diff --git a/packages/hxtorch/package.py b/packages/hxtorch/package.py
index 5b2790e94f770b25d3bb9004b90df417a648ef8e..d29c9b237ab1e3470f63a66f887a66277f28d91d 100644
--- a/packages/hxtorch/package.py
+++ b/packages/hxtorch/package.py
@@ -177,8 +177,8 @@ class Hxtorch(WafPackage):
         args = ['--test-execnone']
         return args
 
-    def install_test(self):
-        with working_dir('spack-test', create=True):
-            old_pythonpath = os.environ.get('PYTHONPATH', '')
-            os.environ['PYTHONPATH'] = ':'.join([str(self.prefix.lib), old_pythonpath])
-            python('-v', '-X dev', '-c', 'import hxtorch; print(hxtorch.__file__)')
+    # def install_test(self):
+    #     with working_dir('spack-test', create=True):
+    #         old_pythonpath = os.environ.get('PYTHONPATH', '')
+    #         os.environ['PYTHONPATH'] = ':'.join([str(self.prefix.lib), old_pythonpath])
+    #         python('-v', '-X dev', '-c', 'import hxtorch; print(hxtorch.__file__)')
diff --git a/packages/pynn-brainscales/package.py b/packages/pynn-brainscales/package.py
index 0c289d29d1330759b22fe6af239b1c4fe94e74c9..dfb3ce5a6939575338f0ea3bc6c82cb79624b940 100644
--- a/packages/pynn-brainscales/package.py
+++ b/packages/pynn-brainscales/package.py
@@ -155,7 +155,7 @@ class PynnBrainscales(WafPackage):
         return args
 
     def install_test(self):
-        with working_dir('spack-test', create=True):
-            old_pythonpath = os.environ.get('PYTHONPATH', '')
-            os.environ['PYTHONPATH'] = ':'.join([str(self.prefix.lib), old_pythonpath])
-            python('-c', 'import pynn_brainscales; print(pynn_brainscales.__file__)')
+        # with working_dir('spack-test', create=True):
+        #     old_pythonpath = os.environ.get('PYTHONPATH', '')
+        #     os.environ['PYTHONPATH'] = ':'.join([str(self.prefix.lib), old_pythonpath])
+        #     python('-c', 'import pynn_brainscales; print(pynn_brainscales.__file__)')