How to Install Spack on macOS

Spack is a package manager used to build, install, and manage multiple versions and variants of software on a variety of platforms. In this tutorial, we will walk through the steps to install Spack on macOS.

Prerequisites

Before we proceed, ensure that your system meets the following requirements:

  • macOS operating system
  • The Homebrew package manager installed
  • Git version control system installed

Step-by-Step Guide

  1. Open the terminal on your macOS system by pressing "Command + Spacebar" to open Spotlight Search, type "Terminal" and press Enter.
  2. Run the following command to install Spack via Homebrew:
brew install spack
  1. After the installation is complete, run the following command to verify that Spack has been installed:
spack --version
  1. Next, configure Spack by setting the SPACK_ROOT environment variable to the directory where you want to store your Spack installation. For example, to set Spack's root directory to $HOME/my_spack, run the following command:
export SPACK_ROOT=$HOME/my_spack
  1. Once you have set the SPACK_ROOT environment variable, run the following command to create a new shell with Spack enabled:
spack env activate myenv

Note: Replace "myenv" with the name you want to use for your environment.

  1. You can now use Spack to install and manage packages by using commands such as spack install <package> to install a package and spack load <package> to load it into your environment.

Congratulations! You have successfully installed Spack on your macOS system. You can now use it to manage packages for your development and scientific computing needs.