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Tried to install PyQt5-tools via pip, didn't work [duplicate]

A program I am trying to install requires the installation of PyQt5 5.15.0 , which gives me this error. The odd thing is that the installation works fine for the latest version of PyQt5 (5.15.2), but this program requires 5.15.0 specifically.
Command Output:
Collecting PyQt5==5.15.0
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: 'c:\users\mshal\appdata\local\programs\python\python39\python.exe' 'C:\Users\mshal\AppData\Roaming\Python\Python39\site-packages\pip\_vendor\pep517\_in_process.py' prepare_metadata_for_build_wheel 'C:\Users\mshal\AppData\Local\Temp\tmp41s11ev6'
cwd: C:\Users\mshal\AppData\Local\Temp\pip-install-sfw90hvc\pyqt5_e2cc46859b554da7b84798abae5378ba
Complete output (31 lines):
Traceback (most recent call last):
File "C:\Users\mshal\AppData\Roaming\Python\Python39\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 "C:\Users\mshal\AppData\Roaming\Python\Python39\site-packages\pip\_vendor\pep517\_in_process.py", line 280, in <module>
main()
File "C:\Users\mshal\AppData\Roaming\Python\Python39\site-packages\pip\_vendor\pep517\_in_process.py", line 263, in main
json_out['return_val'] = hook(**hook_input['kwargs'])
File "C:\Users\mshal\AppData\Roaming\Python\Python39\site-packages\pip\_vendor\pep517\_in_process.py", line 130, in prepare_metadata_for_build_wheel
return _get_wheel_metadata_from_wheel(backend, metadata_directory,
File "C:\Users\mshal\AppData\Roaming\Python\Python39\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 "C:\Users\mshal\AppData\Local\Temp\pip-build-env-nnx_yu09\overlay\Lib\site-packages\sipbuild\api.py", line 51, in build_wheel
project = AbstractProject.bootstrap('pep517')
File "C:\Users\mshal\AppData\Local\Temp\pip-build-env-nnx_yu09\overlay\Lib\site-packages\sipbuild\abstract_project.py", line 83, in bootstrap
project.setup(pyproject, tool, tool_description)
File "C:\Users\mshal\AppData\Local\Temp\pip-build-env-nnx_yu09\overlay\Lib\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 "C:\Users\mshal\AppData\Local\Temp\pip-build-env-nnx_yu09\overlay\Lib\site-packages\pyqtbuild\project.py", line 79, in apply_user_defaults
super().apply_user_defaults(tool)
File "C:\Users\mshal\AppData\Local\Temp\pip-build-env-nnx_yu09\overlay\Lib\site-packages\sipbuild\project.py", line 225, in apply_user_defaults
self.builder.apply_user_defaults(tool)
File "C:\Users\mshal\AppData\Local\Temp\pip-build-env-nnx_yu09\overlay\Lib\site-packages\pyqtbuild\builder.py", line 66, in apply_user_defaults
raise PyProjectOptionException('qmake',
sipbuild.pyproject.PyProjectOptionException
----------------------------------------
ERROR: Command errored out with exit status 1: 'c:\users\mshal\appdata\local\programs\python\python39\python.exe' 'C:\Users\mshal\AppData\Roaming\Python\Python39\site-packages\pip\_vendor\pep517\_in_process.py' prepare_metadata_for_build_wheel 'C:\Users\mshal\AppData\Local\Temp\tmp41s11ev6' Check the logs for full command output.
I am on the latest version of pip. Any ideas on the root cause of this issue?

What helped me is upgrading pip from 20.2.3 to the latest one (in my case 21.1.1)

For Mac/Homebrew users.
The answer by #the-x is leading in the right direction. On a Mac with QT5 installed via Homebrew the qmake binary just needs to be added to the path. This can be achieved through
export PATH="/opt/homebrew/opt/qt5/bin:$PATH"
(of course depending on where the homebrew files are installed)

Running on arm with python3.6 (ubuntu18 on nvidia Xavier):
sudo apt install qt5-default

For MacOS users.
I am on Apple M1 silicon using Python 3.9.8. What worked for me was #Apaul's comment in the original question section. Install pyqt5-sip prior to pyqt5.
I also have an Intel Mac and on that machine, I do not need to do this.

Checking the binaries that PyQt5 provides in pypi for version 5.15.0 I see that it does not provide the binaries for python3.9 in windows, so pip is trying to compile using the source code which is complicated and can generate several dependency problems (for example you must have Qt 5.15 installed, etc). So my recommendation is to install a more updated version of PyQt5, for example 5.15.2 since if it provides the binaries for python3.9 on windows, in addition to being a wrapper of an LTS version of Qt then it will have solved several bugs.
python -m pip install PyQt5==5.15.2
Another solution is to use python3.8 instead of python3.9 so that you can install pyqt5 5.15.0 from pypi without problems.

Upgrading your pip enables you to install PyQt5. Personally, I had the same issue while installing PyQt6 and I upgraded my pip, and everything installed perfectly. I think both python and pip versions play an important role in installing PyQt so make sure you have later versions.
This is the command I used in Linux:
pip install --upgrade pip

Combining several answers on this question: On an Apple M1 Pro Macbook with macOS Ventura 13.0.1, with Homebrew 3.6.17 and python 3.11.0 the following commands fixed it for me (no sudo):
brew install qt5
export PATH="/opt/homebrew/opt/qt5/bin:$PATH"
python3 -m ensurepip --default-pip
pip3 install pyqt5-sip
pip3 install pyqt5 --config-settings --confirm-license= --verbose
That last step calls qmake to compile all of Qt on your M1 and takes many minutes to complete, be patient and let it finish.

Since qt5-default was not available, I installed qt5-default's dependencies
sudo apt-get install qtbase5-dev qtchooser qt5-qmake qtbase5-dev-tools
after that I installed pyqt5 via apt-get first and afterwards via pip
sudo apt-get install pyqt5-dev
pip install pyqt5
now wheel seems to work
side-note:
I am not sure if sudo apt-get install pyqt5-dev is even necessary

The error message thrown here is misleading - it's not an issue with a sipbuild.api attribute. Indeed, in this case program qmake is missing, see last line of the Python traceback. Have a look if it's installed on your system and add it to your PATH variable. Otherwise, install it. On Linux this would be done with
sudo apt-get install qt5-qmake

I had this problem on my M1 Mac using Python 3.9.12 when I was trying to install a library: pip install pixellib.
The first thing I did was: pip install pixellib --verbose to see the whole log, and there I noticed that PyQt5 was waiting for an input. So then I found someone else with that issue, and used pip install pyqt5 --config-settings --confirm-license= --verbose which took some time to compile, but worked!

I could not get any of the above solutions to work but I managed to get it working using python3.9, PyQt5=5.15.2, pip=22.0.2 and sip=6.5.0 by using sudo apt-get install PyQt5. If you need it in a virtual environment, you can manually copy the PyQt5 folder from your default /usr/lib/python3/dist-packages to the site-packages folder in your virtual environment.

To all those that are struggling with Apple M1 installation, here is a working solution, specifically addressing the problem of installing the pixellib library that depends on PyQt5 but you can apply it equally to other libs:
PyQt5 is not supported on Apple M1, it needs qt6: https://www.reddit.com/r/learnpython/comments/o4w1ut/comment/h2jele3/?utm_source=share&utm_medium=web2x&context=3 , https://www.qt.io/product/qt6
this means you need to install PyQt6: python3 -m pip install PyQt6
go to the lib you need, in my case pixellib: https://pypi.org/project/pixellib/#files and
download the wheel file
get the wheel tool: pip install wheel
unpack the wheel wheel unpack pixellib-0.7.1-py3-none-any.whl
Change its dependency of PyQt5 to PyQt6
edit pixellib-0.7.1/pixellib-0.7.1.dist-info/METADATA
pyQt5 => pyQt6
pack it back wheel pack pixellib-0.7.1
install it: pip install pixellib-0.7.1-py3-none-any.whl
test in python: `
# should work
import pixellib
P.S. thanks to Terra and ChaOS for supporting work on the project underlying this report.

I finally managed to make it works on M1/M2 Macbook Pro.
None of these answers worked for me, so I looked at brew to install pyqt.
The following command will install pyqt5 via brew:
brew install pyqt#5
Then it just worked.

This can be resolved by switching to an environment with Python >= 3.8

Pip returning syntax error when installing package in Python 2.7

I am trying to install a Python package in Wine, but it keeps giving me internal syntax errors. When I tried to install pyinstaller, it gave me this:
C:\>pip install pyinstaller
DEPRECATION: Python 2.7 reached the end of its life on January 1st, 2020. Please upgrade your Python as Python 2.7 is no longer maintained. pip 21.0 will drop support for Python 2.7 in January 2021. More details about Python 2 support in pip can be found at https://pip.pypa.io/en/latest/development/release-process/#python-2-support pip 21.0 will remove support for this functionality.
Collecting pyinstaller
Using cached pyinstaller-4.1.tar.gz (3.5 MB)
Installing build dependencies ... done
Getting requirements to build wheel ... error
ERROR: Command errored out with exit status 1:
command: 'c:\Python27\python.exe' 'c:\Python27\lib\site-packages\pip\_vendor\pep517\_in_process.py' get_requires_for_build_wheel 'c:\users\jackpy\temp\tmpo_ofkx'
cwd: c:\users\jackpy\temp\pip-install-tjtlkl\pyinstaller
Complete output (19 lines):
Traceback (most recent call last):
File "c:\Python27\lib\site-packages\pip\_vendor\pep517\_in_process.py", line 280, in <module>
main()
File "c:\Python27\lib\site-packages\pip\_vendor\pep517\_in_process.py", line 263, in main
json_out['return_val'] = hook(**hook_input['kwargs'])
File "c:\Python27\lib\site-packages\pip\_vendor\pep517\_in_process.py", line 114, in get_requires_for_build_wheel
return hook(config_settings)
File "c:\users\jackpy\temp\pip-build-env-wvrvge\overlay\Lib\site-packages\setuptools\build_meta.py", line 146, in get_requires_for_build_wheel
return self._get_build_requires(config_settings, requirements=['wheel'])
File "c:\users\jackpy\temp\pip-build-env-wvrvge\overlay\Lib\site-packages\setuptools\build_meta.py", line 127, in _get_build_requires
self.run_setup()
File "c:\users\jackpy\temp\pip-build-env-wvrvge\overlay\Lib\site-packages\setuptools\build_meta.py", line 243, in run_setup
self).run_setup(setup_script=setup_script)
File "c:\users\jackpy\temp\pip-build-env-wvrvge\overlay\Lib\site-packages\setuptools\build_meta.py", line 142, in run_setup
exec(compile(code, __file__, 'exec'), locals())
File "setup.py", line 63
file=sys.stderr)
^
SyntaxError: invalid syntax
----------------------------------------
ERROR: Command errored out with exit status 1: 'c:\Python27\python.exe' 'c:\Python27\lib\site-packages\pip\_vendor\pep517\_in_process.py' get_requires_for_build_wheel 'c:\users\jackpy\temp\tmpo_ofkx' Check the logs for full command output.
I have tried uninstalling and reinstalling using get-pip.py, and it's always the same error.
I am using Python 2.7.18 and Wine 4.0. Can anyone tell me how to fix this?

As far as I can see from the pyinstaller website they have dropped the support of python2.7 from version 4.0, and you are trying to install a version 4.1.0 (https://pyinstaller.readthedocs.io/en/stable/)
Finally, this version drops support for Python 2.7, which is end-of-life since January 2020.. The minimum required version is now Python 3.6.
Also, I do not see any other available version on PyPI, so the only option you have is to upgrade your python to at least version 3.6.
Best of luck!

If Python 2.7 absolutely needs to be used, using the last supported version should still work. Please try
pip install pyinstaller==3.6
See also: How do you downgrade pyinstaller using pip?

Get updated version of python. Your version is way too old
Recently I have been gone through that issue, not like yours but kind of. I deleted every single file related to pyinstaller. And gave it a fresh start

cannot install fairseq using Anaconda?

I install the package fairseq but it raises some errors as bellow. I'm using Anaconda Prompt to install on the base environment. Could anyone help to fix this problem?? Thanks so much!
(base) PS C:\WINDOWS\system32> pip install fairseq --user
Collecting fairseq
Using cached fairseq-0.10.1.tar.gz (924 kB)
Installing build dependencies ... done
Getting requirements to build wheel ... error
ERROR: Command errored out with exit status 1:
command: 'C:\Users\johnn\Anaconda3\python.exe' 'C:\Users\johnn\Anaconda3\lib\site-packages\pip\_vendor\pep517\_in_process.py' get_requires_for_build_wheel 'C:\Users\johnn\AppData\Local\Temp\tmpr4o1lvo4'
cwd: C:\Users\johnn\AppData\Local\Temp\pip-install-5efwp00y\fairseq_8f7b526c143c4da7b9cf30edcc3c3ab0
Complete output (31 lines):
Traceback (most recent call last):
File "setup.py", line 214, in <module>
do_setup(package_data)
File "setup.py", line 136, in do_setup
setup(
File "C:\Users\johnn\AppData\Local\Temp\pip-build-env-8dy_kf5o\overlay\Lib\site-packages\setuptools\__init__.py", line 152, in setup
_install_setup_requires(attrs)
File "C:\Users\johnn\AppData\Local\Temp\pip-build-env-8dy_kf5o\overlay\Lib\site-packages\setuptools\__init__.py", line 147, in _install_setup_requires
dist.fetch_build_eggs(dist.setup_requires)
File "C:\Users\johnn\AppData\Local\Temp\pip-build-env-8dy_kf5o\overlay\Lib\site-packages\setuptools\build_meta.py", line 60, in fetch_build_eggs
raise SetupRequirementsError(specifier_list)
setuptools.build_meta.SetupRequirementsError: ['cython', 'numpy', 'setuptools>=18.0']
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "C:\Users\johnn\Anaconda3\lib\site-packages\pip\_vendor\pep517\_in_process.py", line 280, in <module>
main()
File "C:\Users\johnn\Anaconda3\lib\site-packages\pip\_vendor\pep517\_in_process.py", line 263, in main
json_out['return_val'] = hook(**hook_input['kwargs'])
File "C:\Users\johnn\Anaconda3\lib\site-packages\pip\_vendor\pep517\_in_process.py", line 114, in get_requires_for_build_wheel
return hook(config_settings)
File "C:\Users\johnn\AppData\Local\Temp\pip-build-env-8dy_kf5o\overlay\Lib\site-packages\setuptools\build_meta.py", line 149, in get_requires_for_build_wheel
return self._get_build_requires(
File "C:\Users\johnn\AppData\Local\Temp\pip-build-env-8dy_kf5o\overlay\Lib\site-packages\setuptools\build_meta.py", line 130, in _get_build_requires
self.run_setup()
File "C:\Users\johnn\AppData\Local\Temp\pip-build-env-8dy_kf5o\overlay\Lib\site-packages\setuptools\build_meta.py", line 145, in run_setup
exec(compile(code, __file__, 'exec'), locals())
File "setup.py", line 217, in <module>
os.unlink(fairseq_examples)
PermissionError: [WinError 5] Access is denied: 'fairseq\\examples'
----------------------------------------
ERROR: Command errored out with exit status 1: 'C:\Users\johnn\Anaconda3\python.exe' 'C:\Users\johnn\Anaconda3\lib\site-packages\pip\_vendor\pep517\_in_process.py' get_requires_

my solution is below
git clone https://github.com/pytorch/fairseq
cd fairseq
activate env(that you created existed)
pip install --editable .

TL; DR: conda install fairseq --channel conda-forge
Conda Channels
Unfortunately, fairseq is not in the list of default conda channel. However, you can use
conda install fairseq --channel conda-forge
to install fairseq. The option --channel (-c for short) specifies the channel (it uses conda-forge in here) for conda to retrieve packages. You get a more detailed description in Conda channels | Conda Dos.
A similar example is when you follow the offical guide to install PyTorch with conda, it gives
conda install pytorch torchvision torchaudio cudatoolkit=11.3 -c pytorch
which means you install these 3 packages through channel pytorch.
About fairseq
If you simply would like to use fairseq rather than doing some specialized modifications (e.g. create an experimental neural network structure for research), conda install is enough. Otherwise, it is recommended to install as #yeonsook kwak said. The option --editable (-e for short) means you can directly do editions in this pulled repository.
conda install v.s. pip install
One advantage of doing conda install (instead of pip install) is that you can share the packages through all conda environments, which may save disk spaces. However, if you would like to install the same package but with different versions in different environments, you should use pip install.
A possible drawback for conda install is the package from external channels may not be the lastest comparing to those from PyPI/offical source.

AttributeError: module 'sipbuild.api' has no attribute 'prepare_metadata_for_build_wheel' for PyQt5 5.15.0

A program I am trying to install requires the installation of PyQt5 5.15.0 , which gives me this error. The odd thing is that the installation works fine for the latest version of PyQt5 (5.15.2), but this program requires 5.15.0 specifically.
Command Output:
Collecting PyQt5==5.15.0
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: 'c:\users\mshal\appdata\local\programs\python\python39\python.exe' 'C:\Users\mshal\AppData\Roaming\Python\Python39\site-packages\pip\_vendor\pep517\_in_process.py' prepare_metadata_for_build_wheel 'C:\Users\mshal\AppData\Local\Temp\tmp41s11ev6'
cwd: C:\Users\mshal\AppData\Local\Temp\pip-install-sfw90hvc\pyqt5_e2cc46859b554da7b84798abae5378ba
Complete output (31 lines):
Traceback (most recent call last):
File "C:\Users\mshal\AppData\Roaming\Python\Python39\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 "C:\Users\mshal\AppData\Roaming\Python\Python39\site-packages\pip\_vendor\pep517\_in_process.py", line 280, in <module>
main()
File "C:\Users\mshal\AppData\Roaming\Python\Python39\site-packages\pip\_vendor\pep517\_in_process.py", line 263, in main
json_out['return_val'] = hook(**hook_input['kwargs'])
File "C:\Users\mshal\AppData\Roaming\Python\Python39\site-packages\pip\_vendor\pep517\_in_process.py", line 130, in prepare_metadata_for_build_wheel
return _get_wheel_metadata_from_wheel(backend, metadata_directory,
File "C:\Users\mshal\AppData\Roaming\Python\Python39\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 "C:\Users\mshal\AppData\Local\Temp\pip-build-env-nnx_yu09\overlay\Lib\site-packages\sipbuild\api.py", line 51, in build_wheel
project = AbstractProject.bootstrap('pep517')
File "C:\Users\mshal\AppData\Local\Temp\pip-build-env-nnx_yu09\overlay\Lib\site-packages\sipbuild\abstract_project.py", line 83, in bootstrap
project.setup(pyproject, tool, tool_description)
File "C:\Users\mshal\AppData\Local\Temp\pip-build-env-nnx_yu09\overlay\Lib\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 "C:\Users\mshal\AppData\Local\Temp\pip-build-env-nnx_yu09\overlay\Lib\site-packages\pyqtbuild\project.py", line 79, in apply_user_defaults
super().apply_user_defaults(tool)
File "C:\Users\mshal\AppData\Local\Temp\pip-build-env-nnx_yu09\overlay\Lib\site-packages\sipbuild\project.py", line 225, in apply_user_defaults
self.builder.apply_user_defaults(tool)
File "C:\Users\mshal\AppData\Local\Temp\pip-build-env-nnx_yu09\overlay\Lib\site-packages\pyqtbuild\builder.py", line 66, in apply_user_defaults
raise PyProjectOptionException('qmake',
sipbuild.pyproject.PyProjectOptionException
----------------------------------------
ERROR: Command errored out with exit status 1: 'c:\users\mshal\appdata\local\programs\python\python39\python.exe' 'C:\Users\mshal\AppData\Roaming\Python\Python39\site-packages\pip\_vendor\pep517\_in_process.py' prepare_metadata_for_build_wheel 'C:\Users\mshal\AppData\Local\Temp\tmp41s11ev6' Check the logs for full command output.
I am on the latest version of pip. Any ideas on the root cause of this issue?

What helped me is upgrading pip from 20.2.3 to the latest one (in my case 21.1.1)

For Mac/Homebrew users.
The answer by #the-x is leading in the right direction. On a Mac with QT5 installed via Homebrew the qmake binary just needs to be added to the path. This can be achieved through
export PATH="/opt/homebrew/opt/qt5/bin:$PATH"
(of course depending on where the homebrew files are installed)

Running on arm with python3.6 (ubuntu18 on nvidia Xavier):
sudo apt install qt5-default

For MacOS users.
I am on Apple M1 silicon using Python 3.9.8. What worked for me was #Apaul's comment in the original question section. Install pyqt5-sip prior to pyqt5.
I also have an Intel Mac and on that machine, I do not need to do this.

Checking the binaries that PyQt5 provides in pypi for version 5.15.0 I see that it does not provide the binaries for python3.9 in windows, so pip is trying to compile using the source code which is complicated and can generate several dependency problems (for example you must have Qt 5.15 installed, etc). So my recommendation is to install a more updated version of PyQt5, for example 5.15.2 since if it provides the binaries for python3.9 on windows, in addition to being a wrapper of an LTS version of Qt then it will have solved several bugs.
python -m pip install PyQt5==5.15.2
Another solution is to use python3.8 instead of python3.9 so that you can install pyqt5 5.15.0 from pypi without problems.

Upgrading your pip enables you to install PyQt5. Personally, I had the same issue while installing PyQt6 and I upgraded my pip, and everything installed perfectly. I think both python and pip versions play an important role in installing PyQt so make sure you have later versions.
This is the command I used in Linux:
pip install --upgrade pip

Combining several answers on this question: On an Apple M1 Pro Macbook with macOS Ventura 13.0.1, with Homebrew 3.6.17 and python 3.11.0 the following commands fixed it for me (no sudo):
brew install qt5
export PATH="/opt/homebrew/opt/qt5/bin:$PATH"
python3 -m ensurepip --default-pip
pip3 install pyqt5-sip
pip3 install pyqt5 --config-settings --confirm-license= --verbose
That last step calls qmake to compile all of Qt on your M1 and takes many minutes to complete, be patient and let it finish.

Since qt5-default was not available, I installed qt5-default's dependencies
sudo apt-get install qtbase5-dev qtchooser qt5-qmake qtbase5-dev-tools
after that I installed pyqt5 via apt-get first and afterwards via pip
sudo apt-get install pyqt5-dev
pip install pyqt5
now wheel seems to work
side-note:
I am not sure if sudo apt-get install pyqt5-dev is even necessary

The error message thrown here is misleading - it's not an issue with a sipbuild.api attribute. Indeed, in this case program qmake is missing, see last line of the Python traceback. Have a look if it's installed on your system and add it to your PATH variable. Otherwise, install it. On Linux this would be done with
sudo apt-get install qt5-qmake

I had this problem on my M1 Mac using Python 3.9.12 when I was trying to install a library: pip install pixellib.
The first thing I did was: pip install pixellib --verbose to see the whole log, and there I noticed that PyQt5 was waiting for an input. So then I found someone else with that issue, and used pip install pyqt5 --config-settings --confirm-license= --verbose which took some time to compile, but worked!

I could not get any of the above solutions to work but I managed to get it working using python3.9, PyQt5=5.15.2, pip=22.0.2 and sip=6.5.0 by using sudo apt-get install PyQt5. If you need it in a virtual environment, you can manually copy the PyQt5 folder from your default /usr/lib/python3/dist-packages to the site-packages folder in your virtual environment.

To all those that are struggling with Apple M1 installation, here is a working solution, specifically addressing the problem of installing the pixellib library that depends on PyQt5 but you can apply it equally to other libs:
PyQt5 is not supported on Apple M1, it needs qt6: https://www.reddit.com/r/learnpython/comments/o4w1ut/comment/h2jele3/?utm_source=share&utm_medium=web2x&context=3 , https://www.qt.io/product/qt6
this means you need to install PyQt6: python3 -m pip install PyQt6
go to the lib you need, in my case pixellib: https://pypi.org/project/pixellib/#files and
download the wheel file
get the wheel tool: pip install wheel
unpack the wheel wheel unpack pixellib-0.7.1-py3-none-any.whl
Change its dependency of PyQt5 to PyQt6
edit pixellib-0.7.1/pixellib-0.7.1.dist-info/METADATA
pyQt5 => pyQt6
pack it back wheel pack pixellib-0.7.1
install it: pip install pixellib-0.7.1-py3-none-any.whl
test in python: `
# should work
import pixellib
P.S. thanks to Terra and ChaOS for supporting work on the project underlying this report.

I finally managed to make it works on M1/M2 Macbook Pro.
None of these answers worked for me, so I looked at brew to install pyqt.
The following command will install pyqt5 via brew:
brew install pyqt#5
Then it just worked.

This can be resolved by switching to an environment with Python >= 3.8

Virtualenv shell errors

I've just installed virtualenv (with Python 2.7.2) on my Mac, and I followed the guide here: http://virtualenvwrapper.readthedocs.org/en/latest/install.html
But I now get the following errors when I start up my shell every time:
stevedore.extension Could not load 'user_scripts': distribute
stevedore.extension distribute
Traceback (most recent call last):
File "/Library/Python/2.7/site-packages/stevedore/extension.py", line 62, in __init__
invoke_kwds,
File "/Library/Python/2.7/site-packages/stevedore/extension.py", line 74, in _load_one_plugin
plugin = ep.load()
File "/Library/Python/2.7/site-packages/setuptools-0.6c11-py2.7.egg/pkg_resources.py", line 1953, in load
if require: self.require(env, installer)
File "/Library/Python/2.7/site-packages/setuptools-0.6c11-py2.7.egg/pkg_resources.py", line 1966, in require
working_set.resolve(self.dist.requires(self.extras),env,installer))
File "/Library/Python/2.7/site-packages/setuptools-0.6c11-py2.7.egg/pkg_resources.py", line 565, in resolve
raise DistributionNotFound(req) # XXX put more info here
DistributionNotFound: distribute
stevedore.extension Could not load 'project': distribute
stevedore.extension distribute
Traceback (most recent call last):
File "/Library/Python/2.7/site-packages/stevedore/extension.py", line 62, in __init__
invoke_kwds,
File "/Library/Python/2.7/site-packages/stevedore/extension.py", line 74, in _load_one_plugin
plugin = ep.load()
File "/Library/Python/2.7/site-packages/setuptools-0.6c11-py2.7.egg/pkg_resources.py", line 1953, in load
if require: self.require(env, installer)
File "/Library/Python/2.7/site-packages/setuptools-0.6c11-py2.7.egg/pkg_resources.py", line 1966, in require
working_set.resolve(self.dist.requires(self.extras),env,installer))
File "/Library/Python/2.7/site-packages/setuptools-0.6c11-py2.7.egg/pkg_resources.py", line 565, in resolve
raise DistributionNotFound(req) # XXX put more info here
DistributionNotFound: distribute
stevedore.extension Could not load 'user_scripts': distribute
stevedore.extension distribute
Traceback (most recent call last):
File "/Library/Python/2.7/site-packages/stevedore/extension.py", line 62, in __init__
invoke_kwds,
File "/Library/Python/2.7/site-packages/stevedore/extension.py", line 74, in _load_one_plugin
plugin = ep.load()
File "/Library/Python/2.7/site-packages/setuptools-0.6c11-py2.7.egg/pkg_resources.py", line 1953, in load
if require: self.require(env, installer)
File "/Library/Python/2.7/site-packages/setuptools-0.6c11-py2.7.egg/pkg_resources.py", line 1966, in require
working_set.resolve(self.dist.requires(self.extras),env,installer))
File "/Library/Python/2.7/site-packages/setuptools-0.6c11-py2.7.egg/pkg_resources.py", line 565, in resolve
raise DistributionNotFound(req) # XXX put more info here
DistributionNotFound: distribute
I don't know if it is affecting this problem, but I am using ZSH.
I tried to install stevedore through pip (sudo pip install stevedore), but I get the following error:
sudo sh setuptools-0.6c11-py2.7.egg
Processing setuptools-0.6c11-py2.7.egg
removing '/Library/Python/2.7/site-packages/setuptools-0.6c11-py2.7.egg' (and everything under it)
Copying setuptools-0.6c11-py2.7.egg to /Library/Python/2.7/site-packages
setuptools 0.6c11 is already the active version in easy-install.pth
Installing easy_install script to /usr/local/bin
Installing easy_install-2.7 script to /usr/local/bin
Installed /Library/Python/2.7/site-packages/setuptools-0.6c11-py2.7.egg
Processing dependencies for setuptools==0.6c11
Finished processing dependencies for setuptools==0.6c11
TXSLs-MacBook-Pro% sudo pip install stevedore --upgrade
Requirement already up-to-date: stevedore in /Library/Python/2.7/site-packages
Downloading/unpacking distribute (from stevedore)
Running setup.py egg_info for package distribute
Installing collected packages: distribute
Running setup.py install for distribute
Before install bootstrap.
Scanning installed packages
Setuptools installation detected at /Library/Python/2.7/site-packages/setuptools-0.6c11-py2.7.egg
Egg installation
Patching...
Renaming /Library/Python/2.7/site-packages/setuptools-0.6c11-py2.7.egg into /Library/Python/2.7/site-packages/setuptools-0.6c11-py2.7.egg.OLD.1348764450.4
Patched done.
Relaunching...
Traceback (most recent call last):
File "<string>", line 1, in <module>
NameError: name 'install' is not defined
Complete output from command /usr/bin/python -c "import setuptools;__file__='/tmp/pip-build/distribute/setup.py';exec(compile(open(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-FAPgYH-record/install-record.txt --single-version-externally-managed:
Before install bootstrap.
Scanning installed packages
Setuptools installation detected at /Library/Python/2.7/site-packages/setuptools-0.6c11-py2.7.egg
Egg installation
Patching...
Renaming /Library/Python/2.7/site-packages/setuptools-0.6c11-py2.7.egg into /Library/Python/2.7/site-packages/setuptools-0.6c11-py2.7.egg.OLD.1348764450.4
Patched done.
Relaunching...
Traceback (most recent call last):
File "<string>", line 1, in <module>
NameError: name 'install' is not defined
----------------------------------------
Command /usr/bin/python -c "import setuptools;__file__='/tmp/pip-build/distribute/setup.py';exec(compile(open(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-FAPgYH-record/install-record.txt --single-version-externally-managed failed with error code 1 in /tmp/pip-build/distribute
Storing complete log in /Users/txsl/Library/Logs/pip.log
I manually installed setuptools as I couldn't install anything through pip without it.
What has gone wrong here and how can i fix it? The internet doesn't seem to have many cases of the error with stevedore. I feel rather stuck at the moment!
Many thanks!

I also use zsh and had a similar problem. I solved with this:
sudo pip install virtualenv virtualenvwrapper
I have the package python-pip installed in my Ubuntu 12.04.

Based on the error you are getting, it looks like you are having the following error: install glitch when using pip + virtualenv.
The issue is created when using the -distribute switch. The fix is (without re-running virtualenv with --distribute):
source bin/activate
wget http://python-distribute.org/distribute_setup.py
python distribute_setup.py

Had the same error message, upgrading the setuptools resolved the issue for me.
pip install --upgrade setuptools
I've found the information in this thread: http://blog.gmane.org/gmane.comp.python.virtualenv/month=20131001

I had the same problem after upgrading to OSX Mavericks. I fixed it by installing distribute globally.
sudo pip install distribute
I deactivated my current virtualenv first.