Error gracefully on systems which don't support Hob

Hob requires pygtk 2.22 or later and systems without that will see a Python backtrace.
This small change tests whether pygtk is installed and tests which version of it is available and prints an error if pytgtk is missing or too low a version.

Cheers,
Joshua

The following changes since commit 035e146ff92236a3eda71ad71e8389737f91753b:

Hob: In building log page, fixed the issue about 'endpath' not clear when next to start build (2012-03-30 17:19:35 +0100)

are available in the git repository at:
git://github.com/incandescant/bitbake josh/hob
https://github.com/incandescant/bitbake/tree/josh/hob

Joshua Lock (1):
lib/bb/ui/hob: exit cleanly if the required pygtk version isn't
available

 lib/bb/ui/hob.py |   11 +++++++++--
 1 files changed, 9 insertions(+), 2 deletions(-)

1.7.7.6

Hob uses API from pygtk 2.22, therefore check to see whether this version is available and exit cleanly if not.

---
 lib/bb/ui/hob.py |   11 +++++++++--
 1 files changed, 9 insertions(+), 2 deletions(-)

index e72ab23..2f595cb 100755
@@ -20,10 +20,17 @@
 # with this program; if not, write to the Free Software Foundation, Inc.,
 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
-import gobject
-import gtk
 import sys
 import os
+try:
+    import gobject
+    import gtk
+    import pygtk
+    pygtk.require('2.0') # to be certain we don't have gtk+ 1.x !?!
+    if gtk.pygtk_version < (2, 22, 0):
+        sys.exit("FATAL: PyGtk version 2.22.x or later is required to use Hob")
+except:
+    sys.exit("FATAL: PyGtk (version 2.22.x or later) is required to use Hob")
 sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.dirname(__file__))))
 try:
     import bb

1.7.7.6

Apparently Belen and Giulia have been doing their hob testing on an F15 machine (fully up-to-date) and it was working OK, now it is blocked by this check - the version of PyGTK+ on there is 2.17.

Is that intended/desirable?

Cheers,
Paul

Paul Eggleton
Intel Open Source Technology Centre

Not at all, we're definitely using method calls which the API docs tell me are only available in pygtk 2.22 or newer... I guess this isn't the case.

It's beginning to look like the API is from Gtk+ 2.22 but that pygtk fell out of sync for version numbers, I'll change the check to test the Gtk+ version.

FYI the goal is to lower the required API to Gtk+ 2.18.x and pygtk 2.16.x as are shipped with CentOS 6.

Cheers,
Joshua

Joshua '贾詡' Lock
        Yocto Project "Johannes factotum"
        Intel Open Source Technology Centre

I have a more informative version of this patch which I'll submit shortly.

Joshua '贾詡' Lock
        Yocto Project "Johannes factotum"
        Intel Open Source Technology Centre