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Bug#1117683: pyinstaller-hooks-contrib: FTBFS due to test failure on valid TZ value

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On Thu, 2025-10-09 at 11:19:21 -0700, Soren Stoutner wrote:
> On Thursday, October 9, 2025 9:56:57 AM Mountain Standard Time Guillem Jover 
> wrote:
> > This package FTBFS when setting the TZ variable using the abbreviated
> > timezone and offset format. Such as when calling it with:
> 
> Thank you for your detailed bug report.
> 
> pyinstaller-hooks-contrib does indeed include a test expecting to find the 
> timezone described in the Continent/City (zoneinfo) syntax.  This is the 
> generally recommended timezone format in Linux.

Recommended by who?

> The package builds fine for me, on Salsa, and on the official buildds.

That does not mean the package does not contain a broken test though.
:)

> Can you point me to any official documentation that says one of the goals of 
> the Debian project is to enforce that all software works with the deprecated 
> GMT+12 format?  If so, I would be happy to take a look at this bug.

Sorry, but deprecated by who? I see no such statement on neither of:

  https://sourceware.org/glibc/manual/2.42/html_node/TZ-Variable.html
  https://sourceware.org/glibc/manual/2.42/html_node/Proleptic-TZ.html
  https://manpages.debian.org/unstable/manpages-dev/tzset.3.en.html
  https://pubs.opengroup.org/onlinepubs/9799919799/functions/tzset.html
  https://pubs.opengroup.org/onlinepubs/9799919799/basedefs/V1_chap08.html#tag_08

Instead, from the POSIX standard the main take away is that, for the
third form (that is the non-colon-prefixed, non-proleptic form), it is
stated:

  ```
  the value indicates either a geographical timezone or a special
  timezone from an implementation-defined timezone database.
  ```

Where to me that clearly reads that this format is non-portable, so I
don't see how the others would then be deprecated in any form.

> If there is no documentation saying this is a technical goal of the Debian 
> project, then I will close this bug as wontfix.

Hmm, we do not have an exhaustive list of all potentially broken things
a build system, or anything in a package can do. lintian or Debian Policy
encode either things that are easy to miss, or nice to automate, or where
different trade-offs could be made. Here we have a clear build failure
when setting a variable to a supported (non-deprecated) value, so I'm not
sure I understand the request, TBH.

The build even fails with something like TZ=UTC0 or TZ=UTC+0 (which is
the strictly conforming way to specify a UTC timezone). (And this is
something that I could see «dpkg-buildpackage --sanitize-env» setting
and potentially that becoming a default in the future.)

Thanks,
Guillem

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Bug#1117683: pyinstaller-hooks-contrib: FTBFS due to test failure on valid TZ value Soren Stoutner <soren@debian.org> - 2025-10-09 20:30 +0200
  Bug#1117683: pyinstaller-hooks-contrib: FTBFS due to test failure on valid TZ value Guillem Jover <guillem@debian.org> - 2025-10-09 22:30 +0200
    Bug#1117683: pyinstaller-hooks-contrib: FTBFS due to test failure on valid TZ value Soren Stoutner <soren@debian.org> - 2025-10-09 22:50 +0200
      Bug#1117683: pyinstaller-hooks-contrib: FTBFS due to test failure on valid TZ value Guillem Jover <guillem@debian.org> - 2025-10-10 00:00 +0200
        Bug#1117683: pyinstaller-hooks-contrib: FTBFS due to test failure on valid TZ value Soren Stoutner <soren@debian.org> - 2025-10-10 00:10 +0200
          Bug#1117683: pyinstaller-hooks-contrib: FTBFS due to test failure on valid TZ value Soren Stoutner <soren@debian.org> - 2025-10-10 22:00 +0200

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