[swift-corelibs-dev] TimeZone database

Thu Jul 6 18:08:25 CDT 2017

We have a list of required packages in our README.md - we could add tzdata to that.

- Tony

> On Jul 6, 2017, at 1:48 PM, Youming Lin via swift-corelibs-dev <swift-corelibs-dev at swift.org> wrote:
> 
> Thanks for pointing me to the package. Turns out it was intentional:
> https://github.com/docker-library/official-images/issues/2863 <https://github.com/docker-library/official-images/issues/2863>
> 
> A caveat to Swift developers using official Docker Ubuntu images in the future.
> 
> Youming Lin
> IBM Cloud, Swift at IBM, Kitura developer
> Austin, TX
> GitHub: @youming-lin
> 
> <graycol.gif>Simon Evans ---07/06/2017 03:20:57 PM---Looks like timezone files are in the ‘tzdata’ package. Maybe it got uninstalled or was never install
> 
> From: Simon Evans <si at si.org>
> To: Youming Lin <ylin at us.ibm.com>
> Cc: Alex Blewitt <alblue at apple.com>, Ian Partridge <ian at poncho.org.uk>, swift-corelibs-dev <swift-corelibs-dev at swift.org>
> Date: 07/06/2017 03:20 PM
> Subject: Re: [swift-corelibs-dev] TimeZone database
> 
> 
> 
> 
> Looks like timezone files are in the ‘tzdata’ package. Maybe it got uninstalled or was never installed as part of the base. An ‘apt-get install tzdata’ might fix it.
> 
> Simon
> On 6 Jul 2017, at 20:20, Youming Lin via swift-corelibs-dev <swift-corelibs-dev at swift.org <mailto:swift-corelibs-dev at swift.org>> wrote:
> That's odd. Maybe my ubuntu:16.04 image is outdated or something, but here are my outputs:
> 
> ylin at youming-mbpr:~/Swift/Kitura-Markdown$ docker run -it --rm ubuntu:16.04 find /usr -name zone.tab
> ylin at youming-mbpr:~/Swift/Kitura-Markdown$ docker run -it --rm ubuntu:14.04 find /usr -name zone.tab
> /usr/share/zoneinfo/zone.tab
> 
> The file is found in ubuntu:14.04 but not in ubuntu:16.04.
> 
> Here are my images:
> 
> ylin at youming-mbpr:~/Swift/Kitura-Markdown$ docker images
> REPOSITORY TAG IMAGE ID CREATED SIZE
> ubuntu 16.04 7b9b13f7b9c0 4 weeks ago 118MB
> ubuntu 14.04 132b7427a3b4 4 weeks ago 188MB
> 
> Thanks,
> 
> Youming Lin
> IBM Cloud, Swift at IBM, Kitura developer
> Austin, TX
> GitHub: @youming-lin
> 
> <graycol.gif>Alex Blewitt ---07/06/2017 01:42:22 PM---It looks like it's /usr/share/zoneinfo on all Ubuntu versions: alblue.local[~]$ docker run -it --rm
> 
> From: Alex Blewitt <alblue at apple.com <mailto:alblue at apple.com>>
> To: Tony Parker <anthony.parker at apple.com <mailto:anthony.parker at apple.com>>
> Cc: Youming Lin <ylin at us.ibm.com <mailto:ylin at us.ibm.com>>, Ian Partridge <ian at poncho.org.uk <mailto:ian at poncho.org.uk>>, swift-corelibs-dev <swift-corelibs-dev at swift.org <mailto:swift-corelibs-dev at swift.org>>
> Date: 07/06/2017 01:42 PM
> Subject: Re: [swift-corelibs-dev] TimeZone database
> Sent by: alblue at apple.com <mailto:alblue at apple.com>
> 
> 
> 
> 
> It looks like it's /usr/share/zoneinfo on all Ubuntu versions:
> 
> alblue.local[~]$ docker run -it --rm ubuntu:14.04 find /usr -name zone.tab
> /usr/share/zoneinfo/zone.tab
> alblue.local[~]$ docker run -it --rm ubuntu:16.04 find /usr -name zone.tab
> /usr/share/zoneinfo/zone.tab
> alblue.local[~]$ docker run -it --rm ubuntu:16.10 find /usr -name zone.tab
> /usr/share/zoneinfo/zone.tab
> 
> This is the same that's coming from CFTimeZone.c:
> 
> https://github.com/apple/swift-corelibs-foundation/blob/2611dcd0d9b91fecace537838294bd85f0220503/CoreFoundation/NumberDate.subproj/CFTimeZone.c#L36-L39 <https://github.com/apple/swift-corelibs-foundation/blob/2611dcd0d9b91fecace537838294bd85f0220503/CoreFoundation/NumberDate.subproj/CFTimeZone.c#L36-L39>
> 
> Is it possible that the MacOS header is being included and defining TZDIR before the CFTimeZone.c file is compiled?
> 
> Alex
> On 6 Jul 2017, at 19:22, Tony Parker via swift-corelibs-dev <swift-corelibs-dev at swift.org <mailto:swift-corelibs-dev at swift.org>> wrote:
> 
> Is the path to zoneinfo different on the Ubuntu docker image?
> 
> - Tony
> On Jul 6, 2017, at 9:36 AM, Youming Lin <ylin at us.ibm.com <mailto:ylin at us.ibm.com>> wrote:
> We were seeing this on Travis too. Specifically, on a Travis matrix build using Swift 3.1.1 on a Ubuntu 16.04 docker image running inside a Travis 14.04 VM.
> 
> The issue was specific to the Ubuntu 16.04 docker image; when I tested in Ubuntu 16.04 OS as a guest VM, the issue went away.
> 
> Thanks,
> 
> Youming Lin
> IBM Cloud, Swift at IBM, Kitura developer
> Austin, TX
> GitHub: @youming-lin
> 
> <graycol.gif>Tony Parker via swift-corelibs-dev ---07/06/2017 10:31:15 AM---Yes, we’re discussing this one internally too and trying to figure out what the right answer is. May
> 
> From: Tony Parker via swift-corelibs-dev <swift-corelibs-dev at swift.org <mailto:swift-corelibs-dev at swift.org>>
> To: Ian Partridge <ian at poncho.org.uk <mailto:ian at poncho.org.uk>>
> Cc: swift-corelibs-dev <swift-corelibs-dev at swift.org <mailto:swift-corelibs-dev at swift.org>>
> Date: 07/06/2017 10:31 AM
> Subject: Re: [swift-corelibs-dev] TimeZone database
> Sent by: swift-corelibs-dev-bounces at swift.org <mailto:swift-corelibs-dev-bounces at swift.org>
> 
> 
> 
> 
> Yes, we’re discussing this one internally too and trying to figure out what the right answer is. Maybe the best solution for now is to find a good mechanism to check the underlying version of the OS and split it out into a function as you suggest.
> 
> - Tony
> On Jul 6, 2017, at 7:37 AM, Ian Partridge via swift-corelibs-dev <swift-corelibs-dev at swift.org <mailto:swift-corelibs-dev at swift.org>> wrote:
> 
> Good shout Simon, you are right. I'm on Sierra. Compare and contrast:
> 
> /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/tzfile.h
> #define TZDIR "/usr/share/zoneinfo"
> 
> /Applications/Xcode-beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/tzfile.h
> #define TZDIR "/var/db/timezone/zoneinfo"
> 
> so I guess if I installed the High Sierra beta it would work OK.
> 
> I hacked CF to force it to use /usr/share/zoneinfo and TestFoundation
> is much happier, but that's not a solution.
> 
> On 6 July 2017 at 15:20, Simon Evans <si at si.org <mailto:si at si.org>> wrote:
> Ian
> 
> I also saw this error, I think its because the TZDIR is different in the headers shipped with Xcode 9. Maybe the location of the timezone directory was moved between Sierra and High Sierra. What version of macOS are you testing on?
> 
> If it has indeed moved between 10.12 and 10.13 it may require a runtime version check to dynamically return TZDIR.
> 
> Simon
> On 6 Jul 2017, at 15:09, Ian Partridge via swift-corelibs-dev <swift-corelibs-dev at swift.org <mailto:swift-corelibs-dev at swift.org>> wrote:
> 
> Hi,
> 
> I'm seeing quite a lot of tests failing when running the
> TestFoundation target in Xcode. The failures are timezone related.
> Most simply, the code
> 
> let timeZone = TimeZone(abbreviation: "GMT")
> 
> is returning nil.
> 
> Walking through the CF code which sets things up, it seems to be
> trying to read the timezone database from
> /var/db/timezone/zoneinfo/zone.tab which doesn't exist on my macOS
> system.
> 
> /usr/share/zoneinfo/zone.tab is there and seems to be the right
> location (?), but CF is picking up TZDIR from tzfile.h which says:
> 
> #define TZDIR "/var/db/timezone/zoneinfo"
> 
> Any thoughts? I feel like I'm missing something obvious and have gone
> too far down the rabbit hole.
> 
> --
> Ian Partridge
> _______________________________________________
> swift-corelibs-dev mailing list
> swift-corelibs-dev at swift.org <mailto:swift-corelibs-dev at swift.org>
> https://lists.swift.org/mailman/listinfo/swift-corelibs-dev <https://lists.swift.org/mailman/listinfo/swift-corelibs-dev>
> 
> 
> -- 
> Ian Partridge
> _______________________________________________
> swift-corelibs-dev mailing list
> swift-corelibs-dev at swift.org <mailto:swift-corelibs-dev at swift.org>
> https://lists.swift.org/mailman/listinfo/swift-corelibs-dev <https://lists.swift.org/mailman/listinfo/swift-corelibs-dev>_______________________________________________
> swift-corelibs-dev mailing list
> swift-corelibs-dev at swift.org <mailto:swift-corelibs-dev at swift.org>
> https://lists.swift.org/mailman/listinfo/swift-corelibs-dev <https://lists.swift.org/mailman/listinfo/swift-corelibs-dev>
> 
> 
> _______________________________________________
> swift-corelibs-dev mailing list
> swift-corelibs-dev at swift.org <mailto:swift-corelibs-dev at swift.org>
> https://lists.swift.org/mailman/listinfo/swift-corelibs-dev <https://lists.swift.org/mailman/listinfo/swift-corelibs-dev>
> 
> 
> _______________________________________________
> swift-corelibs-dev mailing list
> swift-corelibs-dev at swift.org <mailto:swift-corelibs-dev at swift.org>
> https://lists.swift.org/mailman/listinfo/swift-corelibs-dev <https://lists.swift.org/mailman/listinfo/swift-corelibs-dev>
> 
> 
> _______________________________________________
> swift-corelibs-dev mailing list
> swift-corelibs-dev at swift.org
> https://lists.swift.org/mailman/listinfo/swift-corelibs-dev

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.swift.org/pipermail/swift-corelibs-dev/attachments/20170706/7c0893a1/attachment.html>