install

Additional install commands

macOS

Homebrewverified · 100%

brew install chunkah

local Homebrew formula metadata

Linux

Fedora dnfverified · 92%

sudo dnf install chunkah

Fedora Rawhide package metadata · chunkah · source: dl.fedoraproject.org

overview

Package summary

OCI building tool for content-based layers

Project links

Commands and aliases

chunkah

history

Project history and usage

chunkah is a CoreOS OCI image tool that turns a flat root filesystem or existing image into content-based layers intended to improve layer reuse.

Project history

The GitHub repository was created in December 2025. The README explains chunkah as a post-processing step for images whose Dockerfile-derived layers do not match reusable content boundaries.

Adoption history

The upstream README presents container-image use through quay.io/coreos/chunkah as the primary path, with cargo install and Fedora packaging as additional options. The batch input records Homebrew and DNF packaging.

How it is used

Users can split an existing image or split an image at build time with Podman and Buildah. The README also documents Docker image-mount usage, SOURCE_DATE_EPOCH support, cosign verification, xattr-based component hints, output formats, max-layer tuning, pruning, and bootc-image compatibility.

Why package nerds care

chunkah is interesting to container and distro package people because it maps package or component boundaries back onto OCI layers after the image has been built. That makes package churn, client pulls, and shared storage the focus rather than the textual Dockerfile step history.

Timeline

2025: Public GitHub repository created.
2026: v0.1.0 released.
2026: v0.6.0 release documented in the README examples.

Related projects

The README positions chunkah alongside Podman, Buildah, Docker or Moby, skopeo, bootc images, rpm-ostree component hints, zstd:chunked, cosign, and OCI image tooling.

Sources

security posture

No protected-tool coverage found yet

No matching local secret-handling manifest was found for chunkah. Nucleus package metadata is still published here so future coverage has a stable package URL.

Install behavior

No Homebrew post-install hook is recorded in formula metadata.
Homebrew bottle metadata is available for 2 platform targets.
Installs with 2 runtime dependencies.
Build metadata lists 2 build dependencies.

Recommended review

Before unattended agent use, check whether the tool reads plaintext credentials, writes remote state, publishes artifacts, or shells out to plugins.

executables

Installed executables

Command	Kind	Exposure	Note
`chunkah`	cli	global executable

freshness

Version and freshness

These signals separate page generation age, package-manager activity, and upstream release comparison. Version lag is warned only when an evidence URL and comparable versions are present.

page generated2026-07-08

manager version0.6.0

manager updated2026-06-08

local dataok

upstreamnot checked

latest detectednot detected

https://github.com/coreos/chunkah

infoNo cached GitHub release or tag data was available.https://github.com/coreos/chunkahnone confidence

install metadata

Package metadata

Package key	brew:chunkah
Version	0.6.0
Package manager	Homebrew
Package manager page	https://formulae.brew.sh/formula/chunkah
Homepage	https://github.com/coreos/chunkah
Repository	https://github.com/coreos/chunkah
Upstream docs	https://github.com/coreos/chunkah#readme
License	Apache-2.0
Source archive	https://github.com/coreos/chunkah/releases/download/v0.6.0/chunkah-0.6.0.tar.gz
Last updated	2026-06-08T19:36:33Z
Pulse	updated
Dependencies	openssl@3, zlib-ng-compat
Build dependencies	pkgconf, rust
Bottle	available (on arm64_linux, x86_64_linux)
Homebrew post-install	not defined
Service	none declared

registry facts

Source database details

Source Database	Homebrew formula API
Tap	homebrew/core
Full Name	chunkah
Version Scheme	0
Revision	0
Requirements	linux
Bottle Stable Root URL	https://ghcr.io/v2/homebrew/core
Deprecated	no
Disabled	no
Keg Only	no
URL Keys	stable

source database matches

Other package-manager records

Matches are pulled from external package-manager indexes and kept separate from local Automic Vault package links.

dnf95%

chunkah 0.6.0-1.fc45

OCI building tool for content-based container image layers

https://github.com/coreos/chunkah

sudo dnf install chunkah

License: Apache-2.0 AND Apache-2.0 WITH LLVM-exception AND LGPL-2.1-or-later AND MIT AND Zlib AND ((MIT OR Apache-2.0) AND Unicode-3.0) AND (0BSD OR MIT OR Apache-2.0)
Category: Unspecified
Architecture: x86_64
Source Package: chunkah
8 dependencies
2 provides
normalized package name match
Matched by: Chunkah

Fedora Rawhide package metadata · dl.fedoraproject.org · Fedora Rawhide package metadata: chunkah from https://dl.fedoraproject.org/pub/fedora/linux/development/rawhide/Everything/x86_64/os/repodata/e5ca8ce900cd68f5419e1c39ae517343100b306336cbaeb70a3c153121d95094-primary.xml.zst

package graph

Links come from deterministic package relationships, av.db category and tag curation, ecosystem matches, and package hub membership.

source trail

Generated from repository data

This page is generated by av-web from the private package SQLite artifact built by scripts/generate-pkg-sqlite.py.

Combined YAML source

View the package source record on GitHub.

combined/chunkah.yml

Used sources

Nucleus package database
av.db category and tag curation
cross-ecosystem install command graph
curated package history
external package-manager database matches
package relationship graph
package version freshness
package-page enrichment

Install chunkah with Homebrew, dnf