google_image_nixos_custom

google_cloud_image_nixos

This terraform module builds and publishes custom NixOS Google Cloud images.

Runtime dependencies

Because this module uses the "external" provider it needs the following executables to be in the path to work properly:

• bash
• nix
• readlink -f (busybox or coreutils)

Known limitations

NixOS images are built at Terraform plan time. This can make the plan quite slow.

Building the image doesn't yield any output, unless the build is interrupted or failed.

When a new image is published, the old-one gets removed. This potentially introduces a race-condition where other targets are trying to create new instances with the old image. To reduce the race window, create_before_destroy is being used. See hashicorp/terraform#15485 for related discussions.

Only x86_64-linux is currently supported.

Providers

Name	Version
external	n/a
google	n/a

Inputs

Name	Description	Type	Default	Required
NIX_PATH	Allow to pass custom NIX_PATH. Ignored if - or empty.	string	"-"	no
bucket_name	Bucket where to store the image	any	n/a	yes
gcp_project_id	The ID of the project in which the resource belongs. If it is not provided, the provider project is used.	string	""	no
licenses	A list of license URIs to apply to this image. Changing this forces a new resource to be created.	list(string)	[ "https://www.googleapis.com/compute/v1/projects/vm-options/global/licenses/enable-vmx" ]	no
nixos_config	Path to a nixos configuration.nix file	any	n/a	yes

Outputs

Name	Description
NIX_PATH	n/a
self_link	n/a