#
#
# patch "tracvc/mtn/automate.py"
#  from [195fa3542464fd9b5a8cfa2a5acf8e8ce3cff4a8]
#    to [9a4ae3091e1ab0f865a560e0504964fbefa361a8]
# 
# patch "tracvc/mtn/backend.py"
#  from [7a16784ea1d5f64d834e3e4d58d9c50bfc36d252]
#    to [b311743056246f8336b002f3e26a6a38a67a65af]
#
============================================================
--- tracvc/mtn/automate.py	195fa3542464fd9b5a8cfa2a5acf8e8ce3cff4a8
+++ tracvc/mtn/automate.py	9a4ae3091e1ab0f865a560e0504964fbefa361a8
@@ -330,7 +330,11 @@ class MTN(object):
                 revs.append(values[0])
         return revs
 
+    def interface_version(self):
+        """Returns the automation interface version."""
+        return self.automate.command("interface_version").strip()
 
+
 class Changeset(object):
     """Represents a monotone changeset in parsed form."""
 
============================================================
--- tracvc/mtn/backend.py	7a16784ea1d5f64d834e3e4d58d9c50bfc36d252
+++ tracvc/mtn/backend.py	b311743056246f8336b002f3e26a6a38a67a65af
@@ -32,6 +32,7 @@ from trac import __version__ as trac_ver
 from trac.core import Component, implements, TracError
 from trac.config import Option, ListOption
 from trac import __version__ as trac_version
+from tracvc.mtn import __version__ as tracmtn_version
 from pkg_resources import parse_version
 from time import strptime
 from tracvc.mtn.automate import MTN, AutomateException
@@ -47,6 +48,12 @@ REVID_RULE = re.compile(r'^[0-9a-f]{40}$
 DATE_RULE = re.compile(r'\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}')
 REVID_RULE = re.compile(r'^[0-9a-f]{40}$')
 
+INTERFACE_VERSIONS = {
+    '2.0': '0.26', '2.1': '0.27', '2.2': '0.28',
+    '3.0': '0.29', '3.1': '0.30',
+    '4.0': '0.31-0.33', '4.1': '0.34', '4.3': '0.35',
+}
+
 class MonotoneConnector(Component):
     """
     Provides this plugin's functionality.
@@ -65,6 +72,7 @@ class MonotoneConnector(Component):
     def __init__(self):
         Component.__init__(self)
         self.repos = {}
+        self.version = None
     
     def get_supported_types(self):
         """
@@ -109,6 +117,16 @@ class MonotoneConnector(Component):
             self.repos[path] = MonotoneRepository(path, self.log,
                                 self.mtn_binary, self.cachespec,
                                 self.get_revprops())
+        # this is the main entry point for users of this plugin, so let's set
+        # version information here
+        if not self.version:
+            interface_version = self.repos[path].interface_version()
+            monotone_version = INTERFACE_VERSIONS.get(interface_version, None)
+            if monotone_version:
+               interface_version += " [guessed version %s]" % monotone_version
+            self.version = "%s (Monotone automation interface %s)" % \
+                           (tracmtn_version, interface_version)
+            self.env.systeminfo.append(('TracMonotone', self.version))
         return self.repos[path]
 
     # IWikiSyntaxProvider methods
@@ -407,7 +425,13 @@ class MonotoneRepository(Repository):
         """
         return dates(self.mtn.certs(rev).get('date', []))
 
+    def interface_version(self):
+        """
+        Returns the automation interface version string.
+        """
+        return self.mtn.interface_version()
 
+
 class MonotoneNode(Node):
     """
     Represents a directory or file in the repository at a given