Through the installation of pip package that depends on opencv-python when building opencv from source code

Overview

I built opencv from source code in this article. I can do ʻimport cv2` from my own program, but when I try to install a package that depends on opencv-python, I get angry because there is no opencv-python. Since I just put a symbolic link on site-packages, does it mean that opencv is included in pip? By the way, it seems that cmake did not specify the location of pip.

So, I made a package that wraps cv2. ʻImport cv2` can be done, so I thought it might be possible to make an empty opencv-python package and cheat, but since it was a big deal, I wrapped it properly (?).

Constitution

The configuration is as follows.

wheel/
├── build               #The build is output
├── cv2                 #Become a package name
│   ├── __init__.py     #Show it as cv2 outside
│   └── _native
│       ├── cv2.cpython-36m-aarch64-linux-gnu.so #entity
│       └── __init__.py #Import the original cv2
├── dist                #The whl file is output. Pip install this
├── MANIFEST.in         #Specify the entity.
└── setup.py            #Various settings of pip

The contents of each file are as follows. __init__.py I don't know anything. ..

setup.py

from setuptools import setup
from setuptools.dist import Distribution

class BinaryDistribution(Distribution):
    def has_ext_modules(foo):
        return True

long_description = "long description of the wheel"

setup(
    name='opencv-python',
    packages=['cv2'],
    version='3.4.3',

    include_package_data=True,
    distclass=BinaryDistribution,

    author='devmikyom',
    description='OpenCV wrapper for Ubuntu 20.04 on raspberry pi 4',
    long_description = long_description,
    classifiers=[
        'Programming Language :: Python :: 3.6'
    ]
)

:MANIFEST:in

include cv2/_native/cv2.cpython-36m-aarch64-linux-gnu.so

wheel/cv2/__init__.py

from ._native.cv2 import *
__version__ = '3.4.3'

wheel/cv2/_native/__init__.py

from .cv2 import *

__init__.py I really don't know anything. ..

Build and install

$ python setup.py bdist_wheel
$ pip install dist/opencv_python-3.4.3-cp36-cp36m-linux_aarch64.whl

ʻImport cv2` It seems that it can be seen as pip and opencv-python. I'm not sure if this really suits me ...