apt why debugging, and HTTPS for dselect. Learn how this Debian package manager upgrade improves Linux stability & security. Download via Debian Experimental today!The APT 3.1 package manager has officially launched, marking another milestone for Debian-based Linux distributions following the major APT 3.0 release earlier this year.
This update introduces critical performance enhancements, new solver defaults for Ubuntu, and advanced debugging tools—solidifying APT’s role as the backbone of Linux package management.
What’s New in APT 3.1?
1. Improved Package Solver Now Default on Ubuntu
The APT 3.0 solver, previously experimental, is now enabled by default in Ubuntu’s CLI tools.
Optimized for faster dependency resolution and reduced conflicts, ensuring smoother system updates.
2. New Debugging Commands: apt why & apt why-not
Inspired by Aptitude, these commands provide detailed solver traces, helping users understand package decisions.
Example use case:
apt why python3Outputs a dependency tree, clarifying why a package is installed or blocked.
3. Enhanced Repository Control with Include/Exclude Options
Granular repository management: Limit packages from specific sources, improving security and stability.
Ideal for enterprise environments requiring strict dependency control.
4. HTTPS Support for Dselect & Bug Fixes
Dselect, the classic Debian front-end, now supports secure HTTPS downloads.
Numerous stability patches and performance tweaks for seamless upgrades.
Why This Matters for Linux Users & Developers?
APT remains the most trusted package manager for Debian, Ubuntu, and derivatives. With 3.1, users gain:
✔ Better debugging (apt why/why-not)
✔ More reliable dependency resolution (default solver)
✔ Tighter repository security (Include/Exclude filters)
How to Get APT 3.1?
Currently available in Debian Experimental, APT 3.1 will soon reach stable channels. For early adopters:
sudo apt update && sudo apt install -t experimental apt
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