On 22-09-2022 00:24, Dr. Arne Babenhauserheide wrote:
> 
> "Dr. Arne Babenhauserheide" <arne_bab@web.de> writes:
> 
>> +    (propagated-inputs (list python-mutagen python-pycairo python-pygobject ffmpeg perl-image-exiftool bubblewrap gdk-pixbuf poppler librsvg))
> 
> My local ffmpeg is ffmpeg-5, but this dependency pulls in ffmpeg-4 — can
> I express "any version of ffmpeg"?

This does not answer the question you asked, but if your intention is to 
pull in a newer version of ffmpeg, you can write ffmpeg-5 instead of 
ffmpeg-4.

Greetings,
Maxime.