Re: [gentoo-dev] Ranged licenses

[Ciaran McCreesh <ciaran.mccreesh@blueyonder.co.uk>]

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On Wed, 28 Nov 2007 18:40:27 -0800
"Robin H. Johnson" <robbat2@gentoo.org> wrote:
> I'm for ranged licenses, but I think attention needs to be paid to the
> syntax. The postfix [] form does nicely separate the version
> information from the actual license name (moreso than the traditional
> CPV atom), but the LGPL[>=2&<3] example looks to be overloading it,
> when we already have AND/OR at the higher level.
> LICENSE="|| ( Eclipse ( LGPL[>=2] LGPL[<3] ) )"
> Which is, Eclipse OR (LGPL v2 up to, but not including LGPLv3).

The ( ) form means something else for package dependencies, and so can't
be used for ranged dependencies. In particular:

    ( >=foo/bar-3 <foo-bar/4 )

will (correctly) be matched if both foo/bar-5 and foo/bar-1 are
installed, which can happen due to slots.

-- 
Ciaran McCreesh

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