[Webkit-unassigned] [Bug 238958] New: [GTK][WPE] Clear ICU cache only on timezone changes

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=238958

            Bug ID: 238958
           Summary: [GTK][WPE] Clear ICU cache only on timezone changes
           Product: WebKit
           Version: WebKit Local Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Platform
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: aperez at igalia.com

On Linux systems which run systemd-timedated, we can probable use
GDBus to watch the org.freedesktop.timedate1.Timezone property of
the /org/freedesktop/timedate1 system bus object.

The problem with the above approach is that many systems do not use
it (specially embedded ones running WPE, or BSDs running the GTK
port), so instead we may need to pick some info of /etc/localtime
(mtime, ctime, inode/device number?, …) and then only invalidate
the caches when those change.

Extra complication: the /etc/localtime file can be a symlink (and
it often is!) so it may be needed to track the properties of the
target file as well \:-\

Side question: does systemd-timedated take notice itself of changed
done manually to the /etc/localtime file *without* using timedatectl?

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