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Make `apt` shut up about "modernize-sources" in Trixie

Debian

Apt in Trixie (Debian 13) has the annoying function to tell you "Notice: Some sources can be modernized. Run 'apt modernize-sources' to do so." ... every single time you run apt update. Not cool for logs and log monitoring.

And - of course - if you had the option to do this, you ... would have run the indicated apt modernize-sources command to convert your sources.list to "deb822 .sources format" files already. So an information message once or twice would have done.

Well, luckily you can help yourself:

apt -o APT::Get::Update::SourceListWarnings=false will keep apt shut up. This could go into an alias or your systems management tool / update script.

Alternatively add

# Keep apt shut about preferring the "deb822" sources file format
APT::Get::Update::SourceListWarnings "false";

to /etc/apt/apt.conf.d/10quellsourceformatwarnings .

This silences the notices about sources file formats (not only the deb822 one) system-wide. That way you can decide when you can / want to migrate to the new, more verbose, apt sources format yourself.

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Klaus Kannegießer on :

Thank you so much Daniel! You made a whole IT department happy to get rid of that annoyance from our logstash. I owe you a beer. And other beers already.

Ben Aliobert on :

OMG, thank you! I checked the man page and --help but could not find how to disable this shit. I sometimes wonder what people spend their development time on. "I have developed this amazing feature and nobody sees my ingenuity .... I will bug them to death to realize how great ~~it is~~ I am". Delusional.

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