A simple setup guide to get a working environment for compiling and editing LaTeX documents on Android using Tectonic (Compiler), Neovim (Editor) with plugins for code completion and compilation in Termux. This can work on any other Linux distro with their respective package manager.

Install Termux from the recommended source i.e. F-Droid Or if it suits your taste GitHub. All further steps to be followed in Termux.