[tz] Brasil DST changes

Brian Inglis Brian.Inglis at SystematicSw.ab.ca
Tue Jan 15 14:27:18 UTC 2019

On 2019-01-14 16:42, Paul Eggert wrote:
> On 1/14/19 3:20 PM, Dedeco Balaco via tz wrote:
>> Who is responsible for this kind of information or update?
> You're responsible for installing Debian's time zone updates and for setting
> your time zone correctly. Debian is responsible for getting time zone data from
> tzdb. We're responsible for publishing the best data we can.
> It's not clear from your email where the problem is in that chain, so it sounds
> like you may need to do some detective work to isolate the problem. You can
> start by looking here:
> https://github.com/eggert/tz/blob/master/NEWS
> and map its release numbers to what's installed on your system now.

With distros, tzdata releases available depends how up to date the maintainers
keep the distro, and the package maintainers keep the tzdata package; which base
distro release you run e.g. 9 Stretch, 10 Buster; which repos you have available
on your selected mirror(s) and defined in your /etc/apt/sources.list e.g.
debian-updates, debian-proposed-updates, debian-backports,
debian-security/updates; although if a newer release is available for your
distro, the currently installed release should be able to be upgraded using your
preferred package manager e.g. as I have a package mirrors with debian-updates
repo available, and as I have added debian-updates repos to my package sources,
I am up to date:

	$ apt list -a tzdata
	Listing... Done
	tzdata/stable-updates,stable-updates,stable-updates,now 2018i-0+deb9u1
	all [installed]
	tzdata/stable,stable,stable 2018g-0+deb9u1 all

	$ sudo apt install tzdata=2018i-0+deb9u1
	Reading package lists... Done
	Building dependency tree
	Reading state information... Done
	tzdata is already the newest version (2018i-0+deb9u1).
	0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

SImilarly on Ubuntu 16.04 Xenial:

	$ apt list -a tzdata
	Listing... Done
	tzdata/xenial-updates,xenial-security,now 2018i-0ubuntu0.16.04
	all [installed]
	tzdata/xenial-updates,xenial-security 2018g-0ubuntu0.16.04 all
	tzdata/xenial-updates,xenial-security 2016j-0ubuntu0.16.04 all
	tzdata/xenial,xenial,xenial 2016d-0ubuntu0.16.04 all

where the base release is much older than Debian, and more recent distro release
18.04 Bionic is only at 2018d, and 18.10 Cosmic at 2018e. Other distros may
offer only older package releases e.g. Fedora whereas CentOS.

Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada

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