add some vim config

config/home-manager/base.nix

@@ -1,6 +1,7 @@
 { pkgs, ... }: {
   imports = [
     ../programs/zsh.nix
+    ../programs/vim.nix
   ];
   programs = {
     zsh = {

config/programs/vim.nix

@@ -0,0 +1,33 @@
+{ pkgs, ... }: {
+  programs.neovim = {
+    enable = true;
+    coc = {
+      enable = true;
+    };
+    extraConfig = ''
+      set nocompatible
+      set number relativenumber
+
+      " NerdTree config
+      " Automatically open NERDTree and move to the previous window
+      autocmd VimEnter * NERDTree | wincmd p
+      " Close vim when NERDTree is the only window left
+      autocmd BufEnter * if winnr('$') == 1 && exists('b:NERDTree') && b:NERDTree.isTabTree() | quit | endif
+      " Ban replacing NERDTree
+      autocmd BufEnter * if bufname('#') =~ 'NERD_tree_\d\+' && bufname('%') !~ 'NERD_tree_\d\+' && winnr('$') > 1 |
+              \ let buf=bufnr() | buffer# | execute "normal! \<C-W>w" | execute 'buffer'.buf | endif
+      
+      " NerdTree git plugin
+      " Use nerdfonts
+      let g:NERDTreeGitStatusUseNerdFonts = 1
+      
+      " CtrlP config
+      let g:ctrlp_map = '<c-p>'
+      let g:ctrlp_cmd = 'CtrlP'
+    '';
+    plugins = with pkgs.vimPlugins; [
+      nerdtree nerdtree-git-plugin vim-devicons
+      ctrlp-vim
+    ];
+  };
+}