[gentoo-dev] Re: EAPI-1 (or >1, perhaps) Proposal: AND Dependencies

[Steve Long <slong@rathaus.eclipse.co.uk>]

Ciaran McCreesh wrote:
> Luca Barbato <lu_zero@gentoo.org> wrote:
>> Ciaran McCreesh wrote:
>> > Paludis allows users to do some-cat/foo[>=4.0&<4-3] and
>> > some-cat/foo[=4.1|=4.2|=4.3] . The syntax isn't particularly pretty,
>> > but it's cleaner than requiring duplication of the cat/pkg. Combined
>> > with :slot deps it should give you everything you need.
>> 
>> Seems not bad, do you have plans to refine it before proposing it for
>> the pms?
> 
> Well, I'm happy with it like that...
> 
but as you said, it ain't pretty: what about simply replacing [] with ()?
&& to match || in portage and logical AND in C etc. seems wise too.
Allow both if you *have* to maintain backwards-compatibility, but it makes
it more like portage syntax, which folks are used to:
some-cat/foo(>=4.0&&<4.3) seems clean, for this example.

To my mind, | seems like a good second-level operator, so one could have:
cat-foo/bar(~3.6||~3.7|>=4.0&&<4.3|>=5.1) while still using the operators
everyone is used to for most things.

(& makes no sense in that context, of course.)


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