"pip install pyqt5" gives tons of errors. Why?

[glestwid]

Hi,
On Slackware instance I am running the following command:

pip install pyqt5

As a result, I get the following output with tons of errors:

Collecting pyqt5
  Using cached PyQt5-5.15.0.tar.gz (3.3 MB)
  Installing build dependencies: started
  Installing build dependencies: finished with status 'done'
  Getting requirements to build wheel: started
  Getting requirements to build wheel: finished with status 'done'
    Preparing wheel metadata: started
    Preparing wheel metadata: still running...
    Preparing wheel metadata: finished with status 'error'
    ERROR: Command errored out with exit status 1:
     command: /usr/bin/python3 /usr/lib/python3.7/site-packages/pip/_vendor/pep517/_in_process.py prepare_metadata_for_build_wheel /tmp/tmpehic3amf
         cwd: /tmp/pip-install-fh1pxns1/pyqt5
    Complete output (1321 lines):
    Querying qmake about your Qt installation...
    /usr/lib/qt5/bin/qmake -query
    This is the GPL version of PyQt 5.15.0 (licensed under the GNU General Public License) for Python 3.7.3 on linux.
    Found the license file 'pyqt-gpl.sip'.
    Checking to see if the QtCore bindings can be built...
    /usr/lib/qt5/bin/qmake QtCore.pro
    Info: creating stash file /tmp/tmp0w3foywi/cfgtest_QtCore/.qmake.stash
    make
    g++ -c -pipe -O2 -march=i586 -mtune=i686 -std=gnu++11 -Wall -W -D_REENTRANT -fPIC -DQT_NO_DEBUG -DQT_CORE_LIB -I. -I../../pip-install-fh1pxns1/pyqt5/qpy/QtCore -isystem /usr/include/qt5 -isystem /usr/include/qt5/QtCore -I. -I/usr/lib/qt5/mkspecs/linux-g++ -o cfgtest_QtCore.o ../../pip-install-fh1pxns1/pyqt5/config-tests/cfgtest_QtCore.cpp


    g++ -c -pipe -O2 -march=i586 -mtune=i686 -std=gnu++11 -Wall -W -D_REENTRANT -fPIC -DQT_NO_DEBUG -DQT_XMLPATTERNS_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -I. -isystem /usr/include/qt5 -isystem /usr/include/qt5/QtXmlPatterns -isystem /usr/include/qt5/QtNetwork -isystem /usr/include/qt5/QtCore -I. -I/usr/lib/qt5/mkspecs/linux-g++ -o cfgtest_QtXmlPatterns.o cfgtest_QtXmlPatterns.cpp
    g++ -Wl,-O1 -o QtXmlPatterns cfgtest_QtXmlPatterns.o   -lQt5XmlPatterns -lQt5Network -lQt5Core -lpthread
    /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../../i586-slackware-linux/bin/ld: warning: libicui18n.so.56, needed by /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../libQt5Core.so, not found (try using -rpath or -rpath-link)
    /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../../i586-slackware-linux/bin/ld: warning: libicuuc.so.56, needed by /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../libQt5Core.so, not found (try using -rpath or -rpath-link)
    /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../../i586-slackware-linux/bin/ld: warning: libicudata.so.56, needed by /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../libQt5Core.so, not found (try using -rpath or -rpath-link)
    /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../../i586-slackware-linux/bin/ld: /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../libQt5Core.so: undefined reference to `ucol_open_56'
    /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../../i586-slackware-linux/bin/ld: /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../libQt5Core.so: undefined reference to `u_strToLower_56'
    /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../../i586-slackware-linux/bin/ld: /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../libQt5Core.so: undefined reference to `ucnv_getStandardName_56'
    /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../../i586-slackware-linux/bin/ld: /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../libQt5Core.so: undefined reference to `ucnv_compareNames_56'
    /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../../i586-slackware-linux/bin/ld: /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../libQt5Core.so: undefined reference to `ucal_clone_56'
    /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../../i586-slackware-linux/bin/ld: /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../libQt5Core.so: undefined reference to `ucnv_getAlias_56'
    /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../../i586-slackware-linux/bin/ld: /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../libQt5Core.so: undefined reference to `uenum_next_56'
    /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../../i586-slackware-linux/bin/ld: /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../libQt5Core.so: undefined reference to `ucal_open_56'
    /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../../i586-slackware-linux/bin/ld: /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../libQt5Core.so: undefined reference to `ucol_setAttribute_56'
    /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../../i586-slackware-linux/bin/ld: /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../libQt5Core.so: undefined reference to `u_strToUpper_56'
    /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../../i586-slackware-linux/bin/ld: /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../libQt5Core.so: undefined reference to `ucnv_setSubstChars_56'
    /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../../i586-slackware-linux/bin/ld: /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../libQt5Core.so: undefined reference to `ucal_getTimeZoneDisplayName_56'
    /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../../i586-slackware-linux/bin/ld: /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../libQt5Core.so: undefined reference to `ucal_openCountryTimeZones_56'
    /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../../i586-slackware-linux/bin/ld: /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../libQt5Core.so: undefined reference to `ucnv_fromUnicode_56'
    /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../../i586-slackware-linux/bin/ld: /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../libQt5Core.so: undefined reference to `ucnv_open_56'
    /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../../i586-slackware-linux/bin/ld: /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../libQt5Core.so: undefined reference to `ucal_openTimeZones_56'
    /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../../i586-slackware-linux/bin/ld: /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../libQt5Core.so: undefined reference to `ucnv_countAliases_56'
    /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../../i586-slackware-linux/bin/ld: /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../libQt5Core.so: undefined reference to `u_errorName_56'
    /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../../i586-slackware-linux/bin/ld: /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../libQt5Core.so: undefined reference to `ucal_inDaylightTime_56'
    /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../../i586-slackware-linux/bin/ld: /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../libQt5Core.so: undefined reference to `uenum_close_56'
    /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../../i586-slackware-linux/bin/ld: /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../libQt5Core.so: undefined reference to `ucnv_getAvailableName_56'
    /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../../i586-slackware-linux/bin/ld: /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../libQt5Core.so: undefined reference to `ucal_close_56'
    /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../../i586-slackware-linux/bin/ld: /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../libQt5Core.so: undefined reference to `ucal_openTimeZoneIDEnumeration_56'
    /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../../i586-slackware-linux/bin/ld: /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../libQt5Core.so: undefined reference to `ucnv_getDefaultName_56'
    /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../../i586-slackware-linux/bin/ld: /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../libQt5Core.so: undefined reference to `ucal_getDSTSavings_56'
    /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../../i586-slackware-linux/bin/ld: /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../libQt5Core.so: undefined reference to `ucal_getDefaultTimeZone_56'
    /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../../i586-slackware-linux/bin/ld: /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../libQt5Core.so: undefined reference to `ucnv_toUnicode_56'
    /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../../i586-slackware-linux/bin/ld: /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../libQt5Core.so: undefined reference to `ucal_setMillis_56'
    /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../../i586-slackware-linux/bin/ld: /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../libQt5Core.so: undefined reference to `ucol_strcoll_56'
    /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../../i586-slackware-linux/bin/ld: /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../libQt5Core.so: undefined reference to `ucnv_close_56'
    /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../../i586-slackware-linux/bin/ld: /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../libQt5Core.so: undefined reference to `ucol_close_56'
    /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../../i586-slackware-linux/bin/ld: /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../libQt5Core.so: undefined reference to `ucol_getSortKey_56'
    /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../../i586-slackware-linux/bin/ld: /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../libQt5Core.so: undefined reference to `ucnv_countAvailable_56'
    /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../../i586-slackware-linux/bin/ld: /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../libQt5Core.so: undefined reference to `ucnv_getMaxCharSize_56'
    /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../../i586-slackware-linux/bin/ld: /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../libQt5Core.so: undefined reference to `ucal_get_56'
    collect2: error: ld returned 1 exit status
    Makefile:214: recipe for target 'QtXmlPatterns' failed
    make: *** [QtXmlPatterns] Error 1
    Checking to see if the dbus-python support should be built...
    The dbus-python package does not seem to be installed.
    These bindings will be built: Qt, pylupdate, pyrcc.
    Generating the Qt bindings...
    Generating the pylupdate bindings...
    _in_process.py: Q_PID is undefined
    
    ----------------------------------------
ERROR: Command errored out with exit status 1: /usr/bin/python3 /usr/lib/python3.7/site-packages/pip/_vendor/pep517/_in_process.py prepare_metadata_for_build_wheel /tmp/tmpehic3amf Check the logs for full command output.

What am I doing wrong? How shoul I install the corrsponding module for Python 3.7?

[JKSH]

Him, and welcome!

@glestwid said in "pip install pyqt5" gives tons of errors. Why?:

I get the following output with tons of errors:

When compiling any software, just focus on the first error. Once you fix that, many (or all) of the others will disappear.

The line that contains your first error is:

/usr/lib/gcc/i586-slackware-linux/5.3.0/../../../../i586-slackware-linux/bin/ld: warning: libicui18n.so.56, needed by /usr/lib/gcc/i586-slackware-linux/5.3.0/../../../libQt5Core.so, not found (try using -rpath or -rpath-link)

According to that message, you must install ICU 56.

[glestwid]

@JKSH said in "pip install pyqt5" gives tons of errors. Why?:

libicui18n

Ok, will libicui18n67-67.1-3-omv4002.i686.rpm work as an up-to-date substitution for 56? Should I do anything else to make 67 working as 56?

[JKSH]

@glestwid said in "pip install pyqt5" gives tons of errors. Why?:

Ok, will libicui18n67-67.1-3-omv4002.i686.rpm work as an up-to-date substitution for 56? Should I do anything else to make 67 working as 56?

Unfortunately, I don't think ICU 67 is not backwards-compatible with ICU 56.

It looks like Slackware 14.2 (the latest stable release) contains ICU 56 but Slackware-Current (the development release) contains ICU 67.

[glestwid]

Ok, I found missed sources for libicui, built abd deployed the lib , and now I'm getting another error while calling PIP:

pip install pyqt5
Collecting pyqt5
  Using cached PyQt5-5.15.0.tar.gz (3.3 MB)
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
    Preparing wheel metadata ... error
    ERROR: Command errored out with exit status 1:
     command: /usr/bin/python3 /usr/lib/python3.7/site-packages/pip/_vendor/pep517/_in_process.py prepare_metadata_for_build_wheel /tmp/tmpngmrw6gt
         cwd: /tmp/pip-install-kl7346yk/pyqt5
    Complete output (31 lines):
    Traceback (most recent call last):
      File "/usr/lib/python3.7/site-packages/pip/_vendor/pep517/_in_process.py", line 126, in prepare_metadata_for_build_wheel
        hook = backend.prepare_metadata_for_build_wheel
    AttributeError: module 'sipbuild.api' has no attribute 'prepare_metadata_for_build_wheel'
    
    During handling of the above exception, another exception occurred:
    
    Traceback (most recent call last):
      File "/usr/lib/python3.7/site-packages/pip/_vendor/pep517/_in_process.py", line 280, in <module>
        main()
      File "/usr/lib/python3.7/site-packages/pip/_vendor/pep517/_in_process.py", line 263, in main
        json_out['return_val'] = hook(**hook_input['kwargs'])
      File "/usr/lib/python3.7/site-packages/pip/_vendor/pep517/_in_process.py", line 131, in prepare_metadata_for_build_wheel
        config_settings)
      File "/usr/lib/python3.7/site-packages/pip/_vendor/pep517/_in_process.py", line 159, in _get_wheel_metadata_from_wheel
        whl_basename = backend.build_wheel(metadata_directory, config_settings)
      File "/tmp/pip-build-env-bi1ma0qt/overlay/lib/python3.7/site-packages/sipbuild/api.py", line 51, in build_wheel
        project = AbstractProject.bootstrap('pep517')
      File "/tmp/pip-build-env-bi1ma0qt/overlay/lib/python3.7/site-packages/sipbuild/abstract_project.py", line 82, in bootstrap
        project.setup(pyproject, tool, tool_description)
      File "/tmp/pip-build-env-bi1ma0qt/overlay/lib/python3.7/site-packages/sipbuild/project.py", line 479, in setup
        self.apply_user_defaults(tool)
      File "project.py", line 62, in apply_user_defaults
        super().apply_user_defaults(tool)
      File "/tmp/pip-build-env-bi1ma0qt/overlay/lib/python3.7/site-packages/pyqtbuild/project.py", line 89, in apply_user_defaults
        super().apply_user_defaults(tool)
      File "/tmp/pip-build-env-bi1ma0qt/overlay/lib/python3.7/site-packages/sipbuild/project.py", line 225, in apply_user_defaults
        self.builder.apply_user_defaults(tool)
      File "/tmp/pip-build-env-bi1ma0qt/overlay/lib/python3.7/site-packages/pyqtbuild/builder.py", line 69, in apply_user_defaults
        "specify a working qmake or add it to PATH")
    sipbuild.pyproject.PyProjectOptionException
    ----------------------------------------
ERROR: Command errored out with exit status 1: /usr/bin/python3 /usr/lib/python3.7/site-packages/pip/_vendor/pep517/_in_process.py prepare_metadata_for_build_wheel /tmp/tmpngmrw6gt Check the logs for full command output.

What should I do now to have these issues fixed?

[JKSH]

@glestwid Your first error is:

AttributeError: module 'sipbuild.api' has no attribute 'prepare_metadata_for_build_wheel'

Google this error message.

[HeatfanJohn]

@glestwid said in "pip install pyqt5" gives tons of errors. Why?:

Ok, I found missed sources for libicui, built abd deployed the lib , and now I'm getting another error while calling PIP:

pip install pyqt5
Collecting pyqt5
  Using cached PyQt5-5.15.0.tar.gz (3.3 MB)
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
    Preparing wheel metadata ... error
    ERROR: Command errored out with exit status 1:
     command: /usr/bin/python3 /usr/lib/python3.7/site-packages/pip/_vendor/pep517/_in_process.py prepare_metadata_for_build_wheel /tmp/tmpngmrw6gt
         cwd: /tmp/pip-install-kl7346yk/pyqt5
    Complete output (31 lines):
    Traceback (most recent call last):
      File "/usr/lib/python3.7/site-packages/pip/_vendor/pep517/_in_process.py", line 126, in prepare_metadata_for_build_wheel
        hook = backend.prepare_metadata_for_build_wheel
    AttributeError: module 'sipbuild.api' has no attribute 'prepare_metadata_for_build_wheel'
    
    During handling of the above exception, another exception occurred:
    
    Traceback (most recent call last):
      File "/usr/lib/python3.7/site-packages/pip/_vendor/pep517/_in_process.py", line 280, in <module>
        main()
      File "/usr/lib/python3.7/site-packages/pip/_vendor/pep517/_in_process.py", line 263, in main
        json_out['return_val'] = hook(**hook_input['kwargs'])
      File "/usr/lib/python3.7/site-packages/pip/_vendor/pep517/_in_process.py", line 131, in prepare_metadata_for_build_wheel
        config_settings)
      File "/usr/lib/python3.7/site-packages/pip/_vendor/pep517/_in_process.py", line 159, in _get_wheel_metadata_from_wheel
        whl_basename = backend.build_wheel(metadata_directory, config_settings)
      File "/tmp/pip-build-env-bi1ma0qt/overlay/lib/python3.7/site-packages/sipbuild/api.py", line 51, in build_wheel
        project = AbstractProject.bootstrap('pep517')
      File "/tmp/pip-build-env-bi1ma0qt/overlay/lib/python3.7/site-packages/sipbuild/abstract_project.py", line 82, in bootstrap
        project.setup(pyproject, tool, tool_description)
      File "/tmp/pip-build-env-bi1ma0qt/overlay/lib/python3.7/site-packages/sipbuild/project.py", line 479, in setup
        self.apply_user_defaults(tool)
      File "project.py", line 62, in apply_user_defaults
        super().apply_user_defaults(tool)
      File "/tmp/pip-build-env-bi1ma0qt/overlay/lib/python3.7/site-packages/pyqtbuild/project.py", line 89, in apply_user_defaults
        super().apply_user_defaults(tool)
      File "/tmp/pip-build-env-bi1ma0qt/overlay/lib/python3.7/site-packages/sipbuild/project.py", line 225, in apply_user_defaults
        self.builder.apply_user_defaults(tool)
      File "/tmp/pip-build-env-bi1ma0qt/overlay/lib/python3.7/site-packages/pyqtbuild/builder.py", line 69, in apply_user_defaults
        "specify a working qmake or add it to PATH")
    sipbuild.pyproject.PyProjectOptionException
    ----------------------------------------
ERROR: Command errored out with exit status 1: /usr/bin/python3 /usr/lib/python3.7/site-packages/pip/_vendor/pep517/_in_process.py prepare_metadata_for_build_wheel /tmp/tmpngmrw6gt Check the logs for full command output.

What should I do now to have these issues fixed?

I fixed the issue "specify a working qmake or add it to PATH" by installing qt on my 64-Bit Raspberry Pi OS system using sudo apt-get install qt5-default. qmake wasn't previously on my PATH as I didn't have QT5 installed.

[Romi11]

the same problem I found any solution Python 3.7