On 02/24/2015 03:32 PM, Deepak Bhole wrote:
* Dominik 'Rathann' Mierzejewski
<dominik(a)greysector.net> [2015-02-24 09:29]:
> On Tuesday, 24 February 2015 at 15:09, Deepak Bhole wrote:
>> * Dominik 'Rathann' Mierzejewski <dominik(a)greysector.net>
[2015-02-24 09:04]:
>>> On Tuesday, 24 February 2015 at 14:28, Jiri Vanek wrote:
>>> [...]
>>>> There were several attempts in past like "can you please support
jdk
>>>> 7,6...in newer fedoras" and we always told no. When come speech
about "do it
>>>> on your own" suddenly many questions marks raised up.
>>>>
>>>> The last open bug is:
https://bugzilla.redhat.com/show_bug.cgi?id=1190137
>>>> the guy is willing to maintain it.
>>>
>>> Fine, so let him do it and drop the Obsoletes: tag in java-1.8.0-openjdk
>>> and its successors. You shouldn't arbitrarily block people from
>>> re-introducing an older branch of any package back into Fedora in the
>>> first place.
>>>
>>
>> We have no intention of blocking it. The reason for proposing these
>> restrictions is that the Fedora Java stack will not work with older
>> JDKs, therefore we need to make sure that it goes not get installed on
>> the system unless explicitly requested by someone who knows what they
>> are doing.
>
> Well, you do that by adding/updating (Build)Requires: in the packages
> which won't work otherwise, not by adding Obsoletes:.
>
That would generally work for most packages, but there is a new JDK
released every 2 years. This means that we would have to change the BR
and Requires for the entire Java stack (100s and 100s of packages) every
2 years, which is non-trivial.
First, we have versioned auto-requires generated during package build.
Explicit requires on java aren't usually needed. If package requires
"java > 1:1.7" then it is correct - the package can be assumed to work
with older JDK.
Secondly, it is fairly easy to add requires on "java-devel >= 1:1.8" to
packages related to build systems like ant, maven or gradle. This would
cover most cases of building Java packages using latest JDK.
--
Mikolaj Izdebski
Software Engineer, Red Hat
IRC: mizdebsk