xbps-query
XBPS utility to query for package and repository information.
TLDR
Search for a package in remote repositories using a regular expression or a keyword (if --regex is omitted)
$ xbps-query --search [regular_expression|keyword] --repository --regex
Show information about an installed package
$ xbps-query --show [package]
Show information about a package in remote repositories
$ xbps-query --show [package] --repository
List packages registered in the package database
$ xbps-query --list-pkgs
List explicitly installed packages (i.e. not automatically installed as dependencies)
$ xbps-query --list-manual-pkgs