[PATCH 2/3] oe/gpg_sign: check for python-pexpect when using local signing

[Markus Lehtonen <markus.lehtonen@linux.intel.com>]

Signed-off-by: Markus Lehtonen <markus.lehtonen@linux.intel.com>
---
 meta/lib/oe/gpg_sign.py | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/meta/lib/oe/gpg_sign.py b/meta/lib/oe/gpg_sign.py
index 8832ea9..ea35564 100644
--- a/meta/lib/oe/gpg_sign.py
+++ b/meta/lib/oe/gpg_sign.py
@@ -17,13 +17,17 @@ class LocalSigner(object):
     @classmethod
     def check_sanity(cls, d, keyid, passphrase_file):
         """(Pre-)check the sanity of a configuration"""
-        msg = ""
+        msgs = []
+        try:
+            import pexpect
+        except ImportError:
+            msgs.append("Please install python-pexpect that is needed by lcocal gpg signing.")
         missing_vars = ['%(keyid)s'] if not keyid else []
         if not passphrase_file:
             missing_vars.append('%(passphrase_file)s')
         if missing_vars:
-            msg += "You need to define " + ' and '.join(missing_vars) + " in the config."
-        return msg
+            msgs.append("You need to define " + ' and '.join(missing_vars) + " in the config.")
+        return ' '.join(msgs)
 
     def export_pubkey(self, output_file):
         """Export GPG public key to a file"""
-- 
2.6.2