The semantics of a list of strings in my proposal is always disjunctive, so
e.g.:
meta.license = [ "GPLv2+" "LGPLv2.1+" ];
means that the work is dual-licensed under the GPL version 2 or higher, or the
LGPL version 2.1 or higher
For the gnutls example you gave, we should specify the licenses like this:
meta.subcomponents = {
lib = {
description = "GNU TLS library";
license = "LGPLv3+";
};
cli = {
description = "GNU TLS Command-Line interface";
license = "GPLv3+";
};
};
Which means that the package consists of two subcomponents. The CLI is
available under the GPL version 3 or higher and the library under the LGPL
version 3 or higher.
or maybe like this, if we are too lazy to identify all subcomponents and their
licenses:
meta.license = "GPLv3+";
meta.subcomponents = {
lib = {
description = "GNU TLS library";
license = "LGPLv3+";
};
};
Which means that the whole package is available under the GPL version 3 or
higher, except for the library subcomponent which is available under the LGPL
version 3 or higher. (we even can have disjunctive licenses on subcomponents
with this approach)
What do you think?
-----Original Message-----
From: [email protected] on behalf of Ludovic Courtès
Sent: Mon 2/22/2010 4:24 PM
To: [email protected]
Subject: [Nix-dev] Re: Specifying licenses on Nix packages
Hello Sander,
What are you replying to?
"Sander van der Burg - EWI"
<[email protected]> writes:
> What I need now is consensus about license identifiers. If this
> consensus is ok to use, then I'll start modifying the incorrect
> license attributes when I encounter them.
Someone added a link to this page on the wiki:
<https://fedoraproject.org/wiki/Licensing#SoftwareLicenses>. The nice
thing is that it contains short names for many licenses, so it could
serve as a reference.
> The only thing I don't know yet is what Hydra does when the
> meta.license attribute is a list of strings instead of a list.
Sometimes one wants an 'and' (e.g., GnuTLS is LGPLv2+ but the
'gnutls-cli' program is GPLv3+), sometimes an 'or' (software that is
dual-licensed). And that's for the simplest cases. :-)
Thanks,
Ludo'.
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