bug#31637: PyQt is broken.

[Fis Trivial]

$ guix --version

guix (GNU Guix) 6fe165770539a4551b303dc5cd52db6c51c7604a

Here is the last part of build log:

make[1]: Entering directory 
'/tmp/guix-build-python-pyqt-5.9.drv-0/PyQt5_gpl-5.9/QtTest'
g++ -c -pipe -O2 -std=gnu++11 -fno-exceptions -Wall -W -D_REENTRANT -fPIC 
-DSIP_PROTECTED_IS_PUBLIC -Dprotected=public -DQT_NO_EXCEPTIONS -DQT_NO_DEBUG 
-DQT_PLUGIN -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_TESTLIB_LIB -DQT_CORE_LIB 
-DQT_TESTCASE_BUILDDIR='"/tmp/guix-build-python-pyqt-5.9.drv-0/PyQt5_gpl-5.9/QtTest"'
 -I. -I. -isystem 
/gnu/store/3lkypf5wnsnvkaidhw0pv7k3yjfh1r9g-python-3.6.3/include/python3.6m 
-isystem /gnu/store/xgpwah2hppghgc7c09jp643ddm2lfjj5-qtbase-5.11.0/include/qt5 
-isystem 
/gnu/store/xgpwah2hppghgc7c09jp643ddm2lfjj5-qtbase-5.11.0/include/qt5/QtWidgets 
-isystem 
/gnu/store/xgpwah2hppghgc7c09jp643ddm2lfjj5-qtbase-5.11.0/include/qt5/QtGui 
-isystem 
/gnu/store/xgpwah2hppghgc7c09jp643ddm2lfjj5-qtbase-5.11.0/include/qt5/QtTest 
-isystem 
/gnu/store/xgpwah2hppghgc7c09jp643ddm2lfjj5-qtbase-5.11.0/include/qt5/QtCore 
-I. -isystem 
/gnu/store/88vpd91676yna0zrix1shvqvvh4nx21a-libdrm-2.4.91/include/libdrm 
-I/gnu/store/xgpwah2hppghgc7c09jp643ddm2lfjj5-qtbase-5.11.0/lib/qt5/mkspecs/linux-g++
 -o sipQtTestQSignalSpy.o sipQtTestQSignalSpy.cpp
g++ -c -pipe -O2 -std=gnu++11 -fno-exceptions -Wall -W -D_REENTRANT -fPIC 
-DSIP_PROTECTED_IS_PUBLIC -Dprotected=public -DQT_NO_EXCEPTIONS -DQT_NO_DEBUG 
-DQT_PLUGIN -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_TESTLIB_LIB -DQT_CORE_LIB 
-DQT_TESTCASE_BUILDDIR='"/tmp/guix-build-python-pyqt-5.9.drv-0/PyQt5_gpl-5.9/QtTest"'
 -I. -I. -isystem 
/gnu/store/3lkypf5wnsnvkaidhw0pv7k3yjfh1r9g-python-3.6.3/include/python3.6m 
-isystem /gnu/store/xgpwah2hppghgc7c09jp643ddm2lfjj5-qtbase-5.11.0/include/qt5 
-isystem 
/gnu/store/xgpwah2hppghgc7c09jp643ddm2lfjj5-qtbase-5.11.0/include/qt5/QtWidgets 
-isystem 
/gnu/store/xgpwah2hppghgc7c09jp643ddm2lfjj5-qtbase-5.11.0/include/qt5/QtGui 
-isystem 
/gnu/store/xgpwah2hppghgc7c09jp643ddm2lfjj5-qtbase-5.11.0/include/qt5/QtTest 
-isystem 
/gnu/store/xgpwah2hppghgc7c09jp643ddm2lfjj5-qtbase-5.11.0/include/qt5/QtCore 
-I. -isystem 
/gnu/store/88vpd91676yna0zrix1shvqvvh4nx21a-libdrm-2.4.91/include/libdrm 
-I/gnu/store/xgpwah2hppghgc7c09jp643ddm2lfjj5-qtbase-5.11.0/lib/qt5/mkspecs/linux-g++
 -o sipQtTestQTest.o sipQtTestQTest.cpp
g++ -c -pipe -O2 -std=gnu++11 -fno-exceptions -Wall -W -D_REENTRANT -fPIC 
-DSIP_PROTECTED_IS_PUBLIC -Dprotected=public -DQT_NO_EXCEPTIONS -DQT_NO_DEBUG 
-DQT_PLUGIN -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_TESTLIB_LIB -DQT_CORE_LIB 
-DQT_TESTCASE_BUILDDIR='"/tmp/guix-build-python-pyqt-5.9.drv-0/PyQt5_gpl-5.9/QtTest"'
 -I. -I. -isystem 
/gnu/store/3lkypf5wnsnvkaidhw0pv7k3yjfh1r9g-python-3.6.3/include/python3.6m 
-isystem /gnu/store/xgpwah2hppghgc7c09jp643ddm2lfjj5-qtbase-5.11.0/include/qt5 
-isystem 
/gnu/store/xgpwah2hppghgc7c09jp643ddm2lfjj5-qtbase-5.11.0/include/qt5/QtWidgets 
-isystem 
/gnu/store/xgpwah2hppghgc7c09jp643ddm2lfjj5-qtbase-5.11.0/include/qt5/QtGui 
-isystem 
/gnu/store/xgpwah2hppghgc7c09jp643ddm2lfjj5-qtbase-5.11.0/include/qt5/QtTest 
-isystem 
/gnu/store/xgpwah2hppghgc7c09jp643ddm2lfjj5-qtbase-5.11.0/include/qt5/QtCore 
-I. -isystem 
/gnu/store/88vpd91676yna0zrix1shvqvvh4nx21a-libdrm-2.4.91/include/libdrm 
-I/gnu/store/xgpwah2hppghgc7c09jp643ddm2lfjj5-qtbase-5.11.0/lib/qt5/mkspecs/linux-g++
 -o sipQtTestQTestQTouchEventSequence.o sipQtTestQTestQTouchEventSequence.cpp
g++ -c -pipe -O2 -std=gnu++11 -fno-exceptions -Wall -W -D_REENTRANT -fPIC 
-DSIP_PROTECTED_IS_PUBLIC -Dprotected=public -DQT_NO_EXCEPTIONS -DQT_NO_DEBUG 
-DQT_PLUGIN -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_TESTLIB_LIB -DQT_CORE_LIB 
-DQT_TESTCASE_BUILDDIR='"/tmp/guix-build-python-pyqt-5.9.drv-0/PyQt5_gpl-5.9/QtTest"'
 -I. -I. -isystem 
/gnu/store/3lkypf5wnsnvkaidhw0pv7k3yjfh1r9g-python-3.6.3/include/python3.6m 
-isystem /gnu/store/xgpwah2hppghgc7c09jp643ddm2lfjj5-qtbase-5.11.0/include/qt5 
-isystem 
/gnu/store/xgpwah2hppghgc7c09jp643ddm2lfjj5-qtbase-5.11.0/include/qt5/QtWidgets 
-isystem 
/gnu/store/xgpwah2hppghgc7c09jp643ddm2lfjj5-qtbase-5.11.0/include/qt5/QtGui 
-isystem 
/gnu/store/xgpwah2hppghgc7c09jp643ddm2lfjj5-qtbase-5.11.0/include/qt5/QtTest 
-isystem 
/gnu/store/xgpwah2hppghgc7c09jp643ddm2lfjj5-qtbase-5.11.0/include/qt5/QtCore 
-I. -isystem 
/gnu/store/88vpd91676yna0zrix1shvqvvh4nx21a-libdrm-2.4.91/include/libdrm 
-I/gnu/store/xgpwah2hppghgc7c09jp643ddm2lfjj5-qtbase-5.11.0/lib/qt5/mkspecs/linux-g++
 -o sipQtTestcmodule.o sipQtTestcmodule.cpp
/tmp/guix-build-python-pyqt-5.9.drv-0/PyQt5_gpl-5.9/QtTest/sipQtTestQTest.cpp: 
In function ‘PyObject* meth_QTest_waitForEvents(PyObject*, PyObject*)’:
/tmp/guix-build-python-pyqt-5.9.drv-0/PyQt5_gpl-5.9/QtTest/sipQtTestQTest.cpp:278:14:
 error: ‘waitForEvents’ is not a member of ‘QTest’
make[1]: *** [Makefile:545: sipQtTestQTest.o] Error 1
make[1]: *** Waiting for unfinished jobs....
make[1]: Leaving directory 
'/tmp/guix-build-python-pyqt-5.9.drv-0/PyQt5_gpl-5.9/QtTest'
make: *** [Makefile:596: sub-QtTest-make_first-ordered] Error 2
phase `build' failed after 234.0 seconds
builder for `/gnu/store/066dx7j5ppr5by97f6kjv17zln22qz90-python-pyqt-5.9.drv' 
failed with exit code 1
cannot build derivation 
`/gnu/store/b35912gkxppr8xp229qqv6zq3hgm3vgl-lightgbm-2.0.12.drv': 1 
dependencies couldn't be built
guix package: error: build failed: build of 
`/gnu/store/b35912gkxppr8xp229qqv6zq3hgm3vgl-lightgbm-2.0.12.drv' failed