After trying to solve my problem with sgml with the method proposed by satai, I always get the same error: # emerge app-txt/docbook-sgml-utils Calculating dependancies /!!! (dependancies required by "app-text/docbook-sgml-utils-0.6.11-r2" [ebuild]) !!! Error calculating dependancies, please correct. This is the same error at the end of the procedure of "sgmlfix" when I try to reemerge described in http://cvs.gentoo.org/~satai/packnames.txt . Any idea ?
This looks like a portage problem.
Definitely this was a portage issue. I upgraded Portage to 1.0.47 and all works Fine. Soory for the convenience.