diff --git a/.gitignore b/.gitignore
index e07b590..82ad7e7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 .SpaceVim.d/.netrwhist
 .SpaceVim.d/init.vim
 .DS_Store
+nvim/plugin
diff --git a/nvim/lua/settings.lua b/nvim/lua/settings.lua
index e60df43..08ea8d4 100644
--- a/nvim/lua/settings.lua
+++ b/nvim/lua/settings.lua
@@ -45,8 +45,8 @@ vim.o.guifont = "FiraCode Nerd Font:h17"
 vim.g.vimspector_enable_mappings = 'HUMAN'
 vim.g['test#go#rspec#options'] = { nearest= '--v', suite=   '--v' }
 vim.o.background = "dark"
-require('monokai')
-vim.cmd('colorscheme monokai_pro')
+--require('monokai')
+--vim.cmd('colorscheme monokai_pro')
 --require('nightfox').set()
 --vim.cmd('colorscheme one-monokai')
 --vim.cmd([[colorscheme gruvbox]])
diff --git a/nvim/settings.lua b/nvim/settings.lua
index 6c239f9..78bd154 100644
--- a/nvim/settings.lua
+++ b/nvim/settings.lua
@@ -45,7 +45,7 @@ O.python.analysis.use_library_code_types = true
 -- TODO look into stylua
 O.lua.formatter = 'lua-format'
 -- O.lua.formatter = 'lua-format'
-O.lua.autoformat = false
+--O.lua.autoformat = false
 
 -- javascript
 O.tsserver.formatter = 'prettier'
diff --git a/setup.py b/setup.py
index ab45cea..14bd3d4 100755
--- a/setup.py
+++ b/setup.py
@@ -2,45 +2,85 @@
 import os
 import argparse
 
+home_dir = os.getenv("HOME")
+
 def main():
     parser = argparse.ArgumentParser()
     parser.add_argument("-i","--install", help="install tools",type=str)
     args = parser.parse_args()
-    install_val = args.install
-    if install_val == "":
-        print("install value is empty")
-        exit()
-    if install_val in install_map:
-        install_map.get(args.install)()
-    else:
-        print("cmd not support, install: "+args.install)
+    installer = Installer()
+    installer.install(args.install)
+
+class Base(object):
+    def cmd_exist(self, name):
+        from shutil import which
+        return which(name) is not None
+
+    def check_link(self, name:str,target:str):
+        if os.path.islink(name):
+            t = os.readlink(name)
+            if t == target:
+                return
+        os.system("mv %s %s.bak"%(name,name))
+        os.system("ln -s %s %s"%(target,name))
+class Installer(Base):
+    def install(self, val:str):
+        if val== "":
+            print("install value is empty")
+            exit()
+            
+        install_map = {
+            "neovim": self.install_neovim,
+            "z": self.install_z,
+            "git": self.install_git,
+            "packer": self.install_packer,
+        }
+        if val in install_map:
+            install_map.get(val)()
+        else:
+            print("cmd not support, install: "+val)
 
 
-# install neovim
-def install_neovim():
-    os.chdir("/usr/local")
-    os.system("wget https://github.com/neovim/neovim/releases/download/v0.6.0/nvim-macos.tar.gz")
-    os.system("tar zxf nvim-macos.tar.gz")
-    os.system("ln -s /usr/local/nvim-osx64 /usr/local/nvim")
+    # install neovim
+    def install_neovim(self):
+        if not self.cmd_exist("nvim"):
+            os.chdir("/usr/local")
+            os.system("wget https://github.com/neovim/neovim/releases/download/v0.6.0/nvim-macos.tar.gz")
+            os.system("tar zxf nvim-macos.tar.gz")
+            os.system("ln -s /usr/local/nvim-osx64 /usr/local/nvim")
+        self.check_link(home_dir+"/.config/nvim",home_dir+"/.doftile/nvim")
+
+    def install_z(self):
+        if not os.path.exists("/usr/local/z.lua"):
+            os.system("git clone --depth=1 https://github.com/skywind3000/z.lua.git /usr/local/z.lua")
+
+    def install_git(self):
+        if not self.cmd_exist("git"):
+            print("git is not exist")
+        self.check_link(home_dir+"~/.gitconfig",  home_dir+"/.dotfile/git/.gitconfig")
+
+    def install_packer(self):
+        if not os.path.exists(home_dir+"/.local/share/nvim/site/pack/packer/start/packer.nvim"):
+            os.system("git clone --depth 1 https://github.com/wbthomason/packer.nvim ~/.local/share/nvim/site/pack/packer/start/packer.nvim")
+        else:
+            print("packer already installed")
+class Base(object):
+    def cmd_exist(self, name):
+        from shutil import which
+        return which(name) is not None
+
+    def check_link(self, name:str,target:str):
+        if os.path.islink(name):
+            t = os.readlink(name)
+            if t == target:
+                print("path is right: %s"%name)
+                return
+        os.system("mv %s %s.bak"%(name,name))
+        os.system("ln -s %s %s"%(target,name))
 
-def install_z():
-    os.system("git clone --depth=1 https://github.com/skywind3000/z.lua.git /usr/local/z.lua")
 
-def install_git():
-    if not cmd_exist("git"):
-        print("git is not exist")
-    os.system("mv ~/.gitconfig ~/.gitconfig.bak")
-    os.system("ln -s ~/.dotfile/git/.gitconfig ~/.gitconfig")
 
-def cmd_exist(name):
-    from shutil import which
-    return which(name) is not None
 
-install_map = {
-    "neovim": install_neovim,
-    "z": install_z,
-    "git": install_git,
-}
 
 
 if __name__ == '__main__':