csound: clean after python-qt update

pkgs/applications/audio/csound/csound-qt/default.nix

···
 { lib, stdenv, csound, desktop-file-utils,
-  fetchFromGitHub, python, python-qt, qmake,
+  fetchFromGitHub, python3, python-qt, qmake,
   qtwebengine, qtxmlpatterns, rtmidi, wrapQtAppsHook }:
 
 stdenv.mkDerivation rec {
···
                  "CSOUND_INCLUDE_DIR=${csound}/include/csound"
                  "CSOUND_LIBRARY_DIR=${csound}/lib"
                  "RTMIDI_DIR=${rtmidi.src}"
-                 "PYTHONQT_SRC_DIR=${python-qt}/include/PythonQt"
+                 "PYTHONQT_SRC_DIR=${python-qt.src}"
                  "PYTHONQT_LIB_DIR=${python-qt}/lib"
                  "LIBS+=-L${python-qt}/lib"
-                 "INCLUDEPATH+=${python-qt}/include/PythonQt"
-                 "INCLUDEPATH+=${python}/include/python${python.pythonVersion}"
                  "INSTALL_DIR=${placeholder "out"}"
                  "SHARE_DIR=${placeholder "out"}/share"
+                 "PYTHON_DIR=${python3}"
+                 "PYTHON_VERSION=3.${python3.sourceVersion.minor}"
                  ];
 
   meta = with lib; {

pkgs/top-level/all-packages.nix

···
 
   csound-manual = callPackage ../applications/audio/csound/csound-manual { };
 
-  csound-qt = libsForQt5.callPackage ../applications/audio/csound/csound-qt {
-    python = python3;
-  };
+  csound-qt = libsForQt5.callPackage ../applications/audio/csound/csound-qt { };
 
   codeblocks = callPackage ../applications/editors/codeblocks { };
   codeblocksFull = codeblocks.override { contribPlugins = true; };