GNU Guix functions well as a package manager and has been extended to also serve as a full operating system, under the name Guix System. In this talk I will show how it is possible to declaratively create operating system images for specific uses. Different than a 'spin' of a distribution, these can be used as a one-off live image or as a starting image to install to a computer before making further tweaks. Create your own minimal rescue image without needing to remaster media or use loopback mounts.