Let's not badmouth the fine people at Framasoft
Sorry, bad mood, that was uncalled for.
Fortunately Guix takes its mission seriously and won't let a broken URL compromise the reproducibility of their builds
I actually pulled guile-wiredtiger (0.7.0) from a Guix VM, I found no other way to get that software. That's where I got Amirouche's mail. I didn't know the details about the Software Heritage archive and how it can cook tarballs. It's much more than a cache. Guix never cease to amaze me.