Cachix

Updated: December 15, 2024

Cachix is a binary cache for Nix packages, allowing users to share and distribute pre-built binaries.

This documentation provides an overview of how to set up and use Cachix in a NixOS environment.

Table of Contents

• Installation
• Configuration
• Usage
• Remote Cache
• Substitute Cache

They allow FOSS upto 5GB of data to be stored. Check for details

Installation

# Apparently just installs as a package
pkgs.cachix

Configuration

Login to Cachix account and create a binary cache.
Create auth token (personal is account | per-cache is cache specific)

# set the auth token with either:
cachix authtoken XXX
export CACHIX_AUTH_TOKEN=XXX

Usage

After building a package we can push the binary to Cachix

Remote Cache

Substitute Cache

Other caching tools

1. ssh-serve