root@elephant ~# guix system list-generations
Generation 1	Oct 05 2019 15:54:56
  file name: /var/guix/profiles/system-1-link
  canonical file name: /gnu/store/z9s6ma8mqd2b5mnqpsm5sc1pr6bqkml3-system
  label: GNU with Linux-Libre 5.1.2
  bootloader: grub
  root device: label: "guix"
  kernel: /gnu/store/mmnl20fg05w8gzzsp4d8dvagmdn1vjil-linux-libre-5.1.2/bzImage
Generation 2	Oct 05 2019 16:54:08
  file name: /var/guix/profiles/system-2-link
  canonical file name: /gnu/store/76mffnrqyvh72y6m9mrpsfbpiapm2n59-system
  label: GNU with Linux-Libre 5.1.2
  bootloader: grub
  root device: label: "guix"
  kernel: /gnu/store/mmnl20fg05w8gzzsp4d8dvagmdn1vjil-linux-libre-5.1.2/bzImage
Generation 3	Oct 05 2019 17:05:04
  file name: /var/guix/profiles/system-3-link
  canonical file name: /gnu/store/ka02lqhddccdm5j6pk9ramq7da97pfbp-system
  label: GNU with Linux-Libre 5.0.10
  bootloader: grub
  root device: label: "guix"
  kernel: /gnu/store/0rblbwja216vhhrqj4150fizmhhq20sv-linux-libre-5.0.10/bzImage
Generation 4	Oct 05 2019 17:09:38
  file name: /var/guix/profiles/system-4-link
  canonical file name: /gnu/store/v6376384fc4v7f6pgp8fxkqjyzgi670i-system
  label: GNU with Linux-Libre 5.0.10
  bootloader: grub
  root device: label: "guix"
  kernel: /gnu/store/0rblbwja216vhhrqj4150fizmhhq20sv-linux-libre-5.0.10/bzImage
Generation 5	Oct 05 2019 17:18:24	(current)
  file name: /var/guix/profiles/system-5-link
  canonical file name: /gnu/store/mp3vnhl6blk0h25iq9mpdmf4yr8m38vm-system
  label: GNU with Linux-Libre 5.0.9
  bootloader: grub
  root device: label: "guix"
  kernel: /gnu/store/yvccl38gl5c4wbd7li0py700bfhfcam5-linux-libre-5.0.9/bzImage