This is where it actually needs to go!

packages/py-spinnfrontendcommon/package.py

@@ -39,16 +39,9 @@ class PySpinnfrontendcommon(PythonPackage):
         # the java code!
         python_spec = find("python@3.7:")[0]
         python_version = ".".join(str(v) for v in python_spec.version.version[0:2])
-        python_lib = f"python{python_version}"
-        site_packages = prefix.lib.join(python_lib).join("site-packages")
-        java_folder = site_packages.JavaSpiNNaker.join("SpiNNaker-front-end").target
+        python_lib = prefix.lib.join(f"python{python_version}")
+        java_folder = python_lib.JavaSpiNNaker.join("SpiNNaker-front-end").target
         java_exe = java_folder.join("spinnaker-exe.jar")
         makedirs(java_folder)
         urlretrieve(_JAR_URL, java_exe)
         tty.debug(f"Received {java_exe} from {_JAR_URL}")
-
-        # Test where things are now installed
-        tty.debug(f"Checking contents of {prefix}")
-        for root, dirnames, filenames in os.walk(prefix):
-            for filename in filenames:
-                tty.debug(os.path.join(root, filename))