Quick instructions:
===================
1) install MacPorts from source into $MP_PREFIX (e.g. "/opt/local-x11")
2) add MacPorts to your PATH environement variable, for example:
$ export PATH="$MP_PREFIX/bin:$MP_PREFIX/sbin:$PATH"
3) add 'ports/' subdirectory as local portfile repository:
$ sudo sed -e '/^rsync:/i\'$'\n'"file://$(pwd)/ports" -i "" "$MP_PREFIX/etc/macports/sources.conf"
4) index the new local portfile repository:
$ (cd ports && portindex)
5) add default variants for x11-based package to MacPorts' global variants:
$ sudo sed -e '$a\'$'\n''+x11 -quartz -no_x11 +rsvg +Pillow -tkinter +gnome_vfs' -i "" "$MP_PREFIX/etc/macports/variants.conf"
6) install required dependencies:
$ sudo port install inkscape-packaging
7) compile inkscape, create app bundle and DMG:
$ LIBPREFIX="$MP_PREFIX" ./osx-build.sh a c b -j 5 i p -s d
8) upload the DMG.