Split exception description from exception traceback

When traceback will be part of the exception message split the
description from traceback. Description is used in name of the
bug in Bugzilla.
This is useful when saving exception in exception handler and
raising this exception elsewhere (subprocess exception).

pyanaconda/exception.py

@@ -50,6 +50,25 @@
 import logging
 log = logging.getLogger("anaconda")
 
+class AnacondaReverseExceptionDump(ReverseExceptionDump):
+
+    @property
+    def desc(self):
+        """
+        When traceback will be part of the exception message split the
+        description from traceback. Description is used in name of the
+        bug in Bugzilla.
+        This is useful when saving exception in exception handler and
+        raising this exception elsewhere (subprocess exception).
+
+        :return: Exception description (bug name)
+        :rtype: str
+        """
+        if self.type and self.value:
+            return traceback.format_exception_only(self.type, self.value)[0].split("\nTraceback")[0].strip()
+        else:
+            return ""
+
 class AnacondaExceptionHandler(ExceptionHandler):
 
     def __init__(self, confObj, intfClass, exnClass, tty_num, gui_lock, interactive):
@@ -273,7 +292,7 @@ def initExceptionHandling(anaconda):
 
     interactive = not anaconda.displayMode == 'c'
     handler = AnacondaExceptionHandler(conf, anaconda.intf.meh_interface,
-                                       ReverseExceptionDump, anaconda.intf.tty_num,
+                                       AnacondaReverseExceptionDump, anaconda.intf.tty_num,
                                        anaconda.gui_initialized, interactive)
     handler.install(anaconda)