diff --git a/.vimrc.keymap b/.vimrc.keymap
index 529b0061..589b9286 100755
--- a/.vimrc.keymap
+++ b/.vimrc.keymap
@@ -31,3 +31,68 @@ map <leader>n :NERDTreeToggle<CR>
 " quickfix
 nmap <leader>q <Plug>window:quickfix:toggle
 
+" ack
+cnoreabbrev Ack Ack!
+nnoremap <Leader>/ :Ack!<Space>
+nnoremap <silent> [q :cprevious<CR>
+nnoremap <silent> ]q :cnext<CR>
+
+" coc
+function! s:check_back_space() abort
+    let col = col('.') - 1
+    return !col || getline('.')[col - 1]  =~# '\s'
+endfunction
+
+function! s:show_documentation()
+    if (index(['vim','help'], &filetype) >= 0)
+        execute 'h '.expand('<cword>')
+    else
+        call CocAction('doHover')
+    endif
+endfunction
+inoremap <silent><expr> <TAB>
+            \ pumvisible() ? "\<C-n>" :
+            \ <SID>check_back_space() ? "\<TAB>" :
+            \ coc#refresh()
+inoremap <expr><S-TAB> pumvisible() ? "\<C-p>" : "\<C-h>"
+inoremap <silent><expr> <c-space> coc#refresh()
+
+if exists('*complete_info')
+    inoremap <expr> <cr> complete_info()["selected"] != "-1" ? "\<C-y>" : "\<C-g>u\<CR>"
+else
+    inoremap <expr> <cr> pumvisible() ? "\<C-y>" : "\<C-g>u\<CR>"
+endif
+
+nmap <silent> [g <Plug>(coc-diagnostic-prev)
+nmap <silent> ]g <Plug>(coc-diagnostic-next)
+
+nmap <silent> gd <Plug>(coc-definition)
+nmap <silent> gy <Plug>(coc-type-definition)
+nmap <silent> gi <Plug>(coc-implementation)
+nmap <silent> gr <Plug>(coc-references)
+
+nnoremap <silent> K :call <SID>show_documentation()<CR>
+nmap <leader>rn <Plug>(coc-rename)
+xmap <leader>f  <Plug>(coc-format-selected)
+nmap <leader>f  <Plug>(coc-format-selected)
+xmap <leader>a  <Plug>(coc-codeaction-selected)
+nmap <leader>a  <Plug>(coc-codeaction-selected)
+
+nmap <leader>ac  <Plug>(coc-codeaction)
+nmap <leader>qf  <Plug>(coc-fix-current)
+
+xmap if <Plug>(coc-funcobj-i)
+xmap af <Plug>(coc-funcobj-a)
+omap if <Plug>(coc-funcobj-i)
+omap af <Plug>(coc-funcobj-a)
+
+nmap <silent> <TAB> <Plug>(coc-range-select)
+xmap <silent> <TAB> <Plug>(coc-range-select)
+nnoremap <silent> <space>a  :<C-u>CocList diagnostics<cr>
+nnoremap <silent> <space>e  :<C-u>CocList extensions<cr>
+nnoremap <silent> <space>c  :<C-u>CocList commands<cr>
+nnoremap <silent> <space>o  :<C-u>CocList outline<cr>
+nnoremap <silent> <space>s  :<C-u>CocList -I symbols<cr>
+nnoremap <silent> <space>j  :<C-u>CocNext<CR>
+nnoremap <silent> <space>k  :<C-u>CocPrev<CR>
+nnoremap <silent> <space>p  :<C-u>CocListResume<CR>
diff --git a/.vimrc.plugins-settings b/.vimrc.plugins-settings
index 323a1210..051c7cc3 100644
--- a/.vimrc.plugins-settings
+++ b/.vimrc.plugins-settings
@@ -24,80 +24,11 @@ autocmd VimEnter * if argc() == 1 && isdirectory(argv()[0]) && !exists("s:std_in
 let g:rainbow_active = 1
 
 " coc
-set updatetime=300
-
-" Some servers have issues with backup files, see #649.
-set nobackup
-set nowritebackup
-
-" Having longer updatetime (default is 4000 ms = 4 s) leads to noticeable
-" delays and poor user experience.
-set updatetime=300
-
-" Don't pass messages to |ins-completion-menu|.
 set shortmess+=c
-
-" Always show the signcolumn, otherwise it would shift the text each time
-" diagnostics appear/become resolved.
 set signcolumn=yes
 
-" Use tab for trigger completion with characters ahead and navigate.
-" NOTE: Use command ':verbose imap <tab>' to make sure tab is not mapped by
-" other plugin before putting this into your config.
-inoremap <silent><expr> <TAB>
-            \ pumvisible() ? "\<C-n>" :
-            \ <SID>check_back_space() ? "\<TAB>" :
-            \ coc#refresh()
-inoremap <expr><S-TAB> pumvisible() ? "\<C-p>" : "\<C-h>"
-
-function! s:check_back_space() abort
-    let col = col('.') - 1
-    return !col || getline('.')[col - 1]  =~# '\s'
-endfunction
-
-" Use <c-space> to trigger completion.
-inoremap <silent><expr> <c-space> coc#refresh()
-
-" Use <cr> to confirm completion, `<C-g>u` means break undo chain at current
-" position. Coc only does snippet and additional edit on confirm.
-" <cr> could be remapped by other vim plugin, try `:verbose imap <CR>`.
-if exists('*complete_info')
-    inoremap <expr> <cr> complete_info()["selected"] != "-1" ? "\<C-y>" : "\<C-g>u\<CR>"
-else
-    inoremap <expr> <cr> pumvisible() ? "\<C-y>" : "\<C-g>u\<CR>"
-endif
-
-" Use `[g` and `]g` to navigate diagnostics
-nmap <silent> [g <Plug>(coc-diagnostic-prev)
-nmap <silent> ]g <Plug>(coc-diagnostic-next)
-
-" GoTo code navigation.
-nmap <silent> gd <Plug>(coc-definition)
-nmap <silent> gy <Plug>(coc-type-definition)
-nmap <silent> gi <Plug>(coc-implementation)
-nmap <silent> gr <Plug>(coc-references)
-
-" Use K to show documentation in preview window.
-nnoremap <silent> K :call <SID>show_documentation()<CR>
-
-function! s:show_documentation()
-    if (index(['vim','help'], &filetype) >= 0)
-        execute 'h '.expand('<cword>')
-    else
-        call CocAction('doHover')
-    endif
-endfunction
-
-" Highlight the symbol and its references when holding the cursor.
 autocmd CursorHold * silent call CocActionAsync('highlight')
 
-" Symbol renaming.
-nmap <leader>rn <Plug>(coc-rename)
-
-" Formatting selected code.
-xmap <leader>f  <Plug>(coc-format-selected)
-nmap <leader>f  <Plug>(coc-format-selected)
-
 augroup mygroup
     autocmd!
     " Setup formatexpr specified filetype(s).
@@ -106,57 +37,13 @@ augroup mygroup
     autocmd User CocJumpPlaceholder call CocActionAsync('showSignatureHelp')
 augroup end
 
-" Applying codeAction to the selected region.
-" Example: `<leader>aap` for current paragraph
-xmap <leader>a  <Plug>(coc-codeaction-selected)
-nmap <leader>a  <Plug>(coc-codeaction-selected)
-
-" Remap keys for applying codeAction to the current line.
-nmap <leader>ac  <Plug>(coc-codeaction)
-" Apply AutoFix to problem on the current line.
-nmap <leader>qf  <Plug>(coc-fix-current)
-
-" Introduce function text object
-" NOTE: Requires 'textDocument.documentSymbol' support from the language server.
-xmap if <Plug>(coc-funcobj-i)
-xmap af <Plug>(coc-funcobj-a)
-omap if <Plug>(coc-funcobj-i)
-omap af <Plug>(coc-funcobj-a)
-
-" Use <TAB> for selections ranges.
-" NOTE: Requires 'textDocument/selectionRange' support from the language server.
-" coc-tsserver, coc-python are the examples of servers that support it.
-nmap <silent> <TAB> <Plug>(coc-range-select)
-xmap <silent> <TAB> <Plug>(coc-range-select)
-
-" Add `:Format` command to format current buffer.
 command! -nargs=0 Format :call CocAction('format')
-
-" Add `:Fold` command to fold current buffer.
 command! -nargs=? Fold :call     CocAction('fold', <f-args>)
-
-" Add `:OR` command for organize imports of the current buffer.
 command! -nargs=0 OR   :call     CocAction('runCommand', 'editor.action.organizeImport')
 
-" Add (Neo)Vim's native statusline support.
-" NOTE: Please see `:h coc-status` for integrations with external plugins that
-" provide custom statusline: lightline.vim, vim-airline.
 set statusline^=%{coc#status()}%{get(b:,'coc_current_function','')}
 
-" Mappings using CoCList:
-" Show all diagnostics.
-nnoremap <silent> <space>a  :<C-u>CocList diagnostics<cr>
-" Manage extensions.
-nnoremap <silent> <space>e  :<C-u>CocList extensions<cr>
-" Show commands.
-nnoremap <silent> <space>c  :<C-u>CocList commands<cr>
-" Find symbol of current document.
-nnoremap <silent> <space>o  :<C-u>CocList outline<cr>
-" Search workspace symbols.
-nnoremap <silent> <space>s  :<C-u>CocList -I symbols<cr>
-" Do default action for next item.
-nnoremap <silent> <space>j  :<C-u>CocNext<CR>
-" Do default action for previous item.
-nnoremap <silent> <space>k  :<C-u>CocPrev<CR>
-" Resume latest coc list.
-nnoremap <silent> <space>p  :<C-u>CocListResume<CR>
+" ack
+let g:ackprg = 'rg --vimgrep --smart-case'
+let g:ack_autoclose = 1
+let g:ack_use_cword_for_empty_search = 1
diff --git a/.vimrc.settings b/.vimrc.settings
index 3e534ba1..6ee1a2d3 100755
--- a/.vimrc.settings
+++ b/.vimrc.settings
@@ -5,6 +5,9 @@ set noswapfile
 set undofile
 set undodir=$HOME/.vim/undo
 set spell spelllang=en_gb
+set updatetime=300
+set nobackup
+set nowritebackup
 
 " buffers can be switched despite having changes
 set hidden
diff --git a/nixos/home-manager/programs/vim.nix b/nixos/home-manager/programs/vim.nix
index 39bc0961..724f521c 100644
--- a/nixos/home-manager/programs/vim.nix
+++ b/nixos/home-manager/programs/vim.nix
@@ -11,6 +11,7 @@
     withRuby = true;
 
     plugins = with pkgs.vimPlugins; [
+      ack-vim
       coc-highlight
       coc-nvim
       coc-rust-analyzer
@@ -19,6 +20,7 @@
       fzf-vim
       nerdtree
       nerdtree-git-plugin
+      quickfix-reflector-vim
       rainbow
       tabular
       vim-airline