I investigated $apt_keep_downloaded_packages=1 and found that this feature was added in more recent version of sbuild than debian `buster` provides (https:// bugs.debian.org/cgi-bin/bugreport.cgi?att=1;bug=933723 is a bug where it was solved)
Probably, that's why I couldn't get any results under `buster` host - apt cache is hardcoded to be cleaned by sbuild after installing dependencies. So, as I understood, the only way to cache dependency packages under `buster` is to download them in some external way. -- Uladzimir Bely Promwad Ltd. External service provider of ilbers GmbH Maria-Merian-Str. 8 85521 Ottobrunn, Germany +49 (89) 122 67 24-0 Commercial register Munich, HRB 214197 General Manager: Baurzhan Ismagulov
