Activation fails with userborn enabled

[Scrumplex]

When enabling the new experimental user activation program using services.userborn.enable = true; agenix fails to activate.

I am not quite sure what's going on here. A notable quirk of userborn is that it is not a traditional activation script, but rather a systemd unit that is wanted by/required by the nixos activation targets.

Activation log:

Sep 16 17:37:50 andromeda systemd[1]: Starting NixOS Activation...
Sep 16 17:37:50 andromeda initrd-nixos-activation-start[378]: booting system configuration /nix/store/xa6pi703jc9j427cls5qnhvd051vk6yv-nixos-system-andromeda-24.11.20240911.4f807e8
Sep 16 17:37:50 andromeda initrd-nixos-activation-start[378]: running activation script...
Sep 16 17:37:50 andromeda initrd-nixos-activation-start[405]: [agenix] chowning...
Sep 16 17:37:50 andromeda initrd-nixos-activation-start[406]: chown: cannot access '/run/agenix.d': No such file or directory
Sep 16 17:37:50 andromeda initrd-nixos-activation-start[406]: chown: cannot access '/run/agenix.d/': No such file or directory
Sep 16 17:37:50 andromeda initrd-nixos-activation-start[407]: chown: cannot access '/run/agenix.d//beets-secrets.yaml': No such file or directory
Sep 16 17:37:50 andromeda initrd-nixos-activation-start[408]: chown: cannot access '/run/agenix.d//borgbase-repokey': No such file or directory
Sep 16 17:37:50 andromeda initrd-nixos-activation-start[409]: chown: cannot access '/run/agenix.d//id_borgbase': No such file or directory
Sep 16 17:37:50 andromeda initrd-nixos-activation-start[410]: chown: cannot access '/run/agenix.d//listenbrainz-token': No such file or directory
Sep 16 17:37:50 andromeda initrd-nixos-activation-start[411]: chown: cannot access '/run/agenix.d//passwd': No such file or directory
Sep 16 17:37:50 andromeda initrd-nixos-activation-start[412]: chown: cannot access '/run/agenix.d//screenshot-bash': No such file or directory
Sep 16 17:37:50 andromeda initrd-nixos-activation-start[413]: chown: cannot access '/run/agenix.d//wg-scrumplex': No such file or directory
Sep 16 17:37:50 andromeda initrd-nixos-activation-start[405]: Activation script snippet 'agenixChown' failed (1)
Sep 16 17:37:50 andromeda initrd-nixos-activation-start[405]: [agenix] creating new generation in /run/agenix.d/1
Sep 16 17:37:50 andromeda initrd-nixos-activation-start[405]: [agenix] decrypting secrets...
Sep 16 17:37:50 andromeda initrd-nixos-activation-start[405]: decrypting '/nix/store/pmqhzhx7zxyfdnqrgc91gzd0ad2avm73-beets-secrets.yaml.age' to '/run/agenix.d/1/beets-secrets.yaml'...
Sep 16 17:37:50 andromeda initrd-nixos-activation-start[405]: decrypting '/nix/store/27i83hs8hiqq2wa4b48c7zh3smrzl7xr-borgbase-repokey.age' to '/run/agenix.d/1/borgbase-repokey'...
Sep 16 17:37:50 andromeda initrd-nixos-activation-start[405]: decrypting '/nix/store/37620by3rjhq98vvyc622326h38b1p88-id_borgbase.age' to '/run/agenix.d/1/id_borgbase'...
Sep 16 17:37:50 andromeda initrd-nixos-activation-start[405]: decrypting '/nix/store/i9kx61s4mr3gawafm3gaynpim6kb07d5-listenbrainz-token.age' to '/run/agenix.d/1/listenbrainz-token'...
Sep 16 17:37:50 andromeda initrd-nixos-activation-start[405]: decrypting '/nix/store/xwgyj3l8zwix8rzfxg5llm7l4klvhlzh-passwd.age' to '/run/agenix.d/1/passwd'...
Sep 16 17:37:50 andromeda initrd-nixos-activation-start[405]: decrypting '/nix/store/wjwmxc7bkicx28hg94sbk9bba97c6g0s-screenshot-bash.age' to '/run/agenix.d/1/screenshot-bash'...
Sep 16 17:37:50 andromeda initrd-nixos-activation-start[405]: decrypting '/nix/store/11amxy03cwxbmrab26b3caa1xd60v911-wg.age' to '/run/agenix.d/1/wg-scrumplex'...
Sep 16 17:37:50 andromeda initrd-nixos-activation-start[405]: [agenix] symlinking new secrets to /run/agenix (generation 1)...
Sep 16 17:37:50 andromeda initrd-nixos-activation-start[405]: setting up /etc...
Sep 16 17:37:50 andromeda initrd-nixos-activation-start[523]: Path does not exist: /run/current-system
Sep 16 17:37:50 andromeda initrd-nixos-activation-start[405]: Activation script snippet 'nixClosureDiff' failed (1)
Sep 16 17:37:50 andromeda systemd[1]: initrd-nixos-activation.service: Deactivated successfully.