unsquashfs xz compression

[gregg_a_g]

Is there a reason there is no "XZ" compression/decompression support
in the "squashfs-tools-4.x" extension?  When I use "unsquashfs -v" I get

unsquashfs version 4.2 (2011/02/28)
copyright (C) 2011 Phillip Lougher <phillip@lougher.demon.co.uk>

which I thought had "XZ" included....



Comments:       This extension contains mksquashfs and unsquashfs.
      It uses zlib, no LZO/XZ support is included.
      To make a squashfs image of a directory:
      # mksquashfs directory/ filename.extensionname
      This extension is PPI compatible.
      Defaults to 4096 block size used by TC extensions

[gerald_clark]

Probably because the TC programmers chose to use zlib with 4K blocks.

[gregg_a_g]

Thanks, Gerald.  So if I have an archive that I want to "look inside of" that uses "XZ" compression, I'll have to rebuild unsquashfs?

[curaga]

It would add an unnecessary dep to squashfs-tools (liblzma). Yes, a rebuild with the xz and xz-dev extensions should work.

[gregg_a_g]

So, I rebuilt squash/unsquash and was able to read the archive I wanted to look at.  What do you mean when you
say it would "add an unnecessary dep to squashfs-tools"?

Thanks again!

[curaga]

As we only use the deflate compression, having xz as a dep would be unnecessary for most uses.