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nix-community
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Description

Collection of image builders [[email protected]]

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nixos-generators - one config, multiple formats

The nixos-generators project allows to take the same NixOS configuration, and generate outputs for different target formats.

Just put your stuff into the configuration.nix and then call one of the image builders.

for example:

nixos-generate -f iso
or
nixos-generate -f iso -c /etc/nixos/configuration.nix

it echoes the path to a iso image, which you then can flash onto an usb-stick or mount & boot in a virtual machine.

Installation

nixos-generators can be installed from source into the user profile like this:

nix-env -f https://github.com/nix-community/nixos-generators/archive/master.tar.gz -i

Supported formats

format

description
amazon Amazon EC2 image
azure Microsoft azure image (Generation 1 / VHD)
cloudstack qcow2 image for cloudstack
do Digital Ocean image
gce Google Compute image
hyperv Hyper-V Image (Generation 2 / VHDX)
install-iso Installer ISO
install-iso-hyperv Installer ISO with enabled hyper-v support
iso ISO
kexec kexec tarball (extract to / and run /kexec_nixos)
kexec-bundle same as before, but it's just an executable
lxc create a tarball which is importable as an lxc container, use together with lxc-metadata
lxc-metadata the necessary metadata for the lxc image to start, usage: lxc image import $(nixos-generate -f lxc-metadata) $(nixos-generate -f lxc)
openstack qcow2 image for openstack
qcow qcow2 image
raw raw image with bios/mbr
raw-efi raw image with efi support
sd-aarch64 Like sd-aarch64-installer, but does not use default installer image config.
sd-aarch64-installer create an installer sd card for aarch64. For cross compiling use

--system aarch64-linux
and read the cross-compile section.
vagrant-virtualbox VirtualBox image for Vagrant
virtualbox virtualbox VM
vm only used as a qemu-kvm runner
vm-bootloader same as vm, but uses a real bootloader instead of netbooting
vm-nogui same as vm, but without a GUI
vmware VMWare image (VMDK)

Usage

Run

nixos-generate --help
for detailed usage information.

select a specific nixpkgs channel

adds ability to select a specific channel version.

example:

nix-shell --command './nixos-generate -f iso -I nixpkgs=channel:nixos-19.09'

Using a particular nixpkgs

To use features found in a different nixpkgs (for instance the Digital Ocean image was recently merged in nixpkgs):

NIX_PATH=nixpkgs=../nixpkgs nixos-generate -f do

Cross Compiling

To cross compile nixos images for other system you have to configure

boot.binfmtMiscRegistrations
on your host system.

For more details about this have a look at : clevers qemu-user.

Once you've run

nixos-rebuild
with theses options, you can use the
--system
option to create images for other architectures.

License

This project is licensed under the MIT License.

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