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Conda

Description

Conda is an open source package management system and environment management system that runs on Windows, macOS, Linux and z/OS. Conda quickly installs, runs and updates packages and their dependencies.

Get started

conda create -n <env name> <package[=<version>]>
conda activate <env name>
conda install <package[=version]>

Cheatsheet

Environments

Activate an environment:

conda activate <environment name>

Deactivates an environment. If in base, closes conda.

conda deactivate

List all environments:

conda env list

conda info --envs

Create a new virtual environment with 

conda create --name <environment name> [<packages[=<version>]>]

Export active environment to a file

conda env export > environment.yml

Export all environments to its own file:

for env in $(conda env list | cut -d" " -f1); do 
   if [[ ${env:0:1} == "#" ]] ; then continue; fi;
   conda env export -n $env > ${env}.yml
done

Create environment from file

conda env create -f environment.yml

Clone an environment

conda create --name <environment name> --clone <original environment>

Remove an environment

conda env remove --name <environment name>

conda remove --name <environment name> --all

List all packages installed (in current environment)

conda list

List all packages installed with path

conda list --explicit

Show history of changes in packages

conda list --revisions

Packages

Install a package (use -f to force the installation)

conda install <package>

Install package(s) specified in a file (like a Python requirements file)

conda install --file <file>

Uninstall a package

conda remove <package>

Search for a package

conda search <package>

Configuration

Show configuration

conda config --show

Add channels (use add instead of append to put the channel on the top of the list)

conda config --append channels <channel name>

Building Packages

Install conda build

conda install conda-build

Build package

conda build <directory with the files>

Build for other platforms

conda convert --platform all <path to package>

Install built package

conda install --use-local <package>

From Pypi

Create files

conda skeleton pypi <package>

Build for different Python version

conda build --python <version> <directory with the files>

Custom Channel

Add channel

conda config --append channels file://<path to folder>

(re)build the index

conda index <channel folder>/<platform>

Reference

  • Jordi Deu Pons
  • Miguel Grau
  • Federica Brando
  • Carlos López-Elorduy