I first updated the package sources and did a system packages upgrade.
Then I installed and configured byobu, so I could:
A> view a package list to build my 'apt install' command with side-by-side apt list
B> copy out the final package install command into a packages.txt file.
- I also added a home directory to the /data/data/com.termux/files/ directory, to be more like Termux
This image still varies slightly from a default Termux on Android, in that I could not get the $HOME variable to persistently set as '/data/data/com.termux/files/home' like the Android Termux.