- missing source serivce on local workstation is not an API error

osc/core.py

@@ -328,7 +328,7 @@ class Serviceinfo:
             if not os.path.exists("/usr/lib/obs/service/"+name):
                 msg =  "ERROR: service is not installed!\n"
                 msg += "Maybe try this: zypper in obs-service-" + name
-                raise oscerr.APIError(msg)
+                raise oscerr.PackageNotInstalled(msg)
             c = "/usr/lib/obs/service/" + call + " --outdir " + temp_dir
             if conf.config['verbose'] > 1:
                 print "Run source service:", c

osc/oscerr.py

@@ -101,6 +101,15 @@ class OscIOError(OscBaseError):
         self.e = e
         self.msg = msg
 
+class PackageNotInstalled(OscBaseError):
+    """
+    Exception raised when a package is not installed on local system
+    """
+    def __init__(self, e, msg):
+        OscBaseError.__init__(self)
+        self.e = e
+        self.msg = msg
+
 class SignalInterrupt(Exception):
     """Exception raised on SIGTERM and SIGHUP."""