If I read golang.org/src/time/zoneinfo_read.go right, the Go project ships 
with the TZInfo file (zip).

zoneinfo.go has
//go:generate env ZONEINFO=$GOROOT/lib/time/zoneinfo.zip go run 
genzabbrs.go -output zoneinfo_abbrs_windows.go

so it seems to me that it embeds the zone info from the zip file.

And 

$ pwd
/usr/local/go/lib/time
:gthomas@redpath: /usr/local/go/lib/time
$ cat README
The zoneinfo.zip archive contains time zone files compiled using
the code and data maintained as part of the IANA Time Zone Database.
The IANA asserts that the database is in the public domain.

For more information, see
https://www.iana.org/time-zones
ftp://ftp.iana.org/tz/code/tz-link.htm
http://tools.ietf.org/html/rfc6557

To rebuild the archive, read and run update.bash.


So I'm sure the approproate release will contain the changes!


Tamás Gulácsi

2018. szeptember 18., kedd 18:53:35 UTC+2 időpontban Joe Blubaugh a 
következőt írta:
>
> How does Go deal with time zone evolution?
>
> It seems likely that the EU will stop changing clocks twice a year, 
> starting next year:
> https://www.dw.com/en/eu-to-stop-changing-the-clocks-in-2019/a-45495680
>
> How does Go update its time handling systems to accomodate these changes? 
> Will releases be made for both supported versions of the language (likely 
> Go 1.11 and Go 1.12?)?
>

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