exporting patch:
# HG changeset patch
# User John Chilton <jmchilton@gmail.com>
# Date 1294805231 21600
# Node ID edc242c07824ea900ab72dbaf22f338b1288d275
# Parent  b5c64c4db5eadaed6a06e99960152cd4965fb184
Minor refactoring of the way lib/galaxy/config.py configures eggs for
custom job runners meant to increase flexibility for new job runners.

diff -r b5c64c4db5ea -r edc242c07824 lib/galaxy/config.py
--- a/lib/galaxy/config.py	Tue Jan 11 20:25:19 2011 -0500
+++ b/lib/galaxy/config.py	Tue Jan 11 22:07:11 2011 -0600
@@ -185,14 +185,15 @@
                 raise ConfigurationError("File not found: %s" % path )
         # Check job runners so the admin can scramble dependent egg.
         if self.start_job_runners is not None:
-            runner_to_egg = dict( pbs = 'pbs_python', sge = 'DRMAA_python', drmaa = 'drmaa' )
+            runner_to_eggs = dict( pbs = ['pbs_python'], sge = ['DRMAA_python'], drmaa = ['drmaa'] )
             for runner in self.start_job_runners.split( ',' ):
-                try:
-                    pkg_resources.require( runner_to_egg[runner] )
-                except eggs.EggNotFetchable, e:
-                    raise eggs.EggNotFetchable( 'You must scramble the %s egg to use the %s job runner.  Instructions are available at:\n  http://bitbucket.org/galaxy/galaxy-central/wiki/Config/Cluster' % ( runner_to_egg[runner], runner ) )
-                except KeyError:
+                if not runner in runner_to_eggs:
                     raise Exception( 'No such job runner: %s.  Please double-check the value of start_job_runners in universe_wsgi.ini' % runner )
+                for egg in runner_to_eggs[runner]:
+                    try:
+                        pkg_resources.require( egg )
+                    except eggs.EggNotFetchable, e:
+                        raise eggs.EggNotFetchable( 'You must scramble the %s egg to use the %s job runner.  Instructions are available at:\n  http://bitbucket.org/galaxy/galaxy-central/wiki/Config/Cluster' % ( egg, runner ) )
         # Check for deprecated options.
         for key in self.config_dict.keys():
             if key in self.deprecated_options: