Update

after/plugin/plugin_settings.vim

@@ -183,11 +183,6 @@ let g:EditorConfig_max_line_indicator = 'none'
 let g:vim_current_word#highlight_current_word = 0
 hi default link CurrentWordTwins CursorColumn
 
-
-" vista
-let g:vista#renderer#enable_icon = 0
-
-
 " vim-lsp
 function! s:on_lsp_buffer_enabled() abort
     setlocal omnifunc=lsp#complete
@@ -222,3 +217,10 @@ let g:lsp_auto_enable = 0
 command -nargs=* Rag Clap grep ++query='<args>'
 let g:clap_layout = {'relative': 'editor', 'width': '95%', 'height': '33%', 'row': '33%', 'col': '5%'}
 let g:clap_use_pure_python = 1
+
+" vista
+let g:vista#renderer#enable_icon = 0
+let g:vista_ctags_cmd = {
+      \ 'haskell': 'hasktags -x -o - -c',
+      \ 'yaml': 'hasktags -x -o - -c',
+      \ }