diff --git a/lib/spack/spack/modules.py b/lib/spack/spack/modules.py
index 53f054094acc1dd76af564168bec00778359a83b..1a73f45b041d1d58b3017602bb79a8a14cdb6446 100644
--- a/lib/spack/spack/modules.py
+++ b/lib/spack/spack/modules.py
@@ -168,7 +168,7 @@ def parse_config_options(module_generator):
     # Get the configuration for this kind of generator
     module_configuration = copy.deepcopy(CONFIGURATION.get(
         module_generator.name, {}))
-
+    print module_configuration
     #####
     # Merge all the rules
     #####
diff --git a/lib/spack/spack/multimethod.py b/lib/spack/spack/multimethod.py
index 3cd17e796a3c98fb221bd5dd92d2a9a1b7ff6090..28ec905b18c5b74c1ff64d50be137c27ef585033 100644
--- a/lib/spack/spack/multimethod.py
+++ b/lib/spack/spack/multimethod.py
@@ -146,12 +146,12 @@ class SomePackage(Package):
               def install(self, prefix):
                   # Do default install
 
-              @when('=chaos_5_x86_64_ib')
+              @when('arch=chaos_5_x86_64_ib')
               def install(self, prefix):
                   # This will be executed instead of the default install if
                   # the package's sys_type() is chaos_5_x86_64_ib.
 
-              @when('=bgqos_0")
+              @when('arch=bgqos_0")
               def install(self, prefix):
                   # This will be executed if the package's sys_type is bgqos_0
 
diff --git a/lib/spack/spack/spec.py b/lib/spack/spack/spec.py
index 18dcc4a8370fba1e963e52830cc52ead0e67e792..678207ac40e63b2ac83b451bf16af709b7919e93 100644
--- a/lib/spack/spack/spec.py
+++ b/lib/spack/spack/spec.py
@@ -2294,7 +2294,6 @@ def parse_anonymous_spec(spec_like, pkg_name):
         try:
             anon_spec = Spec(spec_like)
             if anon_spec.name != pkg_name:
-                print anon_spec.name, pkg_name
                 raise SpecParseError(spack.parse.ParseError("","","Expected anonymous spec for package %s but found spec for package %s" % (pkg_name, anon_spec.name) ))
         except SpecParseError:
             anon_spec = Spec(pkg_name + ' ' +  spec_like)
diff --git a/lib/spack/spack/test/modules.py b/lib/spack/spack/test/modules.py
index c65d663250f7b0e8211f7db8dadf67f8718b58a8..a33c86aca29293027bbf6e23652857278035d549 100644
--- a/lib/spack/spack/test/modules.py
+++ b/lib/spack/spack/test/modules.py
@@ -49,7 +49,7 @@ def mock_open(filename, mode):
         'all': {
             'filter': {'environment_blacklist': ['CMAKE_PREFIX_PATH']}
         },
-        '=x86-linux': {
+        'arch=x86-linux': {
             'environment': {'set': {'FOO': 'foo'},
                             'unset': ['BAR']}
         }
@@ -99,26 +99,26 @@ def get_modulefile_content(self, spec):
 
     def test_simple_case(self):
         spack.modules.CONFIGURATION = configuration_autoload_direct
-        spec = spack.spec.Spec('mpich@3.0.4=x86-linux')
+        spec = spack.spec.Spec('mpich@3.0.4 arch=x86-linux')
         content = self.get_modulefile_content(spec)
         self.assertTrue('module-whatis "mpich @3.0.4"' in content)
 
     def test_autoload(self):
         spack.modules.CONFIGURATION = configuration_autoload_direct
-        spec = spack.spec.Spec('mpileaks=x86-linux')
+        spec = spack.spec.Spec('mpileaks arch=x86-linux')
         content = self.get_modulefile_content(spec)
         self.assertEqual(len([x for x in content if 'is-loaded' in x]), 2)
         self.assertEqual(len([x for x in content if 'module load ' in x]), 2)
 
         spack.modules.CONFIGURATION = configuration_autoload_all
-        spec = spack.spec.Spec('mpileaks=x86-linux')
+        spec = spack.spec.Spec('mpileaks arch=x86-linux')
         content = self.get_modulefile_content(spec)
         self.assertEqual(len([x for x in content if 'is-loaded' in x]), 5)
         self.assertEqual(len([x for x in content if 'module load ' in x]), 5)
 
     def test_alter_environment(self):
         spack.modules.CONFIGURATION = configuration_alter_environment
-        spec = spack.spec.Spec('mpileaks=x86-linux')
+        spec = spack.spec.Spec('mpileaks arch=x86-linux')
         content = self.get_modulefile_content(spec)
         self.assertEqual(
             len([x
@@ -128,7 +128,7 @@ def test_alter_environment(self):
             len([x for x in content if 'setenv FOO "foo"' in x]), 1)
         self.assertEqual(len([x for x in content if 'unsetenv BAR' in x]), 1)
 
-        spec = spack.spec.Spec('libdwarf=x64-linux')
+        spec = spack.spec.Spec('libdwarf arch=x64-linux')
         content = self.get_modulefile_content(spec)
         self.assertEqual(
             len([x
@@ -140,14 +140,14 @@ def test_alter_environment(self):
 
     def test_blacklist(self):
         spack.modules.CONFIGURATION = configuration_blacklist
-        spec = spack.spec.Spec('mpileaks=x86-linux')
+        spec = spack.spec.Spec('mpileaks arch=x86-linux')
         content = self.get_modulefile_content(spec)
         self.assertEqual(len([x for x in content if 'is-loaded' in x]), 1)
         self.assertEqual(len([x for x in content if 'module load ' in x]), 1)
 
     def test_conflicts(self):
         spack.modules.CONFIGURATION = configuration_conflicts
-        spec = spack.spec.Spec('mpileaks=x86-linux')
+        spec = spack.spec.Spec('mpileaks arch=x86-linux')
         content = self.get_modulefile_content(spec)
         self.assertEqual(
             len([x for x in content if x.startswith('conflict')]), 2)