diff --git a/pisi/context.py b/pisi/context.py
index 834f3159..08093493 100644
--- a/pisi/context.py
+++ b/pisi/context.py
@@ -28,10 +28,10 @@ class BuildContext(object):
 
         def pkg_dir(self):
             packageDir = self.spec.source.name + '-' \
-            + self.spec.source.version + '-' + self.spec.source.release
+                + self.spec.source.version + '-' + self.spec.source.release
 
             return self.destdir + const.tmp_dir_suffix \
-            + '/' + packageDir
+                + '/' + packageDir
    
         def pkg_work_dir(self):
             return self.pkg_dir() + const.work_dir_suffix
@@ -49,3 +49,47 @@ class BuildContext(object):
 
     def __setattr__(self, attr, value):
         return setattr(self.__instance, attr, value)
+
+
+class InstallContext(object):
+    """Build Context Singleton"""
+
+    class ctximpl(Config.configimpl):        # singleton implementation
+
+        def __init(self):
+            super(ctximpl, self).__init__()
+
+        def setMetadataFile(self, metadatafile):
+            self.metadatafile = metadatafile
+            metadata = MetaData()
+            metadata.read(metadatafile)
+            metadata.verify()
+
+            self.metadata = metadata
+
+        def pkg_dir(self):
+            packageDir = self.metadata.package.name + '-' \
+                + self.metadata.package.version + '-' + self.metadata.package.release
+
+            return self.destdir + config.lib_dir() \
+                + '/' + packageDir
+
+        def files_dir(self):
+            return self.pkg_dir() + const.files_xml_dir_suffix
+
+        def metadata_dir(self):
+            return self.pkg_dir() + const.metadata_xml_dir_suffix
+        
+        def comar_dir(self):
+            return self.pkg_dir() + const.comar_files_dir_suffix
+
+    __instance = ctximpl()               # singleton implementation
+
+    def __init__(self, mdfile):
+        self.__instance.setMetadataFile(mdfile)
+
+    def __getattr__(self, attr):
+        return getattr(self.__instance, attr)
+
+    def __setattr__(self, attr, value):
+        return setattr(self.__instance, attr, value)