neovim: add plugins and config from old setup

home-manager/modules/neovim.nix

@@ -1,6 +1,10 @@
 { pkgs, ... }: {
   programs.neovim = {
     enable = true;
+    coc = {
+      enable = true;
+    };
+    withPython3 = true;
     vimAlias = true;
     plugins = with pkgs.vimPlugins; [
 
@@ -11,7 +15,7 @@
       neoformat
 
       # Colorscheme
-      vim-monokai
+      gruvbox-nvim
 
       # Fileexplorer in the sidebar
       nvim-tree-lua
@@ -24,13 +28,71 @@
 
       # git diff icons on the left sidebar
       vim-gitgutter
+
+      # One languagepack to rule them all
+      vim-polyglot
+
+      # blockcomments
+      tcomment_vim
+
+      # Go plugin from fatih
+      vim-go
     ];
     extraConfig = ''
       set mouse=a
       set termguicolors
       set background=dark
       set nu
-      colorscheme monokai
+      colorscheme gruvbox
+      set hlsearch
+      set tabstop=4
+      set shiftwidth=4
+      set softtabstop=4
+      set expandtab
+      set cursorline
+      let mapleader = ","
+
+      " Autosave when focus is lost
+      :au FocusLost * :wa
+
+      ""Hotkeys
+      set pastetoggle=<F10>
+      nnoremap <silent><cr> :nohlsearch<CR>
+      inoremap jj <Esc>
+
+      " Faster tab switching
+      map <Tab> :bnext<cr>
+      map <S-Tab> :bprevious<cr>
+
+      " easier moving of code blocks
+      set hidden
+      vnoremap < <gv
+      vnoremap > >gv
+
+      " Permanent undo history
+      set dir=~/.tmp/
+      set backupdir=~/.tmp/bak
+      if v:version >= 703
+        set undodir=~/.tmp/
+        set undofile
+        set undolevels=100
+        set undoreload=1000
+      endif
+
+      " Diasble polyglot for languages with their own plugin
+      let g:polyglot_disabled = ["go"]
+
+      " vim-go
+      au FileType go nmap <leader>r <Plug>(go-run)
+      au FileType go nmap <leader>b <Plug>(go-build)
+      au FileType go nmap <leader>t <Plug>(go-test)
+      let g:go_highlight_functions = 1
+      let g:go_highlight_methods = 1
+      let g:go_highlight_fields = 1
+      let g:go_highlight_types = 1
+      let g:go_highlight_operators = 1
+      let g:go_highlight_build_constraints = 1
+
       lua << EOF
         require("bufferline").setup{}
         require("nvim-tree").setup{}