We're currently in the process of setting up the Sigil build to produce installable artifacts. The main challenge left to solve is how to make an eclipse update site.
If you feel like living on the edge you can install sigil from a local snapshot update site from the current svn tree (instructions below). If you do this then because the version qualifier is .SNAPSHOT then to do an update need to uninstall the sigil plugins from eclipse and then reinstall them.
http://svn.apache.org/repos/asf/felix/trunk/sigil sigil-trunk cd sigil-trunk ant dist |
Then add an update site to eclipse under file:/path-to/sigil-trunk/site.