Add replace attribute to Path:

A new build which sets 'replace' for a config file will overwrite the file
installed on the system regardless of its status:

<Path fileType="config" replace="true">/etc/hede.conf</Path>

Tested on a simple install/reinstall, works well.
Should test further with delta updates before applying.

pisi-spec.dtd

@@ -117,6 +117,7 @@ suck anyway -->
 	(executable|library|data|config|doc|man|info|localedata|header)
 	#REQUIRED>
 <!ATTLIST Path permanent (false|true) #IMPLIED>
+<!ATTLIST Path replace (false|true) #IMPLIED>
 
 
 <!-- History Section -->

pisi-spec.rng

@@ -1521,6 +1521,14 @@
                     </choice>
                 </attribute>
             </optional>
+            <optional>
+                <attribute name="replace">
+                    <choice>
+                        <value>false</value>
+                        <value>true</value>
+                    </choice>
+                </attribute>
+            </optional>
         </group>
     </define>
 

pisi/atomicoperations.py

@@ -204,7 +204,7 @@ class Install(AtomicOperation):
                 return True
 
             return not pkg in map(lambda x:x.package, self.pkginfo.conflicts)
-        
+
         # check file conflicts
         file_conflicts = []
         for f in self.files.list:
@@ -390,8 +390,8 @@ class Install(AtomicOperation):
                     Remove.remove_file(old_fileinfo[path], self.pkginfo.name)
 
         if self.reinstall():
-            # get 'config' typed file objects
-            new = filter(lambda x: x.type == 'config', self.files.list)
+            # get 'config' typed file objects if replace is not set
+            new = filter(lambda x: x.type == 'config' and not x.replace, self.files.list)
             old = filter(lambda x: x.type == 'config', self.old_files.list)
 
             # get config path lists
@@ -530,7 +530,7 @@ class Remove(AtomicOperation):
 
         if fileinfo.permanent and not remove_permanent:
             return
-        
+
         fpath = pisi.util.join_path(ctx.config.dest_dir(), fileinfo.path)
 
         historydb = pisi.db.historydb.HistoryDB()

pisi/files.py

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

pisi/specfile.py

@@ -127,6 +127,7 @@ class Path:
     s_Path = [autoxml.String, autoxml.mandatory]
     a_fileType =  [autoxml.String, autoxml.optional]
     a_permanent =  [autoxml.String, autoxml.optional]
+    a_replace =  [autoxml.String, autoxml.optional]
 
     def __str__(self):
         s = self.path