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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

Installing and using RayLib in macOS 12.2.1 with Python 3.10

I am using a macOS 12.2.1 with Python 3.10 and I am trying to install Raylib Python CFFI 3.7 or higher but whenever I run the python3 -m pip install raylib command or the pip3 install raylib command but I keep getting the error below:
generating cffi module 'build/temp.macosx-10.9-universal2-3.10/raylib._raylib_cffi.c'
building 'raylib._raylib_cffi' extension
build/temp.macosx-10.9-universal2-3.10/raylib._raylib_cffi.c:570:14: fatal error: 'raylib.h' file not found
#include "raylib.h"
^~~~~~~~~~
1 error generated.
error: command '/usr/bin/clang' failed with exit code 1
[end of output]
I tried several things to solve this issue but no luck.

My macOS is using an Apple M1 Max chip and it looks like my macOS is having compilation issues with raylib.
If you have an M1 based Mac, you should create a Rosetta based terminal and work within that terminal by following these steps below [ONLY FOR macOS M1].
- Uninstall all the packages I previously had installed by executing python3 -m pip uninstall [package]
- Locate the Terminal application within the Utilities folder (Finder > Go menu > Utilities)
- Select Terminal.app and right-click on it, then choose “Duplicate”.
- Rename the duplicated Terminal app something obvious and distinct, like ‘Rosetta Terminal’.
- Now select the freshly renamed ‘Rosetta Terminal’ app and right-click and choose “Get Info” (or hit Command+i)
- Check the box for “Open using Rosetta”, then close the Get Info window.
- Run the “Rosetta Terminal” as usual, which will fully support Homebrew and other x86 command line apps.
- In the “Rosetta Terminal”, first ensure pip is upgraded python3 -m pip install --upgrade pip and then install raylib python3 -m pip install raylib
- Then you should be able to run your raylib based python game.

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

Installation using setup.py is now impossible on macOS Big Sur

I have 2 of my projects that install perfectly fine on ubuntu, both require python3.8, both are installable using python setup.py install and I occasionally uninstall / install them from / to virtual environments as well as globally for testing purposes. Recently, all kinds of troubles and error messages started to occur not following any special event, I just woke up one day, and tried to install one of them, I got an error, then I tried the other and got another error. I will include both setup.py scripts and show the steps I follow on macOS Big Sur 11.0 to reproduce the results, given that both install perfectly fine on Ubuntu with the same list of respective dependencies.
Versions:
python: 3.8.6
pip: 20.3.1
macOS: 11.0.1
Project 1:
requirements.txt
imagesize==1.2.0
numpy==1.18.5
pandas==1.1.4
seaborn==0.11.0
tensorflow==2.3.1
matplotlib==3.3.3
lxml==4.6.2
imgaug==0.4.0
tensorflow-addons==0.11.2
opencv-python-headless==4.4.0.46
imagecorruptions==1.1.2
configparser~=5.0.1
scipy==1.5.4
PyQt5==5.15.2
tabulate==0.8.7
ipykernel==5.3.4
setup.py
from setuptools import setup, find_packages
install_requires = [dep.strip() for dep in open('requirements.txt')]
setup(
name='project1',
version='1.0',
packages=find_packages(),
url='url',
license='MIT',
author='author',
author_email='email#domain',
description='description goes here',
install_requires=install_requires,
python_requires='>=3.8',
entry_points={
'console_scripts': [
'some_entry_point',
],
},
)
Notes:
I will truncate logs for character limits.
The attempts below are done within a virtualenv
All kinds of problems do not occur if I just use pip install -r requirements
Installation works perfectly fine on Ubuntu and used to work perfectly fine on macOS even after I upgraded to Big Sur, it just suddenly decided to never work again.
python is installed using brew install python#3.8
Attempt 1:
virtualenv proj1
source proj1/bin/activate
python setup.py install
Result:
Searching for PyQt5==5.15.2
Reading https://pypi.org/simple/PyQt5/
Downloading https://files.pythonhosted.org/packages/28/6c/640e3f5c734c296a7193079a86842a789edb7988dca39eab44579088a1d1/PyQt5-5.15.2.tar.gz#sha256=372b08dc9321d1201e4690182697c5e7ffb2e0770e6b4a45519025134b12e4fc
Best match: PyQt5 5.15.2
Processing PyQt5-5.15.2.tar.gz
error: Couldn't find a setup script in /var/folders/hr/61r_7jcx2r3cnklwrr2zwbqw0000gn/T/easy_install-sl9y34mj/PyQt5-5.15.2.tar.gz
Attempt 2: (I install pyqt using pip)
pip install pyqt5==5.15.2 # success
python setup.py install # fail
Result:
No module named numpy.
Attempt 3: (add setup_requires=['numpy==1.18.5'] to setup())
python setup.py install
Result:
numpy.distutils.system_info.NotFoundError: No lapack/blas resources found. Note: Accelerate is no longer supported.
During handling of the above exception, another exception occurred:
# Traceback goes here
RuntimeError: implement_array_function method already has a docstring
Attempt 4:
I checked this issue and there is nothing helpful yet so I manually install numpy and scipy:
pip install numpy==1.18.5 scipy # success
python setup.py install # fail
Result:
ModuleNotFoundError: No module named 'skbuild'
Attempt 5:
pip install scikit-build==0.11.1 # success
python setup.py install # fail
Result:
error: Setup script exited with Problem with the CMake installation, aborting build. CMake executable is cmake
Attempt 6:
I checked the issue here and accordingly:
pip install cmake # success
python setup.py install
Opencv is being built, I'm not sure why or what triggered the build so I aborted and manually installed opencv using pip:
pip install opencv-python-headless==4.4.0.46 # success
python setup.py install # fail
Result:
Could not find suitable distribution for Requirement.parse('tensorflow-addons==0.11.2')
Attempt 7:
pip install tensorflow-addons==0.11.2 # success
python setup.py install
Again lxml is being built, I don't know how or why, so I manually install it and:
pip install lxml==4.6.2 # success
python setup.py install # fail
Result:
Running matplotlib-3.3.3/setup.py -q bdist_egg --dist-dir /var/folders/hr/61r_7jcx2r3cnklwrr2zwbqw0000gn/T/easy_install-q32mufo3/matplotlib-3.3.3/egg-dist-tmp-_js7sem9
UPDATING build/lib.macosx-11.0-x86_64-3.8/matplotlib/_version.py
set build/lib.macosx-11.0-x86_64-3.8/matplotlib/_version.py to '3.3.3'
error: Setup script exited with error: Failed to download FreeType. Please download one of ['https://downloads.sourceforge.net/project/freetype/freetype2/2.6.1/freetype-2.6.1.tar.gz', 'https://download.savannah.gnu.org/releases/freetype/freetype-2.6.1.tar.gz'] and extract it into build/freetype-2.6.1 at the top-level of the source repository.
Attempt 8:
pip install matplotlib==3.3.3 # success
python setup.py install # fail
Result:
Could not find suitable distribution for Requirement.parse('tensorflow==2.3.1')
Attempt 9:(already more than 75% of the requirements were already installed manually using pip in the previous attempts)
pip install tensorflow==2.3.1 # success
python setup.py install # fail
Result:(pandas fails to install)
RuntimeError: Cannot cythonize without Cython installed.
Attempt 10: (I manually install cython)
pip install cython # success
python setup.py install
Again pandas for some reason is being built, so I manually install it and the list goes on ...
I think after this simple demonstration, I don't even need to replicate the steps of the second project however here are its requirements and I pretty much get a variation of the same problems shown above.
requirements.txt for project2
oauth2client==4.1.3
gcloud==0.18.3
pyarrow==2.0.0
requests==2.24.0
pandas==1.1.4
httplib2==0.15.0
TA-Lib==0.4.19
matplotlib==3.3.2
matplotlib fails first, followed by ta-lib (given that I run brew install ta-lib before then) and the list goes on ...

Instead of python setup.py install do python -m pip install ..
Instead of python setup.py develop do python -m pip install --editable ..

PyQt5 dependency in a module on Debian [duplicate]

This question already has answers here:
Install PyQt5 5.14.1 on Linux
(8 answers)
Closed 3 years ago.
I have a Python module with a __main__ that uses PyQt5. I've installed PyQt5 on a Debian Buster box:
apt-get install python3-pyqt5
The __main__ program runs as expected if I execute
python3 mymodule/__main__.py
from the source directory. Now I've installed the module into python:
python3 setup.py install
That worked. The setup.py lists a dependency on pyqt5:
setup(
# ...
install_requires=['PyQt5'],
entry_points={"gui_scripts": ["mymodule = mymodule.__main__:main"]},
Setup created a script /usr/local/bin/mymodule. When I run that, I get an error message:
pkg_resources.DistributionNotFound: The 'PyQt5' distribution was not found and is required by mymodule
What am I missing?
EDIT: tried installing pyqt5 via pip, got the following error:
seva#sandbox:~$ sudo pip3 install pyqt5
Collecting pyqt5
Using cached https://files.pythonhosted.org/packages/3a/fb/eb51731f2dc7c22d8e1a63ba88fb702727b324c6352183a32f27f73b8116/PyQt5-5.14.1.tar.gz
Installing build dependencies ... done
Complete output from command python setup.py egg_info:
Traceback (most recent call last):
File "<string>", line 1, in <module>
File "/usr/lib/python3.7/tokenize.py", line 447, in open
buffer = _builtin_open(filename, 'rb')
FileNotFoundError: [Errno 2] No such file or directory: '/tmp/pip-install-26kj5hrc/pyqt5/setup.py'
----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-install-26kj5hrc/pyqt5/

OS-level package managers are designed to be consistent within itself. But they aren't designed to interoperate with language package managers. apt-get-installed python3-pyqt5 could be recognized by other Debian packages but not by pip/setuptools.
So either you convert your package to .deb (using stdeb, for example), set dependency to python3-pyqt5 and install it with apt/apt-get/dpkg. Or you install everything using pip:
pip install pyqt5
pip install . # to install your package
If your dependencies are properly declared in the package the latter command should be enough — pip will run the former itself.
PS. Also please consider virtualenv to separate pip-installed packages from system-installed. virtualenv itself could be system-installed or user-installed:
apt install python3-virtualenv
or
pip install [--user] virtualenv