A new version of ruby-dbi has been released. Attaching an ebuild diff from 0.0.21-r2. Also, the setup.rb has been changed, so that needs an additional patch to install in the right directories.
Created attachment 98824 [details, diff] ruby-dbi-0.0.21-r2-to-0.1.1.diff Patch to 0.1.1
Created attachment 98825 [details, diff] ruby-dbi-0.1.1-destdir-gentoo.diff Patch for setup.rb
One more thing, sorry, the depend for odbc was wrong in 0.0.21-r2, odbc depends on ruby-odbc bug #111154, not unixODBC
Fixed. Thanks for contributing.