Re: [gentoo-dev] EAPI 6 portage is out!

[Daniel Campbell <zlg@gentoo.org>]

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On 11/18/2015 01:54 AM, Raymond Jennings wrote:
> On Wed, Nov 18, 2015 at 1:25 AM, Alexander Berntsen
> <bernalex@gentoo.org <mailto:bernalex@gentoo.org>> wrote:
> 
> On 18/11/15 08:25, Ulrich Mueller wrote:
>> - If you mix stable and unstable then you are by definition an 
>> advanced user, who will be able to cope with the situation. :)
> This attitude is shitty, and I am willing to wager a really big
> bunch of users fall into this category.
> 
> 
>> I second the motion.
> 
>> I can vouch for myself as such a user who often uses unstable
>> packages to get new features or dodge bugs in the stable
>> versions.
> 
>> As a general default, though, I stick with stable packages.
> 
>> Taking an occasional unstable package in an otherwise stable
>> system (and obeying any revbump directives provoked by
>> dependencies) is a legal operation that is actually supported by
>> commit rules that prohibit stable versions from depending on
>> unstable versions of dependencies.
> 
>> Why would that policy exist if mixing stable and unstable were
>> unsupported?
> 

Mixing keywords is generally unsupported because of the sheer amount
of testing and possible combinations there are. In many cases, you can
get away with it and it's easy enough to debug, but if you end up in
package.use hell and/or have a bunch of blockers, you're kinda on your
own.

The policy exists to prevent developers from causing users to fall
into the trap of mixing keywords. Stable packages depending on testing
packages means they'll have to add entries to package.accept_keywords,
which can greatly complicate maintenance of a Gentoo system. Someone
willing to do that work *is* advanced, even if it's only a few
packages. "Advanced" doesn't have to mean "can build an LFS system in
an evening". :)

In the case of this recent change, worst case scenario you'll need to
add portage to your p.accept_keywords until it's stable. If you want
to simplify things, choose arch or ~arch without mixing.

In the Gentoo spirit, though, users are free to do with their systems
whatever they want; mixing keywords is one of the cases where you get
to keep the pieces, however.

> I don't think EAPI 6 is *that* shiny, that we need to start using
> it prior to stable Portage supporting it. It's a potential mess for
> a huge portion of our users.
> 
> 
> That said, I'd like to extend my thanks to Micha? for working on
> this.
> 
> 

- -- 
Daniel Campbell - Gentoo Developer
OpenPGP Key: 0x1EA055D6 @ hkp://keys.gnupg.net
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