Now it seems more plausible that telegram-desktop suffered from the same problem. I discovered my pavucontrol acting the same way as mpv, and after some investigation I got that:
``` +radio at buer in ~ > for file in ~/.guix-home/profile/bin/* file -L $file end | grep empty /home/radio/.guix-home/profile/bin/mpv: empty /home/radio/.guix-home/profile/bin/pamixer: empty /home/radio/.guix-home/profile/bin/pavucontrol: empty /home/radio/.guix-home/profile/bin/pinentry: empty /home/radio/.guix-home/profile/bin/pinentry-gtk-2: empty /home/radio/.guix-home/profile/bin/redshift: empty /home/radio/.guix-home/profile/bin/yt-dlp: empty
```
I hope it can be useful to understand what is happening.
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