Job script template from Galaxy

pulsar/managers/util/job_script/DEFAULT_JOB_FILE_TEMPLATE.sh

 #!$shell
 
+$headers
+
 _galaxy_setup_environment() {
     local _use_framework_galaxy="$1"
     if [ "$GALAXY_LIB" != "None" -a "$_use_framework_galaxy" = "True" ]; then
@@ -11,18 +13,17 @@ _galaxy_setup_environment() {
         export PYTHONPATH
     fi
     $env_setup_commands
-    if [ "$GALAXY_VIRTUAL_ENV" != "None" -a  "$_use_framework_galaxy" = "True" \
-         -a -f "$GALAXY_VIRTUAL_ENV/bin/activate" \
+    if [ "$GALAXY_VIRTUAL_ENV" != "None" -a -f "$GALAXY_VIRTUAL_ENV/bin/activate" \
          -a "`command -v python`" != "$GALAXY_VIRTUAL_ENV/bin/python" ]; then
         . "$GALAXY_VIRTUAL_ENV/bin/activate"
     fi
 }
 
-$headers
 $integrity_injection
 $slots_statement
 export GALAXY_SLOTS
 GALAXY_VIRTUAL_ENV="$galaxy_virtual_env"
+_GALAXY_VIRTUAL_ENV="$galaxy_virtual_env"
 PRESERVE_GALAXY_ENVIRONMENT="$preserve_python_environment"
 GALAXY_LIB="$galaxy_lib"
 _galaxy_setup_environment "$PRESERVE_GALAXY_ENVIRONMENT"