This would seem like a really nice addition to our repository, alas,
it'd appear that upstream's current license is invalid (GPLv3, but
code is based on Netbeans which is CDDL/GPLv2)
---------- Forwarded message ----------
From: Michel Alexandre Salim <salimma(a)fedoraproject.org>
Date: Thu, Sep 30, 2010 at 12:54 PM
Subject: Licensing query
I'm looking at Kojo with interest -- having been a teaching assistant
for several years, and a fan of both the original LOGO language and
functional programming, it seems like a really useful pedagogical
I do have some concern about the license Kojo is made available under,
however. As far as I can tell, Netbeans is dual-licensed under CDDL
and GPLv2 *without* the "or any later version" provision.
Kojo cannot be using Netbeans under the CDDL license, as it is
GPL-incompatible (ref: http://www.gnu.org/licenses/license-list.html
Yet it also cannot be using Netbeans under GPLv2, and itself be
licensed under GPLv3, because both are incompatible with each other!
From the same link:
Please note that GPLv2 is, by itself, not compatible with GPLv3.
However, most software released under GPLv2 allows you to use the terms of later
versions of the GPL as well.
Would be great if this licensing issue can be clarified. Switching to
CDDL, or to GPLv2+ (i.e. with the " or any later version" provision),
or dual-licensing under both, would seem to offer the best outcome. We
at Fedora also have a legal team that would be more than happy to help
resolve licensing issues, as we'd like to package as much interesting
FLOSS software as possible; see
for more information.
Michel Alexandre Salim
Fedora Project Contributor: http://fedoraproject.org/
Email: salimma(a)fedoraproject.org | GPG key ID: 78884778
Jabber: hircus(a)jabber.ccc.de | IRC: hircus(a)irc.freenode.net
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