nixos/btrfs: use blake2b instead of blake2b_generic for kernel 6.19+ (#473428)

        "crc32c"

      ]

      ++ optionals (config.boot.kernelPackages.kernel.kernelAtLeast "5.5") [

        # Needed for mounting filesystems with new checksums

        "xxhash_generic"

        "blake2b_generic"

        # `sha256` is always available, whereas `sha256_generic` is not available from 6.17 onwards

        # The canonical names of these modules are not very stable, so use the algorithm names that the btrfs module expects.

        # See: https://github.com/torvalds/linux/blob/v6.19-rc1/fs/btrfs/super.c#L2705-L2708

        "xxhash64"

        "sha256" # Should be baked into our kernel, just to be sure

        "blake2b-256"

      ];

      boot.initrd.extraUtilsCommands = mkIf (!config.boot.initrd.systemd.enable) ''