On Sat, Oct 6, 2018 at 1:33 PM KuboF Hromoslav <kubof.hromoslav(a)gmail.com>
wrote:
The material is under CC BY 4.0 but Wikisource is
using CC BY-SA 3.0. (so
the problem is the version number) The argument is, that CC licenses are
"forward compatible" but not "retro compatible". So it is OK to put
CC BY
3.0 material into CC BY 4.0 repository, but not the opposite.
In the meantime I have found, that another Wikisources are collecting
materials under CC BY 4.0, like
https://en.wikisource.org/wiki/Category:CC_attribution_4.0
Note that Wikipedia uses many images under a variety of licenses, including
CC BY 4.0 and fair use. An entire Wikipedia is not covered under any single
license. Likewise, an entire Wikisource is not covered under a single
license;
https://en.wikisource.org/wiki/The_Grant_Shapps_Affair_Is_a_Testament_to_Wi…
is covered under the CC-BY-4.0 independently of any license the rest of
Wikisource is covered by. It's mere aggregation, not making a derivative
work.