Well, I updated Greymatter and fiddled with the config, but I still can’t get the archive page for January 1999 to be built correctly.

I thought it was an issue with the first entry being the only one for the whole month, so I forced an entry in beforehand, but it doesn’t appear that gm likes this: either it dislikes ‘old’ postings being forced by hand, or I’ve mucked up some of its config in doing so, and it’s now all inconsistent internally.