diff --git a/packages/hxtorch/package.py b/packages/hxtorch/package.py
index 240e09ee79631d84463b0b472a3a8bc513dc2dbf..efd1b7299af2d42c8f94bb869e614465582c6907 100644
--- a/packages/hxtorch/package.py
+++ b/packages/hxtorch/package.py
@@ -166,5 +166,15 @@ class Hxtorch(WafPackage):
 
     def build_args(self):
         args = ['--keep', '--test-execnone', '-v']
+        return args
+
+    def build_test(self):
+        self.waf('install', '--test-execall')
 
+    def install_args(self):
+        args = ['--test-execnone']
         return args
+
+    def install_test(self):
+        with working_dir('spack-test', create=True):
+            python('-c', 'import hxtorch; print(hxtorch.__file__)')
diff --git a/packages/oppulance/package.py b/packages/oppulance/package.py
index 09e39753ed757597c86b2f3370d8ab0bc8a3deaf..697e3e794afbb2036f01814c65050ba4eed866a0 100644
--- a/packages/oppulance/package.py
+++ b/packages/oppulance/package.py
@@ -85,3 +85,9 @@ class Oppulance(Package):
         bash('ci/00_build_install_libstdc++.sh')
         mkdirp(spec.prefix)
         install_tree('install/.', spec.prefix)
+
+    @run_after('install')
+    @on_package_attributes(run_tests=True)
+    def check_install(self):
+        ppu_gcc = which('powerpc-ppu-gcc')
+        ppu_gcc('--version')
diff --git a/packages/pynn-brainscales/package.py b/packages/pynn-brainscales/package.py
index d90a7e37c49fcd672bb0797d4237215efa153d6a..49bb2e5909c6a6b21e3496c9423048e6b036fbdd 100644
--- a/packages/pynn-brainscales/package.py
+++ b/packages/pynn-brainscales/package.py
@@ -145,5 +145,15 @@ class PynnBrainscales(WafPackage):
 
     def build_args(self):
         args = ['--keep', '--test-execnone', '-v']
+        return args
+
+    def build_test(self):
+        self.waf('install', '--test-execall')
 
+    def install_args(self):
+        args = ['--test-execnone']
         return args
+
+    def install_test(self):
+        with working_dir('spack-test', create=True):
+            python('-c', 'import pynn_brainscales; print(pynn_brainscales.__file__)')