--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mercurial/utils/resourceutil.py	Thu Nov 14 11:52:22 2019 -0800
@@ -0,0 +1,28 @@
+# resourceutil.py - utility for looking up resources
+#
+#  Copyright 2005 K. Thananchayan <thananck@yahoo.com>
+#  Copyright 2005-2007 Matt Mackall <mpm@selenic.com>
+#  Copyright 2006 Vadim Gelfer <vadim.gelfer@gmail.com>
+#
+# This software may be used and distributed according to the terms of the
+# GNU General Public License version 2 or any later version.
+
+from __future__ import absolute_import
+
+import imp
+import sys
+
+from .. import pycompat
+
+
+def mainfrozen():
+    """return True if we are a frozen executable.
+
+    The code supports py2exe (most common, Windows only) and tools/freeze
+    (portable, not much used).
+    """
+    return (
+        pycompat.safehasattr(sys, "frozen")
+        or pycompat.safehasattr(sys, "importers")  # new py2exe
+        or imp.is_frozen("__main__")  # old py2exe
+    )  # tools/freeze