python
-  ] ++ (if isPy3k then [ pyqt5_sip ] else [ sip enum34 ]);
+    pyqt5_sip
+  ];
 
   patches = [
-    # Fix some wrong assumptions by ./configure.py
+    # Fix some wrong assumptions by ./project.py
     # TODO: figure out how to send this upstream
     ./pyqt5-fix-dbus-mainloop-support.patch
   ];
@@ -103,36 +92,7 @@ in buildPythonPackage rec {
     WebSocketsEnabled = withWebSockets;
   };
 
-  configurePhase = ''
-    runHook preConfigure
-
-    export PYTHONPATH=$PYTHONPATH:$out/${python.sitePackages}
-
-    ${python.executable} configure.py  -w \
-      --confirm-license \
-      --dbus-moduledir=$out/${python.sitePackages}/dbus/mainloop \
-      --no-qml-plugin \
-      --bindir=$out/bin \
-      --destdir=$out/${python.sitePackages} \
-      --stubsdir=$out/${python.sitePackages}/PyQt5 \
-      --sipdir=$out/share/sip/PyQt5 \
-      --designer-plugindir=$out/plugins/designer
-
-    runHook postConfigure
-  '';
-
-  postInstall = lib.optionalString (!isPy3k) ''
-    ln -s ${sip}/${python.sitePackages}/PyQt5/sip.* $out/${python.sitePackages}/PyQt5/
-    for i in $out/bin/*; do
-      wrapProgram $i --prefix PYTHONPATH : "$PYTHONPATH"
-    done
-
-    # Let's make it a namespace package
-    cat << EOF > $out/${python.sitePackages}/PyQt5/__init__.py
-    from pkgutil import extend_path
-    __path__ = extend_path(__path__, __name__)
-    EOF
-  '';
+  dontConfigure = true;
 
   # Checked using pythonImportsCheck
   doCheck = false;
@@ -150,12 +110,10 @@ in buildPythonPackage rec {
     ++ lib.optional withConnectivity "PyQt5.QtConnectivity"
   ;
 
-  enableParallelBuilding = true;
-
   meta = with lib; {
     description = "Python bindings for Qt5";
-    homepage    = "http://www.riverbankcomputing.co.uk";
-    license     = licenses.gpl3;
+    homepage    = "https://riverbankcomputing.com/";
+    license     = licenses.gpl3Only;
     platforms   = platforms.mesaPlatforms;
     maintainers = with maintainers; [ sander ];
   };
diff --git a/pkgs/development/python-modules/pyqt/pyqt5-fix-dbus-mainloop-support.patch b/pkgs/development/python-modules/pyqt/pyqt5-fix-dbus-mainloop-support.patch
index faa36fa1913d..2f559dcfe6a9 100644
--- a/pkgs/development/python-modules/pyqt/pyqt5-fix-dbus-mainloop-support.patch
+++ b/pkgs/development/python-modules/pyqt/pyqt5-fix-dbus-mainloop-support.patch
@@ -21,7 +21,7 @@ so I have decided to solve this with an extra configure flag.
  1 file changed, 11 insertions(+), 2 deletions(-)
 
 diff --git a/configure.py b/configure.py
-index a3450ca3..440d90a2 100644
+index c6663e4..65e7da7 100644
 --- a/configure.py
 +++ b/configure.py
 @@ -905,6 +905,9 @@ class TargetConfiguration:
@@ -34,7 +34,7 @@ index a3450ca3..440d90a2 100644
          if opts.pyuicinterpreter is not None:
              self.pyuic_interpreter = opts.pyuicinterpreter
  
-@@ -1184,6 +1187,11 @@ def create_optparser(target_config):
+@@ -1191,6 +1194,11 @@ def create_optparser(target_config):
              metavar="DIR",
              help="the directory containing the dbus/dbus-python.h header is "
              "DIR [default: supplied by pkg-config]")
@@ -46,7 +46,7 @@ index a3450ca3..440d90a2 100644
      p.add_option_group(g)
  
      # Installation.
-@@ -2149,7 +2157,7 @@ def check_dbus(target_config, verbose):
+@@ -2277,7 +2285,7 @@ def check_dbus(target_config, verbose):
  
      inform("Checking to see if the dbus support module should be built...")
  
@@ -55,7 +55,7 @@ index a3450ca3..440d90a2 100644
  
      if verbose:
          sys.stdout.write(cmd + "\n")
-@@ -2178,7 +2186,8 @@ def check_dbus(target_config, verbose):
+@@ -2307,7 +2315,8 @@ def check_dbus(target_config, verbose):
          inform("The Python dbus module doesn't seem to be installed.")
          return
  
@@ -65,6 +65,16 @@ index a3450ca3..440d90a2 100644
  
      # Try and find dbus-python.h.  We don't use pkg-config because it is broken
      # for dbus-python (at least for versions up to and including v0.81.0).
--- 
-2.18.0
-
+diff --git a/project.py b/project.py
+index fe9fbce..9ae1ca1 100644
+--- a/project.py
++++ b/project.py
+@@ -261,7 +261,7 @@ del find_qt
+         dbus_lib_dirs = []
+         dbus_libs = []
+ 
+-        args = ['pkg-config', '--cflags-only-I', '--libs dbus-1']
++        args = ['pkg-config', '--cflags-only-I', '--libs dbus-1', 'dbus-python']
+ 
+         for line in self.read_command_pipe(args, fatal=False):
+             for flag in line.strip().split():
diff --git a/pkgs/development/python-modules/pyqtwebengine/default.nix b/pkgs/development/python-modules/pyqtwebengine/default.nix
index ce25bc04a136..f59694876cc4 100644
--- a/pkgs/development/python-modules/pyqtwebengine/default.nix
+++ b/pkgs/development/python-modules/pyqtwebengine/default.nix
@@ -4,25 +4,23 @@
 }:
 
 let
-
-  inherit (pythonPackages) buildPythonPackage python isPy3k pyqt5 enum34;
-  inherit (pyqt5) sip;
-  # source: https://www.riverbankcomputing.com/pipermail/pyqt/2020-June/042985.html
-  patches = lib.optional (lib.hasPrefix "5.14" pyqt5.version)
-    [ ./fix-build-with-qt-514.patch ]
-  ;
-
+  inherit (pythonPackages) buildPythonPackage python isPy27 pyqt5 enum34 sip pyqt-builder;
 in buildPythonPackage rec {
   pname = "PyQtWebEngine";
   version = "5.15.4";
-  format = "other";
+  format = "pyproject";
+
+  disabled = isPy27;
 
   src = pythonPackages.fetchPypi {
     inherit pname version;
     sha256 = "06fc35hzg346a9c86dk7vzm1fakkgzn5l52jfq3bix3587sjip6f";
   };
 
-  inherit patches;
+  postPatch = ''
+    substituteInPlace pyproject.toml \
+      --replace "[tool.sip.project]" "[tool.sip.project]''\nsip-include-dirs = [\"${pyqt5}/${python.sitePackages}/PyQt5/bindings\"]"
+  '';
 
   outputs = [ "out" "dev" ];
 
@@ -33,6 +31,7 @@ in buildPythonPackage rec {
     qtbase
     qtsvg
     qtwebengine
+    pyqt-builder
   ];
 
   buildInputs = [
@@ -42,49 +41,20 @@ in buildPythonPackage rec {
     qtwebengine
   ];
 
-  propagatedBuildInputs = [ pyqt5 ]
-    ++ lib.optional (!isPy3k) enum34;
+  propagatedBuildInputs = [ pyqt5 ];
 
   dontWrapQtApps = true;
 
-  configurePhase = ''
-    runHook preConfigure
+  # Avoid running qmake, which is in nativeBuildInputs
+  dontConfigure = true;
 
-    mkdir -p "$out/share/sip/PyQt5"
+  # Checked using pythonImportsCheck
+  doCheck = false;
 
-    # FIXME: Without --no-dist-info, I get
-    #     unable to create /nix/store/yv4pzx3lxk3lscq0pw3hqzs7k4x76xsm-python3-3.7.2/lib/python3.7/site-packages/PyQtWebEngine-5.12.dist-info
-    ${python.executable} configure.py -w \
-      --destdir="$out/${python.sitePackages}/PyQt5" \
-      --no-dist-info \
-      --apidir="$out/api/${python.libPrefix}" \
-      --sipdir="$out/share/sip/PyQt5" \
-      --pyqt-sipdir="${pyqt5}/share/sip/PyQt5" \
-      --stubsdir="$out/${python.sitePackages}/PyQt5"
-
-    runHook postConfigure
-  '';
-
-  postInstall = ''
-    # Let's make it a namespace package
-    cat << EOF > $out/${python.sitePackages}/PyQt5/__init__.py
-    from pkgutil import extend_path
-    __path__ = extend_path(__path__, __name__)
-    EOF
-  '';
-
-  installCheckPhase = let
-    modules = [
-      "PyQt5.QtWebEngine"
-      "PyQt5.QtWebEngineWidgets"
-    ];
-    imports = lib.concatMapStrings (module: "import ${module};") modules;
-  in ''
-    echo "Checking whether modules can be imported..."
-    PYTHONPATH=$PYTHONPATH:$out/${python.sitePackages} ${python.interpreter} -c "${imports}"
-  '';
-
-  doCheck = true;
+  pythonImportsCheck = [
+    "PyQt5.QtWebEngine"
+    "PyQt5.QtWebEngineWidgets"
+  ];
 
   enableParallelBuilding = true;
 
diff --git a/pkgs/development/python-modules/qscintilla-qt5/default.nix b/pkgs/development/python-modules/qscintilla-qt5/default.nix
index 05c12c1c62af..70ee43089134 100644
--- a/pkgs/development/python-modules/qscintilla-qt5/default.nix
+++ b/pkgs/development/python-modules/qscintilla-qt5/default.nix
@@ -3,13 +3,17 @@
 , qscintilla
 , qtbase
 }:
-with pythonPackages;
-buildPythonPackage {
+
+let
+  inherit (pythonPackages) buildPythonPackage isPy3k python sip_4 pyqt5;
+in buildPythonPackage rec {
   pname = "qscintilla";
   version = qscintilla.version;
   src = qscintilla.src;
   format = "other";
 
+  disabled = !isPy3k;
+
   nativeBuildInputs = [ sip_4 qtbase ];
   buildInputs = [ qscintilla ];
   propagatedBuildInputs = [ pyqt5 ];
@@ -38,11 +42,21 @@ buildPythonPackage {
       --qsci-incdir=${qscintilla}/include \
       --qsci-featuresdir=${qscintilla}/mkspecs/features \
       --qsci-libdir=${qscintilla}/lib \
-      --pyqt-sipdir=${pyqt5}/share/sip/PyQt5 \
+      --pyqt-sipdir=${pyqt5}/${python.sitePackages}/PyQt5/bindings \
       --qsci-sipdir=$out/share/sip/PyQt5 \
       --sip-incdir=${sip_4}/include
   '';
 
+  postInstall = ''
+    # Needed by pythonImportsCheck to find the module
+    export PYTHONPATH="$out/${python.sitePackages}:$PYTHONPATH"
+  '';
+
+  # Checked using pythonImportsCheck
+  doCheck = false;
+
+  pythonImportsCheck = [ "PyQt5.Qsci" ];
+
   meta = with lib; {
     description = "A Python binding to QScintilla, Qt based text editing control";
     license = licenses.lgpl21Plus;
diff --git a/pkgs/development/python-modules/sip/4.x.nix b/pkgs/development/python-modules/sip/4.x.nix
index 5334d1196344..5f6a3a5f82f2 100644
--- a/pkgs/development/python-modules/sip/4.x.nix
+++ b/pkgs/development/python-modules/sip/4.x.nix
@@ -36,7 +36,7 @@ buildPythonPackage rec {
 
   meta = with lib; {
     description = "Creates C++ bindings for Python modules";
-    homepage    = "http://www.riverbankcomputing.co.uk/";
+    homepage    = "https://riverbankcomputing.com/";
     license     = licenses.gpl2Plus;
     maintainers = with maintainers; [ lovek323 sander ];
     platforms   = platforms.all;
diff --git a/pkgs/development/python-modules/sip/default.nix b/pkgs/development/python-modules/sip/default.nix
index c15589b77bc8..b3945696b7e9 100644
--- a/pkgs/development/python-modules/sip/default.nix
+++ b/pkgs/development/python-modules/sip/default.nix
@@ -2,12 +2,12 @@
 
 buildPythonPackage rec {
   pname = "sip";
-  version = "5.5.0";
+  version = "6.1.1";
 
   src = fetchPypi {
     pname = "sip";
     inherit version;
-    sha256 = "1idaivamp1jvbbai9yzv471c62xbqxhaawccvskaizihkd0lq0jx";
+    sha256 = "083ykzg7zbvrfrg3ram2vx93zrmhpm817kf9bkhw8r6pzkr5mljj";
   };
 
   propagatedBuildInputs = [ packaging toml ];
@@ -33,7 +33,7 @@ buildPythonPackage rec {
 
   meta = with lib; {
     description = "Creates C++ bindings for Python modules";
-    homepage    = "http://www.riverbankcomputing.co.uk/";
+    homepage    = "https://riverbankcomputing.com/";
     license     = licenses.gpl3Only;
     maintainers = with maintainers; [ eduardosm ];
   };
diff --git a/pkgs/misc/drivers/hplip/3.18.5.nix b/pkgs/misc/drivers/hplip/3.18.5.nix
deleted file mode 100644
index 3c2f8fa2a08f..000000000000
--- a/pkgs/misc/drivers/hplip/3.18.5.nix
+++ /dev/null
@@ -1,229 +0,0 @@
-{ lib, stdenv, fetchurl, substituteAll
-, pkg-config
-, cups, zlib, libjpeg, libusb1, python2Packages, sane-backends
-, dbus, file, ghostscript, usbutils
-, net-snmp, openssl, perl, nettools
-, bash, coreutils, util-linux
-, withQt5 ? true
-, withPlugin ? false
-, withStaticPPDInstall ? false
-}:
-
-let
-
-  name = "hplip-${version}";
-  version = "3.18.5";
-
-  src = fetchurl {
-    url = "mirror://sourceforge/hplip/${name}.tar.gz";
-    sha256 = "0xb7ga2wgbwjxsss67mjn2y6fmqsfwzmv11ivvfzhnl36lh22hkb";
-  };
-
-  plugin = fetchurl {
-    url = "https://www.openprinting.org/download/printdriver/auxfiles/HP/plugins/${name}-plugin.run";
-    sha256 = "1jf74jya071zqvwhy9n0c3007pzgcxydkw7qdh4sx70brly81i7p";
-  };
-
-  hplipState = substituteAll {
-    inherit version;
-    src = ./hplip.state;
-  };
-
-  hplipPlatforms = {
-    i686-linux    = "x86_32";
-    x86_64-linux  = "x86_64";
-    armv6l-linux  = "arm32";
-    armv7l-linux  = "arm32";
-    aarch64-linux = "arm64";
-  };
-
-  hplipArch = hplipPlatforms.${stdenv.hostPlatform.system}
-    or (throw "HPLIP not supported on ${stdenv.hostPlatform.system}");
-
-  pluginArches = [ "x86_32" "x86_64" "arm32" "arm64" ];
-
-in
-
-assert withPlugin -> builtins.elem hplipArch pluginArches
-  || throw "HPLIP plugin not supported on ${stdenv.hostPlatform.system}";
-
-python2Packages.buildPythonApplication {
-  inherit name src;
-  format = "other";
-
-  buildInputs = [
-    libjpeg
-    cups
-    libusb1
-    sane-backends
-    dbus
-    file
-    ghostscript
-    net-snmp
-    openssl
-    perl
-    zlib
-  ];
-
-  nativeBuildInputs = [
-    pkg-config
-  ];
-
-  pythonPath = with python2Packages; [
-    dbus
-    pillow
-    pygobject2
-    reportlab
-    usbutils
-    sip_4
-  ] ++ lib.optionals withQt5 [
-    pyqt5
-  ];
-
-  makeWrapperArgs = [ "--prefix" "PATH" ":" "${nettools}/bin" ];
-
-  prePatch = ''
-    # HPLIP hardcodes absolute paths everywhere. Nuke from orbit.
-    find . -type f -exec sed -i \
-      -e s,/etc/hp,$out/etc/hp,g \
-      -e s,/etc/sane.d,$out/etc/sane.d,g \
-      -e s,/usr/include/libusb-1.0,${libusb1.dev}/include/libusb-1.0,g \
-      -e s,/usr/share/hal/fdi/preprobe/10osvendor,$out/share/hal/fdi/preprobe/10osvendor,g \
-      -e s,/usr/lib/systemd/system,$out/lib/systemd/system,g \
-      -e s,/var/lib/hp,$out/var/lib/hp,g \
-      -e s,/usr/bin/perl,${perl}/bin/perl,g \
-      -e s,/usr/bin/file,${file}/bin/file,g \
-      -e s,/usr/bin/gs,${ghostscript}/bin/gs,g \
-      -e s,/usr/share/cups/fonts,${ghostscript}/share/ghostscript/fonts,g \
-      -e "s,ExecStart=/usr/bin/python /usr/bin/hp-config_usb_printer,ExecStart=$out/bin/hp-config_usb_printer,g" \
-      {} +
-  '';
-
-  preConfigure = ''
-    export configureFlags="$configureFlags
-      --with-hpppddir=$out/share/cups/model/HP
-      --with-cupsfilterdir=$out/lib/cups/filter
-      --with-cupsbackenddir=$out/lib/cups/backend
-      --with-icondir=$out/share/applications
-      --with-systraydir=$out/xdg/autostart
-      --with-mimedir=$out/etc/cups
-      --enable-policykit
-      ${lib.optionalString withStaticPPDInstall "--enable-cups-ppd-install"}
-      --disable-qt4
-      ${lib.optionalString withQt5 "--enable-qt5"}
-    "
-
-    export makeFlags="
-      halpredir=$out/share/hal/fdi/preprobe/10osvendor
-      rulesdir=$out/etc/udev/rules.d
-      policykit_dir=$out/share/polkit-1/actions
-      policykit_dbus_etcdir=$out/etc/dbus-1/system.d
-      policykit_dbus_sharedir=$out/share/dbus-1/system-services
-      hplip_confdir=$out/etc/hp
-      hplip_statedir=$out/var/lib/hp
-    "
-
-    # Prevent 'ppdc: Unable to find include file "<font.defs>"' which prevent
-    # generation of '*.ppd' files.
-    # This seems to be a 'ppdc' issue when the tool is run in a hermetic sandbox.
-    # Could not find how to fix the problem in 'ppdc' so this is a workaround.
-    export CUPS_DATADIR="${cups}/share/cups"
-  '';
-
-  enableParallelBuilding = true;
-
-  #
-  # Running `hp-diagnose_plugin -g` can be used to diagnose
-  # issues with plugins.
-  #
-  postInstall = lib.optionalString withPlugin ''
-    sh ${plugin} --noexec --keep
-    cd plugin_tmp
-
-    cp plugin.spec $out/share/hplip/
-
-    mkdir -p $out/share/hplip/data/firmware
-    cp *.fw.gz $out/share/hplip/data/firmware
-
-    mkdir -p $out/share/hplip/data/plugins
-    cp license.txt $out/share/hplip/data/plugins
-
-    mkdir -p $out/share/hplip/prnt/plugins
-    for plugin in lj hbpl1; do
-      cp $plugin-${hplipArch}.so $out/share/hplip/prnt/plugins
-      chmod 0755 $out/share/hplip/prnt/plugins/$plugin-${hplipArch}.so
-      ln -s $out/share/hplip/prnt/plugins/$plugin-${hplipArch}.so \
-        $out/share/hplip/prnt/plugins/$plugin.so
-    done
-
-    mkdir -p $out/share/hplip/scan/plugins
-    for plugin in bb_soap bb_marvell bb_soapht bb_escl; do
-      cp $plugin-${hplipArch}.so $out/share/hplip/scan/plugins
-      chmod 0755 $out/share/hplip/scan/plugins/$plugin-${hplipArch}.so
-      ln -s $out/share/hplip/scan/plugins/$plugin-${hplipArch}.so \
-        $out/share/hplip/scan/plugins/$plugin.so
-    done
-
-    mkdir -p $out/share/hplip/fax/plugins
-    for plugin in fax_marvell; do
-      cp $plugin-${hplipArch}.so $out/share/hplip/fax/plugins
-      chmod 0755 $out/share/hplip/fax/plugins/$plugin-${hplipArch}.so
-      ln -s $out/share/hplip/fax/plugins/$plugin-${hplipArch}.so \
-        $out/share/hplip/fax/plugins/$plugin.so
-    done
-
-    mkdir -p $out/var/lib/hp
-    cp ${hplipState} $out/var/lib/hp/hplip.state
-  '';
-
-  # The installed executables are just symlinks into $out/share/hplip,
-  # but wrapPythonPrograms ignores symlinks. We cannot replace the Python
-  # modules in $out/share/hplip with wrapper scripts because they import
-  # each other as libraries. Instead, we emulate wrapPythonPrograms by
-  # 1. Calling patchPythonProgram on the original script in $out/share/hplip
-  # 2. Making our own wrapper pointing directly to the original script.
-  dontWrapPythonPrograms = true;
-  preFixup = ''
-    buildPythonPath "$out $pythonPath"
-
-    for bin in $out/bin/*; do
-      py=$(readlink -m $bin)
-      rm $bin
-      echo "patching \`$py'..."
-      patchPythonScript "$py"
-      echo "wrapping \`$bin'..."
-      makeWrapper "$py" "$bin" \
-          --prefix PATH ':' "$program_PATH" \
-          --set PYTHONNOUSERSITE "true" \
-          $makeWrapperArgs
-    done
-  '';
-
-  # There are some binaries there, which reference gcc-unwrapped otherwise.
-  stripDebugList = [
-    "share/hplip"
-  ];
-
-  postFixup = ''
-    substituteInPlace $out/etc/hp/hplip.conf --replace /usr $out
-    # Patch udev rules:
-    # with plugin, they upload firmware to printers,
-    # without plugin, they complain about the missing plugin.
-    substituteInPlace $out/etc/udev/rules.d/56-hpmud.rules \
-      --replace {,${bash}}/bin/sh \
-      --replace /usr/bin/nohup "" \
-      --replace {,${util-linux}/bin/}logger \
-      --replace {/usr,$out}/bin
-  '';
-
-  meta = with lib; {
-    description = "Print, scan and fax HP drivers for Linux";
-    homepage = "https://developers.hp.com/hp-linux-imaging-and-printing";
-    downloadPage = "https://sourceforge.net/projects/hplip/files/hplip/";
-    license = if withPlugin
-      then licenses.unfree
-      else with licenses; [ mit bsd2 gpl2Plus ];
-    platforms = [ "i686-linux" "x86_64-linux" "armv6l-linux" "armv7l-linux" "aarch64-linux" ];
-    maintainers = with maintainers; [ jgeerds ttuegel ];
-  };
-}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 2ae2cee9d8df..6b332b1a02cd 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -30745,10 +30745,6 @@ in
 
   hplipWithPlugin_3_16_11 = hplip_3_16_11.override { withPlugin = true; };
 
-  hplip_3_18_5 = callPackage ../misc/drivers/hplip/3.18.5.nix { };
-
-  hplipWithPlugin_3_18_5 = hplip_3_18_5.override { withPlugin = true; };
-
   hyperfine = callPackage ../tools/misc/hyperfine {
     inherit (darwin.apple_sdk.frameworks) Security;
   };
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index b18a424ea36a..cb071289770f 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -6349,9 +6349,7 @@ in {
 
   pyqt4 = callPackage ../development/python-modules/pyqt/4.x.nix { };
 
-  pyqt5 = pkgs.libsForQt5.callPackage ../development/python-modules/pyqt/5.x.nix {
-    pythonPackages = self;
-  };
+  pyqt5 = callPackage ../development/python-modules/pyqt/5.x.nix { };
 
   pyqt5_with_qtmultimedia = self.pyqt5.override {
     withMultimedia = true;