Re: LilyPond, LilyPond snippets and the GPL

[David Kastrup]

Hans Åberg <address@hidden> writes:

>> On 30 Oct 2019, at 18:48, Carl Sorensen <address@hidden> wrote:
>> 
>> This says to me that you can consider LSR snippets as part of the
>> code used to create music (any music, not just your specific music).
>> You can then put your specific music in a separate file, with
>> separate copyright.  And the modified LilyPond (including the LSR
>> snippets) is a derivative work of LilyPond, and has GPL rights, and
>> you would be required to share all of that code.  But the created
>> music engraving (pdf, svg, or midi) is not a derivative work of
>> LilyPond, but an output of the program lilypond, and cannot be
>> restricted by the GPL, according to the FSF.
>
> The snippets should be LGPL for being includable under other licenses,
> I believe, because the processed part remains in the output, and thus
> copyrightable. Thus, they play the same role as the Bison skeleton
> file and GCC libraries.

LSR snippets are public domain already.

-- 
David Kastrup