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hypermail-project / hypermail

Hypermail is a free (GPL) program to convert email from Unix mbox format to html.
http://www.hypermail-project.org/
GNU General Public License v2.0
156 stars 73 forks source link

GPL version #70

Closed bgermann closed 3 years ago

bgermann commented 3 years ago

Is the general hypermail license tied to specific GPL version(s)? I cannot find any GPL version information in the general information, only for some specific files. I would be interested in using abook under GPLv3, which contains a modified getname.c from your project (v2.1.1 to 2.1.5) and claims it is GPLv2.

jkbzh commented 3 years ago

Hi, feel free to reuse that part of the code in your own project. I've to take time to look at the licenses and update them. For the copyleft you put, could you rather point at the github repository https://github.com/hypermail-project/hypermail/ ? I don't know how long the hypermail.org site will continue to be on.
Thanks for the heads-up!

jkbzh commented 3 years ago

hi @bgermann to give a more exact reply, hypermail's files state they are copyrighted "under GPLv2 or any later version". This makes it forward compatible with the terms under GPLv3. As the GNU Licenses page states:

Please note that GPLv3 is not compatible with GPLv2 by itself. However, most software released under GPLv2 allows you to use the terms of later versions of the GPL as well. When this is the case, you can use the code under GPLv3 to make the desired combination.