Note about nip2: nip2 and vips are often but not always released
together by upstream.  Their major and minor versions are usually
synchronized, but their patch versions are often not.  Whenever a new
version of vips and nip2 are uploaded together, always be sure to
update the build dependency on vips to the correct version.  This will
prevent the new nip2 from compiling against the older vips.  Although
doing so should generally be harmless, we still want to avoid it so we
are building consistently with how upstream builds.

 -- Jay Berkenbilt <qjb@debian.org>, Sat, 13 Apr 2013 21:34:51 -0400