On Mon, Sep 5, 2016 at 5:20 AM, Alexis Ballier <aball...@gentoo.org> wrote:
> On Fri, 2 Sep 2016 19:19:16 +0200
> Kristian Fiskerstrand <k...@gentoo.org> wrote:
>
>> On 09/02/2016 07:17 PM, Rich Freeman wrote:
>> > On Fri, Sep 2, 2016 at 12:53 PM, Alexis Ballier
>> > <aball...@gentoo.org> wrote:
>> >> On Fri, 2 Sep 2016 18:13:20 +0200
>> >> Kristian Fiskerstrand <k...@gentoo.org> wrote:
>> >>
>> >>> Hi Devs,
>> >>>
>> >>> I'm wondering whether it wouldn't make sense to require eclasses
>> >>> (or strongly encourage) to include an explicit list of EAPIs it
>> >>> has been tested for in order to ease testing when introducing new
>> >>> EAPIs.
>> >>>
>> >>> We have seen some issues already with EAPI6 bump related to
>> >>> get_libdir and people updating EAPI in ebuild without properly
>> >>> testing the inherited eclasses. having a whitelist in place and
>> >>> die if eclass is not updated to handle it solves it.
>> >>>
>> >>> Thoughts? comments? cookies? threats?
>> >>>
>> >>
>> >> Never liked to wait for a whole eclass update for a new eapi when I
>> >> only use a couple functions from it that I have tested when
>> >> updating an ebuild.
>> >>
>> >
>> > I think the idea is a sound one though.  And there is no reason it
>> > couldn't be tweaked to give the option to set it at the function
>> > level and not the eclass level.  This is also an argument for
>> > simplifying eclasses when it makes sense (I realize this will never
>> > be 100%).
>>
>> If specific functions can be useful there is also a case to be made
>> for refactoring of the code
>>
>
>
> Well, let's say we have an eapi that introduces usedeps and
> src_configure. Let's say we have an ebuild with a few built_with_use ||
> die calls that could benefit from usedeps. Let's call this ebuild vlc.
> Let's say this ebuild inherits an eclass for updating the icon cache
> and redefines all other ebuild phases. Let's call this eclass gnome2.
> Let's assume this eclass is widely used by tens of packages that do
> actually use the exported functions from it. It makes a lot of sense to
> ban this new eapi in this eclass until it is ported. However, porting
> it takes months and we are stick with those built_with_use || die calls.
>
> Of course, the best solution is to port the eclass. The second
> option is to drop the inherit from the ebuild and call the relevant
> functions by defining ebuild phases. This duplicates a bit of code but
> works well. However, it seems to me it is more practical to have an
> eclass not dying and letting ebuild writers deal with their crap if
> something goes wrong.
>

I think this is a good argument for keeping utility functions and
phase functions in separate eclasses, regardless of EAPI gating.

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