Neovim version 8 availabe as current package
Treesitter provides excellent language syntax parsing and highlighting and is a very attractive feature of the recent neovim releases. Treesitter is a major attraction, bringing in a new audience for Neovim.
nvim-treesitter package is included in the practicalli/neovim-config-redux configuration.
Install C compiler for neovim-treesitter, to compile a parser for each specific programming language.
gccis not packaged for Termux, although there are guides to install gcc if preferred. clang has proved to be capable of creating the parsers used in the Practicalli configuration.
Telescope and other packages that involve searching for files recommend using ripgrep, a highly optomised tool for finding files on the operating system.