clean install directory if it already exists during recipe's installation

slapos/recipe/cmmi/__init__.py

@@ -335,11 +335,12 @@ class Recipe(object):
             compile_dir = self.options['path']
 
         current_dir = os.getcwd()
-        try:
-            os.mkdir(self.options['default-location'])
-        except OSError as e:
-            if e.errno == errno.EEXIST:
-                pass
+        location = self.options['default-location']
+        # Clean the install directory if it already exists as it is
+        # a remain from a previous failed installation
+        if os.path.exists(location):
+          shutil.rmtree(location)
+        os.mkdir(location)
         os.chdir(compile_dir)
         tmp_path = self.environ['TMP']
         shutil.rmtree(tmp_path, True)
@@ -451,11 +452,11 @@ class Recipe(object):
                 del self.options['compile-directory']
 
         if self.options['shared'] == '':
-            parts.append(self.options['default-location'])
+            parts.append(location)
 
-        self.fix_shebang(self.options['default-location'])
+        self.fix_shebang(location)
         if self.options['shared']:
-            slapos.recipe.downloadunpacked.make_read_only_recursively(self.options['default-location'])
+            slapos.recipe.downloadunpacked.make_read_only_recursively(location)
         return parts
 
     def fix_shebang(self, location):