Re: Python package gaupol: Namespace Gdk not available

[Kei Kebreau]

Pierre Neidhardt <address@hidden> writes:

> Hi there,
>
> I'm trying to package gaupol (https://otsaloma.io/gaupol/), a subtitle
> editor.
>
> (define-public gaupol

[...]

>          (replace 'install
>            (lambda* (#:key outputs #:allow-other-keys)
>              (zero?
>               (system* "python" "setup.py" "install"
>                        (string-append "--prefix=" (assoc-ref outputs "out"))
>                        "--root=/")))))))

You can use 'invoke' here instead of 'zero?' with 'system*' for the same
effect.

>     (synopsis "Editor for text-based subtitles")
>     (description
>      "Gaupol supports multiple subtitle file formats and provides means of
> creating subtitles, editing texts and timing subtitles to match video.  The
> user interface features a builtin video player and is designed with attention
> to convenience of translating and batch processing of multiple documents.")
>     (home-page "http://otsaloma.io/gaupol/";)
>     (license license:gpl3+)))
>
>
> The build runs fine, or so it seems.  But when I try to start it:
>
>> /gnu/store/gh44n7nfc7x3w8bbmq5l1glvlvycymdw-gaupol-1.4/bin/gaupol 
> Traceback (most recent call last):
>   File 
> "/gnu/store/gh44n7nfc7x3w8bbmq5l1glvlvycymdw-gaupol-1.4/bin/.gaupol-real", 
> line 17, in <module>
>     import gaupol
>   File 
> "/gnu/store/gh44n7nfc7x3w8bbmq5l1glvlvycymdw-gaupol-1.4/lib/python3.6/site-packages/gaupol/__init__.py",
>  line 34, in <module>
>     gi.require_version("Gdk", "3.0")
>   File 
> "/gnu/store/7p24q6jbkzwp7cp44543mi9zzn4czgig-python-pygobject-3.28.2/lib/python3.6/site-packages/gi/__init__.py",
>  line 130, in require_version
>     raise ValueError('Namespace %s not available' % namespace)
> ValueError: Namespace Gdk not available
>
> I suppose I'm missing a dependency but I can't find any reference to
> python+gdk anywhere beside python-pygobject... Must be something else.
>
> Anyone?

My first guess would be that you need to wrap gaupol with the
environment variable "GI_TYPELIB_PATH". Take a look at the sonata
package in gnu/packages/mpd.scm for an example.

Hope this helps,
Kei

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