Re: F29 System Wide Change: The tzdata transition to 'vanguard' format

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Is this going to be backward compatible or not? rubygem-tzinfo is using
tzdata as data source, so I wonder if any action is required.


V.


Dne 22.5.2018 v 16:24 Jan Kurik napsal(a):
> = Proposed System Wide Change: The tzdata transition to 'vanguard' format =
> https://fedoraproject.org/wiki/Changes/TZDATA-VANGUARD
>
>
> Owner(s):
>   * Patsy Franklin <pfrankli at redhat dot com>
>
>
> As of tzdata-2018e, the upstream will now default to using the
> 'vanguard' data format including negative DST offsets.  As a
> fall-back, the 'rearguard' data format is still available on F28, F27
> and F26.
>
>
>
> == Detailed description ==
> tzdata-2018e defaults to the 'vanguard' data format.  This format
> includes the POSIX compliant implementations of negative DST offsets
> which have been an issue for both Java and ICU parsers. We plan to
> transition to this default format in F29.
>
>
> == Scope ==
> * Proposal owners:
> Implement the proposal.
>
> * Other developers:
> Developers need to ensure that their packages are able to correctly
> parse and/or build with the new tzdata 'vanguard' format.
>
> * Release engineering:
> The tzdata maintainer will ensure that the package builds and passes
> all tests on F29.
> RelEng ticket: https://pagure.io/releng/issue/7510 #7510
>
> * Policies and guidelines:
> The policies and guidelines do not need to be updated.
>
> * Trademark approval:
> Not needed for this change
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