http://4blcq4arxhbkc77tfrtmy4pptf55gjbhlj32rbfyskl672v2plsmjcyd.onion/cgit/gigatools.git/tree/LICENSE
If you modify a copy of the Library, and, in your modifications, a
facility refers to a function or data to be supplied by an Application
that uses the facility (other than as an argument passed when the
facility is invoked), then you may convey a copy of the modified
version:
a) under this License, provided that you make a good faith effort to
ensure that, in the event an Application does not supply the
function or data, the...