I use  vimtex, a vim plugin that provides support for writing and compiling LaTeX documents and  zathura as the document viewer. In the beginning, I was determined to stick to  MuPDF as the PDF viewer due to its fast and complete features despite being small and lightweight but I kept encountering unpleasant experiences while compiling documents where it always froze the screen of my laptop when I closed the viewer.
" All system-wide defaults are set in $VIMRUNTIME/archlinux.vim (usually just " /usr/share/vim/vimfiles/archlinux.vim) and sourced by the call to :runtime " you can find below. If you wish to change any of those settings, you should " do it in this file (/etc/vimrc), since archlinux.vim will be overwritten " everytime an upgrade of the vim packages is performed. It is recommended to " make changes after sourcing archlinux.vim since it alters the value of the " 'compatible' option.
Among the main applications run on my Arch system are:- The sound utility with ALSA, a set of built-in GNU/Linux kernel modules where it provides kernel driven sound card. Configuration for ALSA which stands for [Advanced Linux Sound Architecture] is set locally by creating [.asoundrc] file. The linked file is what I have as a configuration that enables  dmix; where it allows software mixing (the ability to play multiple sound files or applications at the same time through the same device) in an easy to use syntax and without the hassle of installing/understanding a new application first.