It seems that’s not the case. Crates.io only needs Github for logging in. Publishing a package uploads a .tar.gz to crates.io with the source code.

https://users.rust-lang.org/t/publishing-crates-without-github-and-some-criticism/134597/11

Interesting! I’m using in fact the NFS CSI driver, and it seems that Velero can attach to any CSI interface to make backups. I’m definetely taking a look at it.