Dependencies for samba4?

[Ng Oon-Ee]

I'm using Arch Linux, and maintain a PKGBUILD (Arch terminology for a
set of instructions to produce a package) for samba4.

Recently some users reported that my PKGBUILD did not work, after some
testing I realized that samba4 requires docbook-xsl (which samba3 did
not).

Is there a list somewhere of dependencies for samba4? The HOWTO on
wiki.samba.org suggests acl, xattr, blkid, gnutls, readline, and python
are dependencies, but docbook-xsl is not mentioned. Perhaps its not a
'hard' dependency since man pages aren't normally considered integral,
but compiling tdb still fails even though the libxlst test returns 'no'.

For references, here's a user's build log.
http://aur.pastebin.com/FmsMLh7A

Line 14 says xsltproc isn't found, but line 51 shows build failure
(doesn't turn up when docbook-xsl is installed).