git-filter-repo/COPYING
Elijah Newren 47406a6cc0 filter-repo: re-license
When I wrote git_fast_filter.py, I was unaware of and did not forsee
libgit2.  So, although the license said the project could be used under
whatever license git.git was, there was still a potential barrier for
usage by libgit2.  I'm not sure if libgit2 will ever want to use
filter-repo, but I don't want the barrier there and I would like to
avoid a repeat of this problem.  (Also, since filter-repo is for the
most part a one-shot usage tool, I doubt that the normal copyleft
provisions could provide much value.)

MIT is widely used, compatible with just about everyting, and is
preferred by Palantir (my current employer) for open source
contributions.  So, I contacted all other contributors (Jim is still at
Sandia) and got permission to relicense.

Signed-off-by: Elijah Newren <newren@gmail.com>
2019-07-16 13:15:52 -07:00

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git-filter-repo itself and most the files in this repository (exceptions
noted below) are provided under the MIT license (see COPYING.mit).
The usage of the MIT license probably makes filter-repo compatible with
everything, but just in case, these files can also be used under whatever
open source license[1] that git.git or libgit2 use now or in the future
(currently GPL[2] and GPL-with-linking-exception[3]). Further, the
examples (in contrib/filter-repo-demos/ and t/t9391/) can also be used
under the same license that libgit2 provides their examples under (CC0,
currently[4]).
Exceptions:
- The test harness (t/test-lib.sh, t/test-lib-functions.sh) is a slightly
modified copy of git.git's test harness (the difference being that my
copy doesn't require a built version of 'git' to be present). These
are thus GPL2 (see COPYING.gpl), and are individually marked as such.
[1] ...as defined by the Open Source Initiative (https://opensource.org/)
[2] https://git.kernel.org/pub/scm/git/git.git/tree/COPYING
[3] https://github.com/libgit2/libgit2/blob/master/COPYING
[4] https://github.com/libgit2/libgit2/blob/master/examples/COPYING