Inkscape

LZMA source tarballs

Bug #539671 reported by Antonio Diaz Diaz
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Inkscape
Confirmed
Wishlist
Krzysztof Kosinski

Bug Description

Dear Inkscape developers,

Please, distribute lzip compressed source tarballs in addition, or instead of, the bzip2ed ones. The size savings are about 66% and 52% with respect to gzip and bzip2!

-rw-r--r-- 1 antonio users 20742550 2010-03-15 18:02 inkscape-0.47.tar.bz2
-rw-r--r-- 1 antonio users 9851744 2010-03-15 18:02 inkscape-0.47.tar.lz

Lzip also decompresses much faster than bzip2:

$ time -p bzip2 -t inkscape-0.47.tar.bz2
real 7.73
user 7.73
sys 0.00

$ time -p lzip -t inkscape-0.47.tar.lz
real 1.77
user 1.76
sys 0.01

http://www.nongnu.org/lzip/lzip.html

Thanks and regards,
Antonio.

Tags: packaging
su_v (suv-lp)
Changed in inkscape:
importance: Undecided → Wishlist
tags: added: packaging
Revision history for this message
Krzysztof Kosinski (tweenk) wrote :

It's better to use the more widely supported tar.lzma archives. The compression is also slightly better.
http://lpar.ath0.com/2009/09/25/documentation-as-an-indicator-of-code-quality/

summary: - Please, distribute lzip compressed source tarballs
+ LZMA source tarballs
Changed in inkscape:
status: New → Confirmed
Revision history for this message
Krzysztof Kosinski (tweenk) wrote :

And the most important benefit is that they can be created and decompressed directly with GNU tar using the --lzma option, e.g.

tar --lzma -xf inkscape-0.47.tar.lzma

Krzysztof Kosinski (tweenk)
Changed in inkscape:
assignee: nobody → Krzysztof Kosinski (tweenk)
Revision history for this message
Antonio Diaz Diaz (ant-diaz) wrote : Re: [Bug 539671] Re: Please, distribute lzip compressed source tarballs

Dear Krzysztof,

Krzysztof Kosinski wrote:
> It's better to use the more widely supported tar.lzma archives.

This is a very bad idea. The lzma-alone (.lzma) format is deprecated; it
lacks magic bytes and integrity checking. The efficiency of a program
can be improved; the shortcomings of a format are for ever.

> And the most important benefit is that they can be created and
> decompressed directly with GNU tar using the --lzma option, e.g.

Lzip files can be created the same way with tar 1.23:
   tar --lzip -xf inkscape-0.47.tar.lz

Or with the -I option for older versions of tar:
   tar -xf inkscape-0.47.tar.lz -Ilzip

Regards,
Antonio.

Revision history for this message
Krzysztof Kosinski (tweenk) wrote :

Hm, indeed. But lzip support is not yet available in Automake. I guess this will have to wait until a version of Automake with lzip support becomes sufficiently widespread.

Revision history for this message
Antonio Diaz Diaz (ant-diaz) wrote : Re: [Bug 539671] Re: LZMA source tarballs

Krzysztof Kosinski wrote:
> Hm, indeed. But lzip support is not yet available in Automake. I guess
> this will have to wait until a version of Automake with lzip support
> becomes sufficiently widespread.

Lzip support will be present in next version of Automake[1], but it can
take months for it to become "sufficiently widespread". In the meantime,
  if you feel the bandwidth saving is worth the trouble, a lzipped
tarball can be easily generated from the bzip2ed one with these two
commands:
   bzip2 -kd inkscape-0.47.tar.bz2
   lzip -9 inkscape-0.47.tar
[1]http://lists.gnu.org/archive/html/automake-patches/2010-02/msg00028.html

Thanks,
Antonio.

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