Mamba cheat sheet

Introduction

What is mamba: Mamba is a package and environment for Python. It is similar to Conda, but uses a C++ solver that is much faster. It can pick packages from regular Conda channels. It’s syntax mirrors that of Conda quite closely.

Installation: You can install micromamba by itself, say in a Docker image. But on regular workstations, you first install Conda, then install mamba in the base env using brew

brew install --cask micromamba

Then, enable shell completion:

micromamba shell completion
source ~/.zshrc

Operations

Creating new env:

micromamba create -n <name of env> <pkg list>
micromamba create -n stac jupyterlab

You will notice the resolution time is pretty fast and so is the speed of installs. The shell returns an output like so:

                                           __
          __  ______ ___  ____ _____ ___  / /_  ____ _
         / / / / __ `__ \/ __ `/ __ `__ \/ __ \/ __ `/
        / /_/ / / / / / / /_/ / / / / / / /_/ / /_/ /
       / .___/_/ /_/ /_/\__,_/_/ /_/ /_/_.___/\__,_/
      /_/

warning  libmamba 'root_prefix' set with default value: /Users/abharathi/micromamba
conda-forge/osx-arm64                                4.0MB @   3.0MB/s  1.5s
conda-forge/noarch                                  10.1MB @   3.9MB/s  2.9s

Transaction

  Prefix: /Users/abharathi/micromamba/envs/stac

  Updating specs:

   - jupyterlab


  Package                              Version  Build               Channel                    Size
─────────────────────────────────────────────────────────────────────────────────────────────────────
  Install:
─────────────────────────────────────────────────────────────────────────────────────────────────────

  + anyio                                3.6.2  pyhd8ed1ab_0        conda-forge/noarch         85kB

Listing and Activating env: You can use regular conda to activate the env:

micromamba env list
micromamba activate <env name>

Installing packages Once activated, then use the micromamba install <pkg> syntax, similar to conda.

micromamba install -c <channel> <pkg_name> -y