Dear Maintainer,

On Debian 13 (trixie), gambas3-gb-qt6-ext cannot be loaded at runtime
because it requests the gb.qt5 component interface -- which is not
present on systems that install only the Qt6 stack (as is the case on
trixie, where no gambas3-gb-qt5 package is provided).

Steps to reproduce
==================

1. Install gambas3, gambas3-gb-qt6 and gambas3-gb-qt6-ext on a clean
   Debian 13 system. Do NOT install any gb.qt5 component.

2. Create or open any Gambas 3 project whose .project declares:
       Component=gb.qt6
       Component=gb.qt6.ext

3. Run it (gbx3, or "Run" from the IDE). The runtime aborts with:

       ** OOPS! INTERNAL ERROR. Program aborting, sorry! :-(
       ** Cannot find interface of library 'gb.qt5'
       ** ERROR: #27: Cannot load component 'gb.qt5': cannot find component

The crash happens before any user code runs, on component load.

Diagnosis
=========

The .component metadata file shipped with the binary correctly states
the dependency:

    $ cat /usr/lib/gambas3/gb.qt6.ext.component
    [Component]
    Author=Benoit Minisini
    Require=gb.qt6

However, the compiled shared library hardcodes a request for the
gb.qt5 interface:

    $ strings /usr/lib/gambas3/gb.qt6.ext.so | grep '^gb\.'
    gb.qt5

This is a leftover from when gb.qt6.ext was created by copying the
sources of gb.qt5.ext: the .component file was updated, but the
GB.GetInterface() call in src/ext/main.cpp was not. The result is a
binary that -- on any system where gb.qt5 is absent -- is unusable.

Affected source location (upstream tree, tag 3.20.2):

    gb.qt6/src/ext/main.cpp:57
        GB.GetInterface("gb.qt5", QT_INTERFACE_VERSION, &QT);

Upstream fix
============

The issue was fixed upstream on 2025-04-02 in commit eb1318a1,
"Load the correct component interface and do not crash anymore.":

https://gitlab.com/gambas/gambas/-/commit/eb1318a1

The change is a one-line typo fix:

Okay, I will soon file a stable update request.

Please find the stable update request at #1136271.

We believe that the bug you reported is fixed in the latest version of
gambas3, which is due to be installed in the Debian FTP archive.

A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 1136260@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Bastian Germann <bage@debian.org> (supplier of updated gambas3 package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@ftp-master.debian.org)
Format: 1.8
Date: Mon, 11 May 2026 12:21:23 +0200
Source: gambas3
Architecture: source
Version: 3.20.2-1+deb13u1
Distribution: trixie
Urgency: medium
Maintainer: Debian Gambas Team <team+debian-gambas@tracker.debian.org>
Changed-By: Bastian Germann <bage@debian.org>
Closes: 1136260
Changes:
 gambas3 (3.20.2-1+deb13u1) trixie; urgency=medium
 .
   * Team upload
   * Fix qt6 component trying to load non-existing qt5 dependency
     (Closes: #1136260)
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