I’m familiar with “ruby2exe” or “OCRA” or the like, that basically zip
up your ruby interpreter, with its ruby files, then unzip it “on the
fly” when it is run.
What I’m looking for is more of an InnoSetup/NSIS installer for a ruby
app, that won’t need to unzip any new files each time is run (I noticed
that OCRA “can”  do that, but I’m looking for something a little more
developed, like you can specify icons etc.). Does anybody know of any
tools to accomplish this at all?
At the risk of answering my own question, I believe releasy does this.
Though my latest style is custom innosetup, but then bundle jruby
complete jar as an exe [launch4j] works a champ.