Modified: trunk/dports/science/lalxml/Portfile (100315 => 100316)

--- trunk/dports/science/lalxml/Portfile	2012-12-08 07:07:20 UTC (rev 100315)
+++ trunk/dports/science/lalxml/Portfile	2012-12-08 07:07:26 UTC (rev 100316)
@@ -1,6 +1,7 @@
 # $Id$
 
 PortSystem    1.0
+PortGroup     active_variants 1.1
 
 name          lalxml
 version       1.1.5
@@ -37,17 +38,7 @@
 use_parallel_build yes
 
 variant swig_python description {Build python SWIG bindings} {
-  pre-fetch {
-    if { ![file exists ${prefix}/lib/python2.7/site-packages/lal/_lal.so] } {
-      ui_error "
-****
-**** LALXML +swig_python requires LAL +swig_python, please
-**** reinstall LAL with the +swig_python variant.
-****
-"
-    error "${name} +swig_python requires lal +swig_python"
-    }
-  }
+  require_active_variants lal swig_python
   depends_build-append  port:swig-python \
                         port:py27-numpy
   configure.args-append --enable-swig-python