pkg info显示有关已安装软件包的完整信息。如何为尚未安装的软件包获得相同的输出？在 Ubuntu 上，apt show正是这样做的。
ETA：我正在寻找的一个例子，取自 Ubuntu。
$ apt show sudoku
Package: sudoku
Version: 1.0.5-2build2
Priority: optional
Section: universe/games
Origin: Ubuntu
Maintainer: Ubuntu Developers <ubuntu-devel-discuss@lists.ubuntu.com>
Original-Maintainer: Peter Spiess-Knafl <dev@spiessknafl.at>
Bugs: https://bugs.launchpad.net/ubuntu/+filebug
Installed-Size: 124 kB
Depends: libc6 (>= 2.4), libncurses5 (>= 6), libtinfo5 (>= 6)
Homepage: https://github.com/cinemast/sudoku
Download-Size: 41.9 kB
APT-Sources: http://ru.archive.ubuntu.com/ubuntu bionic/universe amd64 Packages
Description: console based sudoku
This sudoku puzzle generator/solver features:
* character based (curses) interface;
* cross-platform (Minix, Unix, Windows) with …