On 2024-12-19 12:32, paul wrote:

 Hi Nicolas, apologies for breaking your system :( Is is possible for you 
 to try and bisect the history to find the culprit commit?

 On 12/19/24 10:36, Nicolas Graves wrote:
It is a bit circumvoluted, but it worked properly on my side on
guix@478b9ccea8. Do you see a reason why your patches could break my
user login?

 I'm not sure, I was wondering: do you use/extend the subids-service-type 
 in your configuration or did you already have manually setup /etc/subuid 
 or /etc/subgid? Otherwise I'm not sure how it can impact your system, if 
 you could share even some parts of your operating-system configuration 
 it would make finding the problem a little easier.

 Since you mentioned PAM, these two changes that I authored were recently 
 merged. Could you try and see whether your system work at commit 
 a1ecd7f56c4ffadc49d5501a0df7f4c4556120c2 which is the parent of the 
 first pam change?

 Thank you very much :)

I've tried bisecting and this time it seems to work properly.  I'm not
sure what it was then, but it works fine now!