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ERROR: Could not build wheels for opencv-python which > use PEP 517 and cannot be installed directly

Ask Question i have a very equal problem to the problem shown here ERROR: Could not build wheels for scipy which use PEP 517 and cannot be installed directly .

I'm using a jetson Nano (ubuntu 18.04).

Error

Building wheel for opencv-python (PEP 517) ... error ERROR: Command errored out with exit status 1: command: /home/christopher/heartkillayolotest2/heartkillayolotest2/bin/python /home/christopher/heartkillayolotest2/heartkillayolotest2/lib/python3.6/site-packages/pip/_vendor/pep517/_in_process.py build_wheel /tmp/tmpwort0shc cwd: /tmp/pip-install-g68zdlf0/opencv-python Complete output (9 lines): File "/tmp/pip-build-env-1b_l6sbo/overlay/lib/python3.6/site-packages/skbuild/setuptools_wrap.py", line 560, in setup cmkr = cmaker.CMaker(cmake_executable) File "/tmp/pip-build-env-1b_l6sbo/overlay/lib/python3.6/site-packages/skbuild/cmaker.py", line 95, in init self.cmake_version = get_cmake_version(self.cmake_executable) File "/tmp/pip-build-env-1b_l6sbo/overlay/lib/python3.6/site-packages/skbuild/cmaker.py", line 82, in get_cmake_version "Problem with the CMake installation, aborting build. CMake executable is %s" % cmake_executable) Traceback (most recent call last): Problem with the CMake installation, aborting build. CMake executable is cmake ----------------------------------------
ERROR: Failed building wheel for opencv-python Failed to build opencv-python ERROR: Could not build wheels for opencv-python which use PEP 517 and cannot be installed directly

I tried this to solve the problem but it did not help:

(heartkillayolotest2)christopher@ccz:~/heartkillayolotest2/heartkillayolotest2$ pip3 install --upgrade pip Requirement already up-to-date: pip in ./lib/python3.6/site-packages (20.2.3)

(heartkillayolotest2) christopher@ccz:~/heartkillayolotest2/heartkillayolotest2/yolo-v3$ pip3 install --upgrade pip Requirement already up-to-date: pip in /home/christopher/heartkillayolotest2/heartkillayolotest2/lib/python3.6/site-packages (20.2.3)

Unfortunatelly the error still occurs.

Can somebody help me?

After trying most of the suggested options in this and other threads, including the most popular: trying 'pip install --upgrade pip setuptools wheel' before installing openCV.

What finally did the trick for me was:

pip install --no-use-pep517 opencv-python
(macOS)
You are using Jetson Nano which is a arm64 board. There are no pre-built wheels for ARM architecture for opencv-python. Due to this, pip will attempt to build the package from sources. This will not succeed, because there is a known issue with the cmake dependency which is needed for the build. You can check these issues for more info:
cmake: https://github.com/scikit-build/cmake-python-distributions/issues/115
opencv-python: https://github.com/skvark/opencv-python/issues/366
Currently, you can't build OpenCV's Python bindings via the opencv-python package on ARM architecture systems due to the cmake issue. Meanwhile you can follow the official OpenCV documentation to install OpenCV Python bindings from source: https://docs.opencv.org/master/d2/de6/tutorial_py_setup_in_ubuntu.html
Note that the accepted answer is not correct. pip will install the build dependencies automatically (and cython is not needed) given that your pip version is greater than 19.0.
                As of Feb 2021 it seems that the issue for arm64 is [github.com/opencv/opencv-python/issues/…. Also, upgrading pip seemed to have been key for me.
– Frank Podborski
                May 17, 2022 at 7:32
$ sudo apt-get install python-opencv
After that I had to install opencv again. I followed the instructions of the website you gave me (https://docs.opencv.org/master/d2/de6/tutorial_py_setup_in_ubuntu.html).
I also got the same link in a python-forum (german) (https://www.python-forum.de/viewtopic.php?f=2&t=49781&p=373939#p373939). Just for the case that somebody wants to read it in german.
The problem is with cmake and python. Python need skbuild and cython for this job.
pip3 install scikit-build
pip3 install cython
and then
pip3 install opencv-python
Unfortunatelly I was glad to early, because the error still occurs.
I did the following (perhaps these steps will help someone else).
But for me nothing solved the problem. Is there something else I can do?
pip install cython
(yolov3Tensorflow) christopher@ccz:~/TensorFlow_2_x_YOLOv3$ pip install cython Collecting cython   Using cached
Cython-0.29.21-py2.py3-none-any.whl (974 kB) Installing collected
packages: cython Successfully installed cython-0.29.21 WARNING: You
are using pip version 20.1.1; however, version 20.2.3 is available.
You should consider upgrading via the
'/home/christopher/yolov3Tensorflow/bin/python -m pip install
--upgrade pip' command.
pip install --upgrade pip setuptools wheel
(yolov3Tensorflow) christopher@ccz:~/TensorFlow_2_x_YOLOv3$ pip install --upgrade pip setuptools wheel Collecting pip   Using cached
pip-20.2.3-py2.py3-none-any.whl (1.5 MB) Collecting setuptools   Using
cached setuptools-50.3.0-py3-none-any.whl (785 kB) Collecting wheel

Using cached wheel-0.35.1-py2.py3-none-any.whl (33 kB) Installing
collected packages: pip, setuptools, wheel   Attempting uninstall: pip
Found existing installation: pip 20.1.1
Uninstalling pip-20.1.1:
Successfully uninstalled pip-20.1.1   Attempting uninstall: setuptools
Found existing installation: setuptools 47.1.1
Uninstalling setuptools-47.1.1:
Successfully uninstalled setuptools-47.1.1   Attempting uninstall: wheel
Found existing installation: wheel 0.34.2
Uninstalling wheel-0.34.2:
Successfully uninstalled wheel-0.34.2 Successfully installed pip-20.2.3 setuptools-50.3.0 wheel-0.35.1
pip3 install scikit-build
(yolov3Tensorflow) christopher@ccz:~/TensorFlow_2_x_YOLOv3$ pip3 install scikit-build Collecting scikit-build   Using cached
scikit_build-0.11.1-py2.py3-none-any.whl (72 kB) Collecting packaging
Using cached packaging-20.4-py2.py3-none-any.whl (37 kB) Collecting
distro   Using cached distro-1.5.0-py2.py3-none-any.whl (18 kB)
Requirement already satisfied: wheel>=0.29.0 in
/home/christopher/yolov3Tensorflow/lib/python3.6/site-packages (from
scikit-build) (0.35.1) Requirement already satisfied:
setuptools>=28.0.0; python_version >= "3" in
/home/christopher/yolov3Tensorflow/lib/python3.6/site-packages (from
scikit-build) (50.3.0) Requirement already satisfied: six in
/usr/local/lib/python3.6/dist-packages (from packaging->scikit-build)
(1.14.0) Requirement already satisfied: pyparsing>=2.0.2 in
/usr/lib/python3/dist-packages (from packaging->scikit-build) (2.2.0)
Installing collected packages: packaging, distro, scikit-build
Successfully installed distro-1.5.0 packaging-20.4 scikit-build-0.11.1
pip3 install --upgrade pip
(yolov3Tensorflow) christopher@ccz:~/TensorFlow_2_x_YOLOv3$ pip3 install --upgrade pip Requirement already up-to-date: pip in
/home/christopher/yolov3Tensorflow/lib/python3.6/site-packages
(20.2.3)
pip3 install cmake
(yolov3Tensorflow) christopher@ccz:~/TensorFlow_2_x_YOLOv3$ pip3 install cmake Collecting cmake   Using cached
cmake-3.18.2.post1-py3-none-manylinux2014_aarch64.whl (15.2 MB)
Installing collected packages: cmake Successfully installed
cmake-3.18.2.post1
AND THIS IS THE ERROR AGAIN
(yolov3Tensorflow) christopher@ccz:~/TensorFlow_2_x_YOLOv3$ pip
install opencv-python Collecting opencv-python   Using cached
opencv-python-4.4.0.44.tar.gz (88.9 MB)   Installing build
dependencies ... done   Getting requirements to build wheel ... done
Preparing wheel metadata ... done Requirement already satisfied: numpy>=1.13.3 in /usr/local/lib/python3.6/dist-packages (from
opencv-python) (1.16.1) Building wheels for collected packages:
opencv-python   Building wheel for opencv-python (PEP 517) ... error

ERROR: Command errored out with exit status 1:    command:
/home/christopher/yolov3Tensorflow/bin/python
/home/christopher/yolov3Tensorflow/lib/python3.6/site-packages/pip/_vendor/pep517/_in_process.py
build_wheel /tmp/tmpg3wn763c
cwd: /tmp/pip-install-spfl5_2j/opencv-python   Complete output (9 lines):
File "/tmp/pip-build-env-3np44f8c/overlay/lib/python3.6/site-packages/skbuild/setuptools_wrap.py",
line 560, in setup
cmkr = cmaker.CMaker(cmake_executable)
File "/tmp/pip-build-env-3np44f8c/overlay/lib/python3.6/site-packages/skbuild/cmaker.py",
line 95, in init
self.cmake_version = get_cmake_version(self.cmake_executable)
File "/tmp/pip-build-env-3np44f8c/overlay/lib/python3.6/site-packages/skbuild/cmaker.py",
line 82, in get_cmake_version
"Problem with the CMake installation, aborting build. CMake executable is %s" % cmake_executable)   Traceback (most recent call
last):
Problem with the CMake installation, aborting build. CMake executable is cmake   ----------------------------------------

ERROR: Failed building wheel for opencv-python Failed to build
opencv-python ERROR: Could not build wheels for opencv-python which
use PEP 517 and cannot be installed directly
I have no idea what to do know?
        
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