* Licensing
@ 2017-03-07 18:42 Julius Schmidt
2017-03-07 18:49 ` [9front] Licensing Kurt H Maier
0 siblings, 1 reply; 2+ messages in thread
From: Julius Schmidt @ 2017-03-07 18:42 UTC (permalink / raw)
To: 9front
There has been a lot of confusion on this subject. Implicitly (and
sometimes explicitly) it has been assumed that 9front uses one of two
licensing schemes:
1. LPL license everything
2. LPL license the original code, MIT any 9front additions
[shit like python is obviously excluded]
The latter would be my preferred solution. It's a bit ugly (and legally
dubious) in files that draw from both sources, but I think it's the best
solution for anything we created from scratch.
I propose we settle this matter once and for all by replacing
/lib/legal/NOTICE with the following.
==== snip =====
Plan 9 from Bell Labs is provided under the terms of the Lucent Public License,
Version 1.02, reproduced in the file /lib/legal/lpl.
Any additions or changes (as recorded in Mercurial history) made by 9front are provided
under the terms of the MIT License, reproduced in the file /lib/legal/mit.
The following exceptions apply:
1. No right is granted to create derivative works of or
to redistribute (other than with the Plan 9 Operating System)
the screen imprinter fonts identified in subdirectory
/lib/font/bit/lucida and printer fonts (Lucida Sans Unicode, Lucida
Sans Italic, Lucida Sans Demibold, Lucida Typewriter, Lucida Sans
Typewriter83), identified in subdirectory /sys/lib/postscript/font.
These directories contain material copyrights by B&H Inc. and Y&Y Inc.
2. The printer fonts identified in subdirectory /sys/lib/ghostscript/font
are subject to the GNU GPL, version 2, reproduced in the file /lib/legal/gpl.
3. The ghostscript program in the subdirectory /sys/src/cmd/gs is
covered by the Aladdin Free Public License, reproduced in the file
/lib/legal/afpl.
4. The Python programming language in the subdirectories /sys/src/cmd/python and
/sys/lib/python is covered by the Python Software Foundation License, reproduced
in the file /sys/src/cmd/python/LICENSE.
5. The Mercurial version control system in the subdirectories /sys/src/cmd/hg and
/sys/lib/mercurial is covered by the GNU GPL, version 2, reproduced in
the file /lib/legal/gpl.
Other, less notable exceptions are marked in the file tree with
COPYING, COPYRIGHT, or LICENSE files.
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