Compatibility with pyinstaller

eos/utils/pyinst_support.py

@@ -0,0 +1,39 @@
+"""
+Slightly modified version of function taken from here:
+https://github.com/pyinstaller/pyinstaller/issues/1905#issuecomment-525221546
+"""
+
+
+import pkgutil
+
+
+def iterNamespace(name, path):
+    """Pyinstaller-compatible namespace iteration.
+
+    Yields the name of all modules found at a given Fully-qualified path.
+
+    To have it running with pyinstaller, it requires to ensure a hook inject the
+    "hidden" modules from your plugins folder inside the executable:
+
+    - if your plugins are under the ``myappname/pluginfolder`` module
+    - create a file ``specs/hook-<myappname.pluginfolder>.py``
+    - content of this file should be:
+
+        .. code-block:: python
+
+            from PyInstaller.utils.hooks import collect_submodules
+            hiddenimports = collect_submodules('<myappname.pluginfolder>')
+    """
+    prefix = name + "."
+    for p in pkgutil.iter_modules(path, prefix):
+        yield p[1]
+
+    # special handling when the package is bundled with PyInstaller 3.5
+    # See https://github.com/pyinstaller/pyinstaller/issues/1905#issuecomment-445787510
+    toc = set()
+    for importer in pkgutil.iter_importers(name.partition(".")[0]):
+        if hasattr(importer, 'toc'):
+            toc |= importer.toc
+    for name in toc:
+        if name.startswith(prefix):
+            yield name