From 66229b04ae0ee05779b93d77900a062b8e0e8770 Mon Sep 17 00:00:00 2001 From: Ludovic Courtès Date: Fri, 24 May 2019 08:26:38 +0200 Subject: publish: Add support for lzip. * guix/scripts/publish.scm (show-help, %options): Support '-C METHOD' and '-C METHOD:LEVEL'. (default-compression): New procedure. (bake-narinfo+nar): Add lzip. (nar-response-port): Likewise. (string->compression-type): New procedure. (make-request-handler): Generalize /nar/gzip handler to handle /nar/lzip as well. * tests/publish.scm ("/nar/lzip/*"): New test. ("/*.narinfo with lzip compression"): New test. * doc/guix.texi (Invoking guix publish): Document it. (Requirements): Mention lzlib. --- doc/guix.texi | 25 +++++++++++++++++++------ 1 file changed, 19 insertions(+), 6 deletions(-) (limited to 'doc/guix.texi') diff --git a/doc/guix.texi b/doc/guix.texi index 98c5d1e91d..340b806962 100644 --- a/doc/guix.texi +++ b/doc/guix.texi @@ -757,6 +757,11 @@ Support for build offloading (@pxref{Daemon Offload Setup}) and @uref{https://github.com/artyom-poptsov/guile-ssh, Guile-SSH}, version 0.10.2 or later. +@item +When @url{https://www.nongnu.org/lzip/lzlib.html, lzlib} is available, lzlib +substitutes can be used and @command{guix publish} can compress substitutes +with lzlib. + @item When @url{http://www.bzip.org, libbz2} is available, @command{guix-daemon} can use it to compress build logs. @@ -9656,12 +9661,20 @@ accept connections from any interface. Change privileges to @var{user} as soon as possible---i.e., once the server socket is open and the signing key has been read. -@item --compression[=@var{level}] -@itemx -C [@var{level}] -Compress data using the given @var{level}. When @var{level} is zero, -disable compression. The range 1 to 9 corresponds to different gzip -compression levels: 1 is the fastest, and 9 is the best (CPU-intensive). -The default is 3. +@item --compression[=@var{method}[:@var{level}]] +@itemx -C [@var{method}[:@var{level}]] +Compress data using the given @var{method} and @var{level}. @var{method} is +one of @code{lzip} and @code{gzip}; when @var{method} is omitted, @code{gzip} +is used. + +When @var{level} is zero, disable compression. The range 1 to 9 corresponds +to different compression levels: 1 is the fastest, and 9 is the best +(CPU-intensive). The default is 3. + +Usually, @code{lzip} compresses noticeably better than @code{gzip} for a small +increase in CPU usage; see +@uref{https://nongnu.org/lzip/lzip_benchmark.html,benchmarks on the lzip Web +page}. Unless @option{--cache} is used, compression occurs on the fly and the compressed streams are not -- cgit v1.2.3