# Atomic Host

Atomic Host is a lightweight, immutable platform, designed with

the sole purpose of running containerized applications.

## The `atomic` module

The atomic module defines the package set required for

running a fully featured, module-based Atomic Host.  Unlike

Host & Platform, the module is not split into userspace and

hardware-enabling parts.  Instead, it's a well integrated, faster

moving module capable of booting on various configurations,

running as an OSTree image and managing containerized

applications.

`atomic` builds against `bootstrap` & `shim` and requires `shim`

at runtime.

Only one stream with rolling updates will be supported.  Since no

other modules build against `atomic`, the module technically

doesn't need a stable API.  The `platform` module will provide

the base container image for applications (modules) running on

top of Atomic Host.

### Initial development

The initial proof-of-concept module was put together using the *Host &

Platform* tools:

* [Host & Platform content definition](https://github.com/fedora-modularity/hp)

* [Package lists & module generators](https://github.com/fedora-modularity/baseruntime-package-lists)

The content definition lists packages that define Atomic

Host, along with SRPM and architecture availability hints.

This user-curated input is then passed to the package lists &

module generators that resolve dependencies using a Host &

Platform development Rawhide snapshot repodata.  The resolved

per-architecture package lists are then merged, the matching

dist-git commits found and the modulemd file included in this

repo is generated.

To fetch the latest modulemd file, simply invoke `make update`

in this repository.

### Long-term plans

*To be done.*