Gentoo now has a presence on Codeberg, and contributions can be submitted for the Gentoo repository mirror at https://codeberg.org/gentoo/gentoo as an alternative to GitHub. Eventually also other git repositories will become available under the Codeberg Gentoo organization. This is part of the gradual mirror migration away from GitHub, as already mentioned in the 2025 end-of-year review. Codeberg is a site based on Forgejo, maintained by a dedicated non-profit organization, and located in Berlin, Germany. Thanks to everyone who has helped make this move possible!
These mirrors are for convenience for contribution and we continue to host our own repositories, just like we did while using GitHub mirrors for ease of contribution too.
Each package is precompiled for different architectures (aarch, x84_64) for different targets (linux, darwin) and each NixOS version has a separate binary cache (unstable, 25.11, 24.11)
That alone means there are at least 12 different versions for one package of a specified version in the binary cache. Now add different versions to that and and you are well below 50MB per package.