This repository holds a minimal installer for Conda specific to conda-forge. It is comparable to Miniconda, but with:

• conda-forge set as the default channel
• an emphasis on supporting various CPU architectures
• optional support for PyPy in place of standard Python (aka "CPython")
• optional support for Mamba in place of Conda

Miniforge installers are available here: https://github.com/conda-forge/miniforge/releases

Latest installers with Python 3.8 (*) in the base environment:

(*) OS X arm64 will be installed with Python 3.9. The Python version is specific only to the base environment. Conda can create new environments with different Python versions and implementations.

(**) Apple silicon builds are experimental and haven't had testing like the other platforms.

Latest installers with PyPy 3.6 in the base environment:

Latest installers with Mamba in the base environment:

Latest installers with Mamba and PyPy 3.6 in the base environment:

To install download the installer and run,

bash Miniforge3-Linux-x86_64.sh   # or similar for other installers for unix platforms

or if you are on Windows, double click on the installer.

For non-interactive usage, look at the options by running the following:

bash Miniforge3-Linux-x86_64.sh -h   # or similar for other installers for unix platforms

or if you are on windows, run:

start /wait "" build/Miniforge3-Windows-x86_64.exe /InstallationType=JustMe /RegisterPython=0 /S /D=%UserProfile%\Miniforge3

If you wish to download the appropriate installer through the command line in a more automated fashion, you may wish to a command similar to

For Linux, any architecture, use the following command

wget -O Miniforge3.sh https://github.com/conda-forge/miniforge/releases/latest/download/Miniforge3-$(uname)-$(uname -m).sh

For MacOSX, any architecture, use the following command

curl -fsSLo Miniforge3.sh https://github.com/conda-forge/miniforge/releases/latest/download/Miniforge3-MacOSX-$(uname -m).sh

This will download the appropriate installer for the present architecture with the filename Miniforge3.sh. Run the shell script with the command in batch mode with the -b flash:

bash Miniforge3.sh -b

On macOS, you can install miniforge with Homebrew by running

brew install miniforge

• Automatic build of constructor.
• Automatic upload of constructor results.
• Automatic testing of constructor.
• Integration with conda-forge's developer documentation.
• Integration with conda-forge's official site.
• Upstream to Anaconda ?

After construction on the CI, the installer is tested against a range of distribution that match the installer architecture ($ARCH). For example when architecture is aarch64, the constructed installer is tested against:

• Centos 7
• Debian Buster (10)
• Ubuntu 16.04
• Ubuntu 18.04
• Ubuntu 19.10
• Ubuntu 20.04

Installers are built and uploaded via the CI but if you want to construct your own Miniforge installer, here is how:

# Configuration
export ARCH=aarch64
export DOCKERIMAGE=condaforge/linux-anvil-aarch64

bash build_miniforge.sh

To release a new version of Miniforge:

• Make a new pre-release on GitHub with name $CONDA_VERSION-$BUILD_NUMBER
• Wait until all artifacts are uploaded by CI
  • For each build, we upload 3 artifacts
    1. One installer with the version name
    2. One installer without the version name
    3. The SHA256
  • At the time of writing, the is a sum of 60 artifacts, and with the two sources, we expect a grand total of 62 artifacts.
• Mark the pre-release as a release

NOTE: using a pre-release is important to make sure the latest links work.

BSD 3-Clause

Relevant conversations:

• conda-forge/conda-forge.github.io#871 (comment)
• conda-forge/conda-forge.github.io#922