* Carl-Daniel Hailfinger c-d.hailfinger.devel.2006@gmx.net [070412 16:08]:
Current decompression code and makefiles in the v2 codebase use the lzma sdk. If you move the makefiles to p7zip, you have to rewrite the decompression code. That is feasible (you can even make the decompression code handle both archive formats), but will need some time to make sure nothing breaks. The main difference between the sdk and p7zip is in the header format, and there it is just the absence of one header field in p7zip, so heuristics for format recognition should work.
Can you verify that the lzma code in v3 does the right thing? Then we could use it for v2, too. Having an extra dependency on a compressor that is generally unavailable sucks big time.