The collection of package slice definitions, for Chisel.

• The Basics
• Using a Specific Chisel Release
• Adding New Slice Definitions

This repository is the official source of all package slice definitions that are supported by Chisel.

Every Chisel release is represented by a Git branch within this repository. At the moment, the officially supported Chisel releases are:

• ubuntu-20.04 - Focal
• ubuntu-22.04 - Jammy
• ubuntu-22.10 - Kinetic (EOL)
• ubuntu-23.04 - Lunar (EOL)
• ubuntu-23.10 - Mantic (EOL)
• ubuntu-24.04 - Noble
• ubuntu-24.10 - Oracular

In each release branch, you'll find a chisel.yaml file that defines the Chisel release, plus a slices folder with all the Slice Definitions Files (SDFs) for that release.

For more information on the SDFs' YAML schema and how to install slices, please refer to the Chisel documentation.

Chisel releases are meant to be used with the chisel CLI. Many of the chisel commands have a --release optional argument (to know which commands support this option, please refer to the Chisel documentation.

When running a chisel command where --release is supported,

• if --release is not given, Chisel will default to the host's Ubuntu release, mapping it to its corresponding branch in this repository. E.g.: if running the chisel command without --release on a Jammy host, Chisel will automatically default to the ubuntu-22.04 Chisel release;
• if --release is an absolute system path, then Chisel will look at the directory tree under that path to find a valid Chisel release (this is especially useful when you're working with custom Chisel releases and/or defining new slices);
• if --release is a string that matches the ubuntu-##.## pattern, then Chisel will use the corresponding Git branch from this repository if it exists.

We welcome and encourage community contributions! To better understand how to write and propose new package slice definitions, please read the contributing guidelines.