Failing installation on Ros due to PyQt5 issue

[tricoveri]

I'm super newbie to Linux. I am trying to install Ros Lunar on an old 32 bit computer with Lubuntu on I get this message error

`Processing catkin package: 'qt_gui_cpp'
==> Building with env: '/home/theo/ros_catkin_ws/install_isolated/env.sh'
Makefile exists, skipping explicit cmake invocation...
==> make cmake_check_build_system in '/home/theo/ros_catkin_ws/build_isolated/qt_gui_cpp'
==> make -j2 -l2 in '/home/theo/ros_catkin_ws/build_isolated/qt_gui_cpp'
[ 83%] Built target qt_gui_cpp
[ 88%] Running SIP generator for qt_gui_cpp_sip Python bindings...
Traceback (most recent call last):
  File "/home/theo/ros_catkin_ws/install_isolated/share/python_qt_binding/cmake/sip_configure.py", line 9, in <module>
    from PyQt5 import QtCore
ImportError: No module named PyQt5
src/qt_gui_cpp_sip/CMakeFiles/libqt_gui_cpp_sip.dir/build.make:89: recipe for target 'sip/qt_gui_cpp_sip/Makefile' failed
make[2]: *** [sip/qt_gui_cpp_sip/Makefile] Error 1
CMakeFiles/Makefile2:374: recipe for target 'src/qt_gui_cpp_sip/CMakeFiles/libqt_gui_cpp_sip.dir/all' failed
make[1]: *** [src/qt_gui_cpp_sip/CMakeFiles/libqt_gui_cpp_sip.dir/all] Error 2
Makefile:140: recipe for target 'all' failed
make: *** [all] Error 2
<== Failed to process package 'qt_gui_cpp': 
  Command '['/home/theo/ros_catkin_ws/install_isolated/env.sh', 'make', '-j2', '-l2']' returned non-zero exit status 2

Reproduce this error by running:
==> cd /home/theo/ros_catkin_ws/build_isolated/qt_gui_cpp && /home/theo/ros_catkin_ws/install_isolated/env.sh make -j2 -l2

`

Tried to both install PyQt5 using pip command and using alien to turn the .tar.bs into a .deb package. What directory should I search the package in? Thanks

[dirk-thomas]

I am not sure if you have seen the ROS support guidelines but we kindly ask to raise questions like this on answers.ros.org instead.

The rational for asking all kind of questions in a single place is:

• There are many more people reading questions there so your chances on getting an answer and in a timely manner are much higher.
• In the future other users will search there for similar problems and can find your question and the potential answers.
• The issue tracker in this repo is used to track bugs, feature requests, etc. But your question is not such an action item.

Therefore I will close this ticket here for now. If you have asked your question on answers.ros.org please feel free to add a link to the question to this ticket so that future readers can find the related question.