diff --git a/config/software.json b/config/software.json
index ff32d9a..fb81b94 100644
--- a/config/software.json
+++ b/config/software.json
@@ -1,3 +1,12 @@
 {
-    "user": "klipper"
+    "user": "klipper",
+    "user_groups": "wheel,video,audio,disk,usb",
+    "repos":
+    [
+        {
+            "directory": "kiauh",
+            "url": "https://github.com/dw-0/kiauh.git"
+        }
+    ],
+    "make_venv": true
 }
diff --git a/scripts/__init__.py b/scripts/__init__.py
index c9a01fe..cc465eb 100644
--- a/scripts/__init__.py
+++ b/scripts/__init__.py
@@ -4,7 +4,7 @@ from .sources import *
 from .initramfs import *
 from .board import *
 from .target import *
-from .os import *
 from .software import *
+from .os import *
 
 __all__ = [ "Board", "Target", "Sources", "Logger", "OS", "Software", "Initramfs" ]
diff --git a/scripts/os.py b/scripts/os.py
index 665b59e..3d0b93c 100644
--- a/scripts/os.py
+++ b/scripts/os.py
@@ -101,7 +101,9 @@ class OS:
     def __extract_tar(self, arch_fn, to_path):
         Logger.os("Extract to temporary directory...")
         os.makedirs(to_path, exist_ok=True)
-        self.__sudo(["tar", "xf", arch_fn], cwd=to_path)
+        my_env = os.environ.copy()
+        my_env["XZ_OPT"] = "-9 --extreme --threads=0"
+        self.__sudo(["tar", "xf", arch_fn], cwd=to_path, env=my_env)
 
     def __make_sqh(self, root_path, to_file):
         Logger.os("Create squashed archive...")
diff --git a/scripts/software.py b/scripts/software.py
index df4f630..45019a8 100644
--- a/scripts/software.py
+++ b/scripts/software.py
@@ -10,11 +10,24 @@ class Software:
             js = json.load(json_data)
             json_data.close()
         self.user = js["user"]
+        self.user_groups = js["user_groups"]
+        self.repos = js["repos"]
+        self.make_venv = js["make_venv"]
     
     def finalize(self, dir):
-        cmd_user = f"useradd -m -G wheel,video,audio,disk,usb {self.user} --password {self.user}"
-        cmd_klipper = "sudo klipper 'cd ~ && git clone https://github.com/dw-0/kiauh.git --depth=1'"
-        cmd_venv = "sudo klipper 'cd ~ && python -m venv ~/venv'"
-        self.os.chroot_ext(cmd_user, dir)
-        self.os.chroot_ext(cmd_klipper, dir)
-        self.os.chroot_ext(cmd_venv, dir)
+        home_dir = f"/home/{self.user}"
+        cmds = []
+        # create user
+        cmds.push_back(f"useradd -m -G {self.user_groups} {self.user} --password {self.user}")
+        #make password for user
+        cmds.push_back(f"echo '{self.user}:{self.user}' | chpasswd")
+        for repo in self.repos:
+            #clone repos from configuration
+            repo_dir = repo["directory"]
+            repo_url = repo["url"]
+            cmds.push_back(f"sudo -i -u klipper git clone {repo_url} --depth=1 {home_dir}/{repo_dir}")
+        if (self.make_venv):
+            # make python environment
+            cmds.push_back(f"sudo -i -u klipper python -m venv {home_dir}/venv")
+        for cmd in cmds:
+            self.os.chroot_ext(cmd, dir)
diff --git a/scripts/target.py b/scripts/target.py
index c47fe6d..a3e902e 100644
--- a/scripts/target.py
+++ b/scripts/target.py
@@ -71,7 +71,7 @@ class Target:
         self.sources.do_patch(self.board_name, self.patch_dir)
 
     def build(self, sub_target, out_dir):
-        self.source_sync()
+        #self.source_sync()
         if (not self.no_build):
             opts = self.makeopts.split(" ")
             config = ""
@@ -80,6 +80,7 @@ class Target:
                 targets = self.target
             else:
                 if (sub_target == "config"):
+                    shutil.copyfile("cfg/printer_defconfig", "build/common/kernel/arch/arm64/configs/printer_defconfig")
                     opts.append(self.defconfig)
                     opts.append(self.config_target)
                 else: