[gnome-ostree] Bump to 3.8, update to use archive-v2 by default

[Colin Walters <walters src gnome org>]

commit 6b526d393de835f2941fc88aa470dcdc75543cb6
Author: Colin Walters <walters verbum org>
Date:   Sun Oct 14 17:24:19 2012 -0400

    Bump to 3.8, update to use archive-v2 by default

 manifest.json                       |    4 ++--
 src/ostbuild/pyostbuild/builtins.py |    2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/manifest.json b/manifest.json
index ec88fdb..662dc0b 100644
--- a/manifest.json
+++ b/manifest.json
@@ -1,12 +1,12 @@
 {
   "00ostbuild-manifest-version": 0,
 
-  "prefix": "gnomeos-3.6",
+  "prefix": "gnomeos-3.8",
   "architectures": ["i686"],
   "base": {
             "name": "yocto",
 	    "src": "cgwalters:poky",
-            "branch": "gnomeos-3.6"
+            "branch": "gnomeos-3.8"
           },
 
   "config-opts": ["--disable-static", "--disable-silent-rules"],
diff --git a/src/ostbuild/pyostbuild/builtins.py b/src/ostbuild/pyostbuild/builtins.py
index 52e3202..cd203bb 100755
--- a/src/ostbuild/pyostbuild/builtins.py
+++ b/src/ostbuild/pyostbuild/builtins.py
@@ -173,7 +173,7 @@ class Builtin(object):
             self.repo = os.path.join(self.workdir, 'repo')
             if not os.path.isdir(os.path.join(self.repo, 'objects')):
                 fileutil.ensure_dir(self.repo)
-                run_sync(['ostree', '--repo=' + self.repo, 'init', '--mode=archive-z'])
+                run_sync(['ostree', '--repo=' + self.repo, 'init', '--mode=archive-z2'])
 
     def parse_prefix(self, prefix):
         if prefix is not None: