Johannes Schaefer wrote:
> 
> I don't know how to proceed:
> - Is such an installer of general interest?

I would think so.

Does the user needs any pre-requisites?

> - Who may help "polish" it (e.g. uninstall, icons, ...)?

Anyone.

> - How to commit? The script is easily committed but what about the .exe?

There are probably past discussions about how to handle
this sort of thing on the ASF legal-discuss mail list
http://apache.org/foundation/mailinglists.html#foundation-legal

I am no expert, so the following are some quick thoughts.
I am away for a while so hopefully other PMC members will help.

I have some concerns about where in our SVN it should live,
and how to distribute it. The user needs to see the license
files for Forrest and our NOTICE file where some supporting
products require prominent attribution.

The script should go in our main trunk SVN. 
 
The exe probably should go on the distribution mirrors 
alongside our release. If so then it would need to
follow our normal release process.

Perhaps look at how some other ASF projects manage and
distribute such installers.

-------

I gather that you or another Windows-based committer
runs the script to generate the .exe using a certain
version of NSIS.

Obviously the script would need the standard Apache License header.
The exe should have a commit message saying which version of
NSIS and Forrest it was built with.

Check your SVN properties too for both *.nsi (as normal
native text file) and *.exe (needs executable property).
The former is yet not in the list of auto-properties
provided for ASF committers local config [3]. 

[3] http://apache.org/dev/version-control.html#https-svn-config

-David