ERROR: Failed building wheel for pycryptodome

Question

I was trying to install pycryptodome , python-jose-cryptodome using pip within anaocnda3 environment.

I got this error:

  ERROR: Failed building wheel for pycryptodome

I have tried many versions many solutions(latest versions, specified version, with python 3.8 or 3.7, using requirements text without cache and even alone installation) but nothing worked for me :(. Any solution?

Answer 1

While using pip in an anaconda environment is allowed and fine, issues may arise when using pip and conda together, this was clearly mentioned in the conda docs .

One of the best practices when installing packages in an anaconda environment is to use conda for search and install before using pip.

So instead of directly using pip , try to :

1. Search for pycryptodome in anaconda packages repo

   conda search pycryptodome

   pycryptodome is available in anaconda repo .

2. The next step is to install pycryptodome :

   conda install -c anaconda pycryptodome

   or if you want to use conda-foge channel :

   conda install -c conda-forge pycryptodome

   this should get pycryptodome installed into your env

3. To use a requirements.txt file with conda :

   conda install --yes --file requirements.txt

Summary : Best Practices Checklist When Using Pip in a Conda Environment

Use pip only after conda

• install as many requirements as possible with conda, then use pip

• pip should be run with –upgrade-strategy only-if-needed (the default)

• Do not use pip with the –user argument, avoid all “users” installs

Use conda environments for isolation

• create a conda environment to isolate any changes pip makes
• environments take up little space thanks to hard links
• care should be taken to avoid running pip in the “root” environment

Recreate the environment if changes are needed

• once pip has been used conda will be unaware of the changes
• to install additional conda packages it is best to recreate the environment

Store conda and pip requirements in text files

• package requirements can be passed to conda via the –file argument
• pip accepts a list of Python packages with -r or –requirements
• conda env will export or create environments based on a file with conda and pip requirements .

you can read more about this topic here on anaconda website , and on conda docs