Hello! I have several questions about guix package options: 1. How to see info about installed package? I think `guix package -s regexp` shows everything it find in repository. Also `guix package --show=element` does the same but for exact element name. So these show info from repository. Which command let me know info about installed package? I did not found it in guix reference card and manual.
2. How to determine why qtwebkit compiles every time I run `guix pull && guix package --substitute-urls=https://ci.guix.info <https://ci.guix.info> -u` ? I think I have some problems in my system (may be for that I've installed blender 2.80 from my own declaration file?) 3. And the last: is ci.guix.info substitution server by default or I need to type it in --substitute-urls option? By the way no any speed advantages when I type it. My last 4 updates was continuing for 2 days. And I need your help. Thank you!
