diff --git a/pym/cl_builder.py b/pym/cl_builder.py
index fd3d922..656286e 100644
--- a/pym/cl_builder.py
+++ b/pym/cl_builder.py
@@ -30,7 +30,7 @@ from cl_utils import process,pathJoin,getRunCommands,getTupleVersion,\
 from subprocess import STDOUT,PIPE
 from cl_print import color_print
 from cl_datavars import DataVars
-from shutil import copy2 as copy_with_perm
+from shutil import copy2 as copy_with_perm, rmtree
 from cl_distr import IsoDistributive, DirectoryDistributive, \
                     DistributiveError
 from cl_template import template,iniParser
@@ -44,6 +44,7 @@ import cl_overriding
 import hashlib
 from cl_lang import lang
 lang().setLanguage(sys.modules[__name__])
+from itertools import *
 
 class printNoColor:
     def colorPrint(self,attr,fg,bg,string):
@@ -306,12 +307,28 @@ class cl_builder(color_print):
             except:
                 pass
 
+    def clearPortage(self,mp):
+        """
+        Clear portages (remove all directories exclude distfiles,
+        eclass,profiles
+        """
+        for ebuilds in ("usr/portage","var/lib/layman/calculate"):
+            for rmPath in imap(lambda x:path.join(mp,ebuilds,x),
+                ifilterfalse(('distfiles','eclass',
+                              'profiles','.git').__contains__,
+                listDirectory(path.join(mp,ebuilds)))):
+                if path.isdir(rmPath):
+                    rmtree(rmPath)
+                else:
+                    os.unlink(rmPath)
+
     def prepareSourceDistributive(self,distr):
         """Unmount all bind,proc mount points from source distribute"""
         mp = self.clVars.Get('cl_builder_path')
         createdDev = self.createUrandom(mp)
         self.dispatchConf(mp)
         self.updatePortage(mp)
+        self.clearPortage(mp)
         self.updateMan(mp)
         self.removeUrandom(mp,createdDev)