Add configurations for latexmk to work with minted, change pdf viewer.

init.vim

@@ -40,7 +40,9 @@ call plug#end()
 "set background=light
 colorscheme gruvbox
 let g:gruvbox_contrast_light = 'hard'
-let g:vimtex_view_general_viewer = 'okular'
+
+let g:vimtex_view_method = 'mupdf'  
+let g:vimtex_compiler_latexmk= {'options' : ['-pdf', '-shell-escape', '-verbose', '-file-line-error', '-synctex=1', '-interaction=nonstopmode',],}
 
 "Open NERDTree
 :nnoremap <silent> <expr> <F2> g:NERDTree.IsOpen() ? "\:NERDTreeClose<CR>" : bufexists(expand('%')) ? "\:NERDTreeFind<CR>" : "\:NERDTree<CR>"
@@ -162,7 +164,24 @@ augroup fcitxHandler
     autocmd InsertEnter * silent call FcitxOn()
     autocmd InsertLeave * silent call FcitxOff()
 augroup END
-let g:vimtex_view_general_viewer = 'okular'
+
+"For vimtex 
+let g:vimtex_view_method = 'mupdf'
+let g:compiler = vimtex#compiler#_template#new({
+      \ 'name' : 'latexmk',
+      \ 'aux_dir': '',
+      \ 'callback' : 1,
+      \ 'continuous': 1,
+      \ 'executable' : 'latexmk',
+      \ 'options' : [
+      \   '-verbose',
+      \   '-file-line-error',
+      \   '-synctex=1',
+      \   '-interaction=nonstopmode',
+      \   '-shell-escape',
+      \ ],
+      \})
+
 
 map <F3> :ALEToggle<CR>
 "Use 24-bit (true-color) mode in Vim/Neovim when outside tmux.