that lame French service, Framasphere
Let's not badmouth the fine people at Framasoft because of the actions of some unrelated person. They are doing humanity a great service by developing, funding and hosting Free Software alternatives to popular proprietary web services.
Could you at least leave your repos [...] if they're packaged in Guix?
Fortunately Guix takes its mission seriously and won't let a broken URL compromise the reproducibility of their builds. Missing source code is automatically looked up in the Software Heritage archives:
https://archive.softwareheritage.org/browse/origin/directory/?origin_url=https://framagit.org/a-guile-mind/guile-wiredtiger.git
See the Guix blog for details:
https://guix.gnu.org/blog/2019/connecting-reproducible-deployment-to-a-long-term-source-code-archive/