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Message-ID: <ee25b3e0-e459-4f05-84d4-79c54224d639@dronecode.org.uk>
Date: Tue, 10 Mar 2026 22:28:17 +0000
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Subject: Re: gobject-introspection 1.86.0-1
To: cygwin AT cygwin DOT com
References: <20250913215145 DOT 14665-1-takashi DOT yano AT nifty DOT ne DOT jp>
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On 13/09/2025 13:51, Takashi Yano via Cygwin-announce wrote:
> The following packages have been uploaded to the Cygwin distribution:
> 
> * gobject-introspection-1.86.0-1
> * libgirepository1.0_1-1.86.0-1
> * libgirepository1.0-devel-1.86.0-1
> * libgirepository1.0-doc-1.86.0-1
> * girepository-cairo1.0-1.86.0-1
> * girepository-GIRepository2.0-1.86.0-1
> * girepository-GLib2.0-1.86.0-1
> * girepository-x11-1.86.0-1
> 
> The goal of the project is to describe GObject APIs and collect
> them in a uniform, machine readable format.

Hi Takashi,

I just tripped over a small problem with gobject-introspection:

> $ /usr/sbin/alternatives --set python3 /usr/bin/python3.12
> 
> $ g-ir-scanner
> Traceback (most recent call last):
>   File "/usr/bin/g-ir-scanner", line 133, in <module>
>     from giscanner.scannermain import scanner_main
>   File "/usr/lib/gobject-introspection/giscanner/scannermain.py", line 35, in <module>
>     from giscanner.ast import Include, Namespace
>   File "/usr/lib/gobject-introspection/giscanner/ast.py", line 27, in <module>
>     from .sourcescanner import CTYPE_TYPEDEF, CSYMBOL_TYPE_TYPEDEF
>   File "/usr/lib/gobject-introspection/giscanner/sourcescanner.py", line 31, in <module>
>     from giscanner._giscanner import SourceScanner as CSourceScanner
> ModuleNotFoundError: No module named 'giscanner._giscanner'

This fails because the _giscanner module is built for (and linked 
against) python3.9.


I don't quite understand why this is happening since we configure with 
"-Dpython=${PYTHON3}", so I'd expect end up with the full path to 
specific python version in the shebang line in g-ir-scanner.

(I think that's what was happening before upstream switched from 
autotools to meson)

In any case, this can be fixed in the cygport by using 
python3_fix_shebang on this script.


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