On Tue, Sep 12, 2017 at 04:38:57PM +0000, Andrew Katz wrote:
> My recollection is that Apache 2.0 is under Apache 2.0, also.

All explicitly-licensed licenses are going to eventually end up in
some sort of loop like this (although you could have an A → B → A…
cycle, etc.).  Doesn't it seem like we'd want to record that
information?  For licenses that are not explicitly licensed, the right
to distribute and/or modify them is going to be based on fair use,
estoppel, etc.  I'm not sure we have a way to represent that in SPDX
license expressions.

However, regardless of whether we decide to record the license for
each of our licenses, I think adding a Verbatim license to the license
list is a useful addition.  That would allow other SPDX authors/tools
to record the license of Verbatim content if *they* wanted to give the
terms under which their Verbatim license content [1] or DCO copies
[2,3] were distributed.  Then SPDX can, like other SPDX authors/tools,
decide where it wants to apply the Verbatim license without relying on
a LicenseRef.

Cheers,
Trevor

[1]: 
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/COPYING?h=v4.13#n17
[2]: 
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/process/submitting-patches.rst?h=v4.13#n429
[3]: https://developercertificate.org/

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