I’ve put a few of the reports from pkgsrc builds on DragonFly out.  They’re all using pkgsrc-2010Q1, on i386/DragonFly 2.6, i386/DragonFly 2.7, and x86_64/DragonFly 2.7.  The links in the reports go to the errors that caused each package to not build.  If you happen to see something that has an easy fix, or that you really need to have working, please submit a fix.