SkiffOS Extensions Template

SkiffOS compiles a lightweight operating system for any Linux-compatible computer.

This is an example of how Skiff can be extended with custom configuration packages. Skiff is added as a submodule, and is instructed to use the parent repo configs directory:

export SKIFF_EXTRA_CONFIGS_PATH=$(pwd)/configs

Then, any extra configuration packages you add in this repo will be available.

To get started:

make help

Alternatively:

source setup.env
cd ./skiffos
make # this will print help!

As a basic example:

export SKIFF_WORKSPACE=pi4
export SKIFF_CONFIG=pi/4,mycustom/device
make configure compile

# flash to sd card
make cmd/pi/common/{format,install}

The example mycustom/device package has examples of Wi-Fi configurations, SSH keys, and other common customizations.

Configuration Packages

Skiff supports modular configuration packages: kernel & buildroot configs, root filesystem overlays, patches, hooks, and other resources.

Layers are named as namespace/name. For example, a Raspberry Pi 4 configuration would be pi/4 and Docker is apps/docker.

├── cflags:         compiler flags in files
├── buildroot:      buildroot configuration fragments
├── buildroot_ext:  buildroot extensions (extra packages)
├── buildroot_patches: extra Buildroot global patches
│   ├── <packagename>: patch files for Buildroot <packagename>
│   └── <packagename>/<version>: patches for package version
├── busybox:        busybox configuration fragments
├── extensions:     extra commands to add to the build system
│   └── Makefile
├── hooks:          scripts hooking pre/post build steps
│   ├── post.sh
│   └── pre.sh
├── kernel:         kernel configuration fragments
├── kernel_patches: kernel .patch files
├── root_overlay:   root overlay files
├── metadata:       metadata files
│   ├── commands
│   ├── dependencies
│   ├── description
│   └── unlisted
├── resources:     files used by the configuration package
├── scripts:       any scripts used by the extensions
├── uboot:         u-boot configuration fragments
├── uboot_patches: u-boot .patch files
└── users:         additional buildroot user config files

All files are optional.

Custom Users

To add custom users, add files in the "users" dir with the makeuser syntax.