I'd rather provide compilation time options for that. Variants are:
1. ./configure
--with-compressor=bzip2=/etc/alternatives/bzip2-filter,gzip=...
2. ./configure --with-bzip2=/etc/alternatives/bzip2-filter --with-gzip=...
3. ./configure BZIP2_PROGRAM=/etc/alternatives/bzip2-filter GZIP_PROGRAM=...
All of this is only being contemplated because of lbzip? No one has
ever wanted "alternative" implementations of any other compressor, to my
knowledge. Seems a painful increase of complexity.
So how about working (Sergey, I don't mean you) on making lbzip an
actual replacement for bzip? I know that isn't being done now, but that
doesn't it couldn't be done. Free software and all that.
Finally, does lbzip offer any advantages over xz
(http://tukaani.org/xz)? Which already compresses better and
decompresses faster than bz2, in general.
karl
