diff -Naur spack-src/interface/SConstruct spack-src.patched/interface/SConstruct
--- spack-src/interface/SConstruct	2017-07-25 08:41:27.000000000 -0400
+++ spack-src.patched/interface/SConstruct	2020-07-21 13:25:41.586597330 -0400
@@ -33,7 +33,7 @@
 
   env = Environment(options=opts, ENV=os.environ)
   if not env['variant'] in ['debug', 'optimized', 'pdebug', 'profilingoptimized']:
-    print 'Illegal value for variant: %s' % env['variant']
+    print('Illegal value for variant: %s' % env['variant'])
     sys.exit(1)
   
   # Special configuration for 64 bit machines.
diff -Naur spack-src/misc/example_library_call/SConstruct spack-src.patched/misc/example_library_call/SConstruct
--- spack-src/misc/example_library_call/SConstruct	2017-07-25 08:41:27.000000000 -0400
+++ spack-src.patched/misc/example_library_call/SConstruct	2020-07-21 12:06:05.543455286 -0400
@@ -53,11 +53,11 @@
 
   env = Environment(options=opts, ENV=os.environ)
   if not env['variant'] in ['optimized','optimized_output','debug']:
-    print 'Illegal value for variant: %s' % env['variant']
+    print('Illegal value for variant: %s' % env['variant'])
     sys.exit(1)
   
   if not env['program'] in ['interfacetest']:
-    print 'Illegal value for program: %s' % env['program']
+    print('Illegal value for program: %s' % env['program'])
     sys.exit(1)
 
   # Special configuration for 64 bit machines.
diff -Naur spack-src/parallel/modified_kahip/interface/SConstruct spack-src.patched/parallel/modified_kahip/interface/SConstruct
--- spack-src/parallel/modified_kahip/interface/SConstruct	2017-07-25 08:41:27.000000000 -0400
+++ spack-src.patched/parallel/modified_kahip/interface/SConstruct	2020-07-21 12:06:36.461407930 -0400
@@ -33,7 +33,7 @@
 
   env = Environment(options=opts, ENV=os.environ)
   if not env['variant'] in ['debug', 'optimized', 'pdebug', 'profilingoptimized']:
-    print 'Illegal value for variant: %s' % env['variant']
+    print('Illegal value for variant: %s' % env['variant'])
     sys.exit(1)
   
   # Special configuration for 64 bit machines.
diff -Naur spack-src/parallel/modified_kahip/SConstruct spack-src.patched/parallel/modified_kahip/SConstruct
--- spack-src/parallel/modified_kahip/SConstruct	2017-07-25 08:41:27.000000000 -0400
+++ spack-src.patched/parallel/modified_kahip/SConstruct	2020-07-21 13:23:37.148764755 -0400
@@ -55,11 +55,11 @@
 
   env = Environment(options=opts, ENV=os.environ)
   if not env['variant'] in ['optimized','optimized_output','debug']:
-    print 'Illegal value for variant: %s' % env['variant']
+    print('Illegal value for variant: %s' % env['variant'])
     sys.exit(1)
   
   if not env['program'] in ['kaffpa', 'kaffpaE', 'partition_to_vertex_separator','library','graphchecker','label_propagation','interfacetest']:
-    print 'Illegal value for program: %s' % env['program']
+    print('Illegal value for program: %s' % env['program'])
     sys.exit(1)
 
   # Special configuration for 64 bit machines.
@@ -98,10 +98,10 @@
 
 #by D. Luxen
 #if not conf.CheckLibWithHeader('argtable2', 'argtable2.h', 'CXX'):
-        #print "argtable library not found. Exiting"
+        #print("argtable library not found. Exiting")
         #Exit(-1)
 #if not conf.CheckCXXHeader('mpi.h'):
-        #print "openmpi header not found. Exiting"
+        #print("openmpi header not found. Exiting")
         #Exit(-1)
 #
 #
diff -Naur spack-src/parallel/parallel_src/SConstruct spack-src.patched/parallel/parallel_src/SConstruct
--- spack-src/parallel/parallel_src/SConstruct	2017-07-25 08:41:27.000000000 -0400
+++ spack-src.patched/parallel/parallel_src/SConstruct	2020-07-21 13:25:13.102720046 -0400
@@ -55,11 +55,11 @@
 
   env = Environment(options=opts, ENV=os.environ)
   if not env['variant'] in ['optimized','optimized_nooutput','debug']:
-    print 'Illegal value for variant: %s' % env['variant']
+    print('Illegal value for variant: %s' % env['variant'])
     sys.exit(1)
   
   if not env['program'] in ['parhip','edge_list_to_metis_graph','friendster_list_to_metis_graph','parallel_label_compress_reps','yahoo_to_metis','parmetis_driver','graph2binary','graph2binary_external','readbgf','toolbox']:
-    print 'Illegal value for program: %s' % env['program']
+    print('Illegal value for program: %s' % env['program'])
     sys.exit(1)
 
   # Special configuration for 64 bit machines.
@@ -104,10 +104,10 @@
 
 #by D. Luxen
 #if not conf.CheckLibWithHeader('argtable2', 'argtable2.h', 'CXX'):
-	#print "argtable library not found. Exiting"
+	#print("argtable library not found. Exiting")
 	#Exit(-1)
 #if not conf.CheckCXXHeader('mpi.h'):
-	#print "openmpi header not found. Exiting"
+	#print("openmpi header not found. Exiting")
 	#Exit(-1)
 #
 #