[tor-relays] libzstd and/or liblzma

[Felix]

 >> Can somebody please help me understand the change log for
 >> 3.1.x: "Support for these algorithms requires that tor is
 >> built with the libzstd and/or
 >> liblzma libraries available." Is it AND or OR or something whatever
 >> different ?
 >
 >
 > Hi!  Let me try to clear it up:
 >
 > If Tor is built with liblzma available, it will use liblzma when
 > appropriate.  The lzma format is expensive to calculate, but it
 > provides very good compression, so we only use it for cases when we
 > can compress something once and server it many many times -- like
 > consensus documents, or consensus diffs.
 >
 > If Tor is built with libzstd available, it will use libzstd when
 > appropriate. The zstd format is cheap to calculate, but appears to
 > provide better compression than zlib on our data.
 >
 > If Tor is built with both libraries available, it will use either one
 > when appropriate.
 >
 > Of course, we can only use these compression formats when both sides
 > support them.

Thanks. Clear to me. So 'Liblzma N/A' should not be an issue.

-- 
Cheers Felix