diff -r fb621e89f9f1 -r 800c48d0e3c1 sbin/sync/fabfile.py
--- a/sbin/sync/fabfile.py	Thu Nov 29 17:20:45 2012 +0100
+++ b/sbin/sync/fabfile.py	Thu Nov 29 18:23:51 2012 +0100
@@ -21,10 +21,10 @@
     if os.path.isdir(path):
         shutil.rmtree(path, ignore_errors=True)
 
-def do_export_version(path, version, *export_keys):
-    print("Export version %s with keys %s" % (str(version), repr(export_keys)))
+def do_export_version(path, **export_keys):
+    print("Export version %s " % (repr(export_keys)))
 
-    for export_key in export_keys:
+    for export_key, version in export_keys.items():
         export_path = os.path.join(path,export_key)
         
         repo_url = env.repos[export_key]
@@ -40,7 +40,7 @@
         with lcd(clone_path):
             local("hg archive -r \'%s\' \"%s\"" % (str(version),export_path))
     
-    print("Export version %s done"%str(version))
+    print("Export version %s done"%repr(export_keys))
 
     
 def get_remote_env(remotepath, remotevirtualenvpath, platform_web_module, settings_key):
@@ -120,11 +120,13 @@
     run("rm \"%s\"" % path)
         
 
-def install_build(remotepath, remotevirtualenvpath):
+def install_build(remotepath, remotevirtualenvpath, module_to_uninstall= None):
     print("Install build %s in %s" % (remotepath, remotevirtualenvpath))
     activate_path = os.path.join(remotevirtualenvpath, "bin/activate")
     
     with prefix("source %s" % activate_path):
+        if module_to_uninstall:
+            run("pip uninstall %s" % module_to_uninstall)
         run("pip install \"%s\"" % remotepath)
 
 def collectstatic(remotepath, remotevirtualenvpath, platform_web_module):
@@ -168,14 +170,14 @@
     if not exists(remote_config_path, verbose=True):
         upload_template(template_path, remote_config_path, context=context)
 
-def export_version(version, *args):
-    print("export version %s for %s" % (str(version), args))
+def export_version(**kwargs):
+    print("export version %s for %s" % (repr(kwargs)))
     
-    export_path = get_export_path(version)
+    export_path = get_export_path("_".join(["%s_%s" % (k,v) for k,v in kwargs.items()]))
     
     clean_export_folder(export_path)
     
-    do_export_version(export_path,version, *args)
+    do_export_version(export_path,**kwargs)
     
     return export_path
 
@@ -203,14 +205,14 @@
     build_src(src_path)
     (_,version_str) = get_src_version(src_path)
     build_path = os.path.join(src_path,"dist","ldt-%s.tar.gz" % version_str)
-    sync_install_build(build_path)
+    sync_install_build(build_path, 'ldt')
         
 
-def sync_install_build(build_path):
+def sync_install_build(build_path, module_to_uninstall=None):
     res_trans = None
     try:
         res_trans = sync_build(build_path)
-        install_build(res_trans[0], env.remote_path['virtualenv'])        
+        install_build(res_trans[0], env.remote_path['virtualenv'], module_to_uninstall)        
     finally:
         if res_trans:
             remove_build(res_trans[0])
@@ -248,7 +250,7 @@
 @task
 def sync_web(version):
     print(green("sync web with version %s" % version))
-    export_path = export_version(version, 'web')
+    export_path = export_version(web=version)
     export_path_full = os.path.join(export_path,'web')
     do_sync_web(version, export_path_full)
     create_config(export_path_full)
@@ -258,7 +260,7 @@
 @task
 def sync_ldt(version):
     print(green("sync ldt with version %s" % version))
-    export_path = export_version(version, 'ldt')
+    export_path = export_version(ldt=version)
     export_path_full = os.path.join(export_path,'ldt')
     do_sync_ldt(version, export_path_full)
     clean_export_folder(export_path)
@@ -267,7 +269,7 @@
 @task
 def update_lib(version, package):
     print(green("update ldt with version %s" % version))
-    export_path = export_version(version,'web')
+    export_path = export_version(web=version)
     export_path_full = os.path.join(export_path,'web')
     lib_path = os.path.join(export_path_full, "virtualenv", "res", "lib")
     
@@ -283,9 +285,9 @@
     relaunch_server()
     
 @task
-def sync_platform(version):
+def sync_platform(version_web, version_ldt):
     print(green("sync platform with version %s" % version))
-    export_path = export_version(version, 'ldt', 'web')
+    export_path = export_version(ldt=version_ldt, web=version_web)
     export_path_ldt = os.path.join(export_path,'ldt')
     export_path_web = os.path.join(export_path,'web')
     do_sync_ldt(version, export_path_ldt)
@@ -297,7 +299,7 @@
 @task
 def create_virtualenv(version):
     print(green("create virtualenv with version %s" % version))
-    export_path = export_version(version, 'web')
+    export_path = export_version(web=version)
     export_path_web = os.path.join(export_path,'web')
     venv_remote_export_path = ""
     try: