[PATCH] add lzma and xz to unpack plugin

[Auke Kok]

Zbigniew Luszpinski wrote:
>> Zbigniew Luszpinski wrote:
>>> Hello,
>>>
>>> many sites use lzma and xz for keeping files small to save on bandwidth cost.
>>> This is important for open source, freeware sites to keep costs low so please
>>> patch lunar tarball with this patch. For us this will be faster downloads.
>>> For me applying this patch will make developer work easier: I will not have
>>> to backport module updates anymore.
>> why not put these as plugins in the lzma and xz modules?
>>
>> Auke
> 
> Why not: xz is replacement for gz for source packages.
> xz/lzma has better compression than bz2 and gzip and decompression time much better than bz2.
> It looks it will gain more acceptance than bz2.
> Take a look at gnu.org ftp for example.
> They skipped bz2 and provide for new releases xz and gz as backward compatibility.
> Still downloading gz from their site is bandwidth waste.
> Because the most key modules comes from gnu.org it is better for us to use xz.
> Because in the future xz will have the same importance or greater than gz
> it is better to have it in core plugin and on ISO.
> As you may see in the patch xz is integrated into tar as 3rd unpacker (after gz and bz2).
> That is why the easiest way was to extend generic-unpack plugin instead of adding plugin.
> If you find generic unpack plugin to be decentralized I can write unpacker plugin
> for bzip2 and gzip modules too to replace the generic one.
> I found generic plugin supports all compressors supported by tar. Because tar supports
> xz/lzma as 3rd compressor it is still obvious to me to add support for it to generic plugin.
> lzma and xz are my prefered source packages. Next is bzip2 and gzip.
> All future module updates from me will use lzma and xz if possible.
> 
> Let me know your decision.
> I see sense of writing xz/lzma unpack plugin only when bzip2 and gzip also will be split to separate plugins.

that is the logical succession of my point, however, I really thing that 
this move should START by making a plugin in the xz/lzma modules, not 
the other way around.

stop bickering, write a plugin, it's easy, and any dev can commit it to 
moonbase. :P

Auke