Fix update_package logic

setup.py

@@ -52,12 +52,13 @@ def session_setup():
 
 def update_package():
 
+    control = PackageEntry().load_control_from_wapt ('.')
     page = requests.get('https://www.ccleaner.com/fr-fr/ccleaner/download/slim',headers={'User-Agent':'Mozilla/5.0 (Windows NT 6.1; Win64; x64)'}).text
     bs = BeautifulSoup.BeautifulSoup(page)
     download = bs.find('p', attrs={"class": u"fs-13"}).a["href"]
     filename = download.rsplit('/',1)[1]
 
-    # on ne telecharge que si on ne l'a pas deja
+    # Only download if needed
     if not isfile(filename):
         wget(download, filename)
     else:
@@ -69,12 +70,10 @@ def update_package():
             remove_file(fn)
 
     vers = get_file_properties(filename)['ProductVersion']
-    os.chdir(os.path.dirname(__file__))
-    from waptpackage import PackageEntry
-    pe = PackageEntry()
-    pe.load_control_from_wapt(os.getcwd())
-    pe.version = vers + '-0'
-    pe.save_control_to_wapt(os.getcwd())
+
+    if Version(vers) >  Version(control['version'].split('-',1)[0]):
+        control.version = vers + '-0'
+        control.save_control_to_wapt(os.getcwd())
 
 
 if __name__ == '__main__':