Failed building wheel for mysqlclient Running setup.py clean for mysqlclient Failed to build mysqlclient. In Python, a wheel is a package format that contains the instruction for the Python version and platforms supported by the package, as well as the package you wish to install that's already built.
What Is a Python Wheel? A Python . whl file is essentially a ZIP ( . zip ) archive with a specially crafted filename that tells installers what Python versions and platforms the wheel will support. A wheel is a type of built distribution.
According to the Python Packaging Authority (PyPA), wheels are the preferred way that pip installs Python modules from the Python Package Index (PyPI) because they're smaller, faster to install, and more efficient than building the package from the source code contained in an sdist.
To Solve error: legacy-install-failure, you have to upgrade wheel with this Command Commandline pip install –upgrade wheel Now, Try to Upgrade your setuptools with this commandline pip install –upgrade setuptools Now, Try to install gensim again with this command: pip install gensim OR pip3 install gensim.
(pip maintainer here!)
If the package is not a wheel, pip tries to build a wheel for it (via setup.py bdist_wheel
). If that fails for any reason, you get the "Failed building wheel for pycparser" message and pip falls back to installing directly (via setup.py install
).
Once we have a wheel, pip can install the wheel by unpacking it correctly. pip tries to install packages via wheels as often as it can. This is because of various advantages of using wheels (like faster installs, cache-able, not executing code again etc).
Your error message here is due to the wheel
package being missing, which contains the logic required to build the wheels in setup.py bdist_wheel
. (pip install wheel
can fix that.)
The above is the legacy behavior that is currently the default; we'll switch to PEP 517 by default, sometime in the future, moving us to a standards-based process for this. We also have isolated builds for that so, you'd have wheel installed in those environments by default. :)
Yesterday, I got the same error: Failed building wheel for hddfancontrol
when I ran pip3 install hddfancontrol
. The result was Failed to build hddfancontrol
. The cause was error: invalid command 'bdist_wheel'
and Running setup.py bdist_wheel for hddfancontrol ... error
. The error was fixed by running the following:
pip3 install wheel
(From here.)
Alternatively, the "wheel" can be downloaded directly from here. When downloaded, it can be installed by running the following:
pip3 install "/the/file_path/to/wheel-0.32.3-py2.py3-none-any.whl"
Since, nobody seem to mention this apart myself. My own solution to the above problem is most often to make sure to disable the cached copy by using: pip install <package> --no-cache-dir
.
In my case, update the pip versión after create the venv, this update pip from 9.0.1 to 20.3.1
python3 -m venv env/python
source env/python/bin/activate
pip3 install pip --upgrade
But, the message was...
Using legacy 'setup.py install' for django-avatar, since package 'wheel' is not installed.
Then, I install wheel package after update pip
python3 -m venv env/python
source env/python/bin/activate
pip3 install --upgrade pip
pip3 install wheel
And the message was...
Building wheel for django-avatar (setup.py): started
default: Building wheel for django-avatar (setup.py): finished with status 'done'
It might be helpful to address this question from a package deployment perspective.
There are many tutorials out there that explain how to publish a package to PyPi. Below are a couple I have used;
medium
real python
My experience is that most of these tutorials only have you use the .tar of the source, not a wheel. Thus, when installing packages created using these tutorials, I've received the "Failed to build wheel" error.
I later found the link on PyPi to the Python Software Foundation's docs PSF Docs. I discovered that their setup and build process is slightly different, and does indeed included building a wheel file.
After using the officially documented method, I no longer received the error when installing my packages.
So, the error might simply be a matter of how the developer packaged and deployed the project. None of us were born knowing how to use PyPi, and if they happened upon the wrong tutorial -- well, you can fill in the blanks.
I'm sure that is not the only reason for the error, but I'm willing to bet that is a major reason for it.
Try this:
sudo apt-get install libpcap-dev libpq-dev
It has worked for me when I have installed these two.
See the link here for more information
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