* implement a permanent flag to prevent removal of precious files

README

@@ -11,5 +11,6 @@ Main features
  - Integrates both low-level and high-level package operations.
  - Efficient and small
  - Framework approach to build applications and tools upon
- - Comprehensive CLI and a user-friendly qt-based GUI
+ - Comprehensive CLI and a user-friendly qt-based GUI (GUI
+   distributed separately)
  - Extremely simple package construction

pisi/atomicoperations.py

@@ -374,6 +374,10 @@ class Remove(AtomicOperation):
         # usage. Currently we'are doing it like rpm does, saving
         # with a prefix and leaving the user to edit it. In the future
         # we'll have a plan for these configuration files.
+        if fileinfo.permanent:
+            # do not remove precious files :)
+            # just write anything permanent="true" for instance
+            return
         if fileinfo.type == "config":
             if os.path.isfile(fpath):
                 os.rename(fpath, fpath + ".oldconfig")

pisi/files.py

@@ -29,6 +29,7 @@ class FileInfo:
     t_Type = [ autoxml.String, autoxml.mandatory ]
     t_Size = [ autoxml.Long, autoxml.optional ]
     t_Hash = [ autoxml.String, autoxml.optional, "SHA1Sum" ]
+    t_Permanent = [ autoxml.String, autoxml.optional ]
 
     def __str__(self):
         s = "%s, type: %s, size: %s, sha1sum: %s" %  (self.path, self.type,