xz vs. lzma

[Paweł Zuzelski]

xz has replaced lzma, "Provides/Obsoletes" it and install symlink
lzma that points to xz. Unfortunatelly these programs are not
compatibile. xz is unable to decompress file compressed with lzma.

It breaks build process of some packages (see
http://buildlogs.pld-linux.org/index.php?dist=th&arch=athlon&ok=0&name=telak&id=eae6a73b-58d5-4567-8085-18102acbaa87)

Is it bug in xz that can be easily fixed? If no (imo) xz must not
Obsoletes/Provides lzma and it should be possible to install xz and
lzma on the same system.

-- 
Regards,
Paweł Zuzelski