On Sat, 31 Dec 2011, Ian Wild wrote:
Actually it says Trac either needs to switch to Apache license or
cannot use any code from the fork. This is the opposite of what you say.
"Carrying changes back and forth will still allow the overall package to
be delivered under a permissive license. It is simply that parts will be
BSD and parts will be ALv2."
Where does that say that Trac would need to switch to an Apache license
to use code licensed under ALv2?
When a file-based license situation is impossible, then you will need to
stick to one license. As BSD can become ALv2, but ALv2 cannot become BSD,
the Trac product must be ALv2 when code is copied.
Even when really doing file-exact licensing (and believe me, nobody really
wants this), each copied patch would change one more file into ALv2 - in
the end everything would be ALv2.
The is only one situation, where dual licensing works: When all code is
released under both licenses.
As Felix already said, maintaining license on file level is impossible
and also would prevent structures or functions to be copied - normally
patches do not consist of singular files.
Assuming the Trac project wants to take Apache Bloodhound code, why is
shipping the Apache v2 license file and adding an appropriate
attribution in the form of a boilerplate to any file that contains
Apache licensed code 'impossible'?
Ok. It is not "impossible". It is "undoable". A programmer is no lawyer
and nobody I know doing software development in his free time wants to
care for this. The result would be that after probably one year of copying
code the license situation would be so confused, that nobody knows which
files are licensed how. Again the result would be to switch everything to
ALv2.
I know the trouble I had with JOSM to find out whether the code is
"GPLv2+" or "GPLv2 only", which is a major difference and this is only one
license.
Ciao
--
http://www.dstoecker.eu/ (PGP key available)
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