Nextcloud is currently used by many public services in Europe (universities, governments, cities etc.) as an alternative to Big Tech solutions, keeping their documents and communication safe in Europe. The European Commission’s Open Source Programme Office is organising a hackathon to enhance Nextcloud with additional features so that more public administrations can include such solutions as part of their digitalisation journey.
Help us build and protect Europe’s digital sovereignty!
Reproducibility is a big topic for Guix developers and users as well, just have a look at how many times they talk about that: https://hpc.guix.info/blog/2022/07/is-reproducibility-practical/
Also correct me if I'm wrong but I think Guix goes further on reproducibility than Nix, because everything they package is from source, whereas my understanding is that a lot of Nix packages are built from binaries.