From a57ea79bf85cc6ee1be29a7d13a3d7ca93d09a69 Mon Sep 17 00:00:00 2001
From: Ivan Kravets <me@ikravets.com>
Date: Fri, 14 Feb 2020 13:49:41 +0200
Subject: [PATCH] Froze "marshmallow" dependency to 2.X for Python 2 // Resolve
 #3380

---
 HISTORY.rst | 1 +
 setup.py    | 5 ++++-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/HISTORY.rst b/HISTORY.rst
index 0df431e2..6aa9204d 100644
--- a/HISTORY.rst
+++ b/HISTORY.rst
@@ -10,6 +10,7 @@ PlatformIO Core 4
 ~~~~~~~~~~~~~~~~~~
 
 * Improved support of PIO Home on card-sized PC (Raspberry Pi, etc.) (`issue #3313 <https://github.com/platformio/platformio-core/issues/3313>`_)
+* Froze "marshmallow" dependency to 2.X for Python 2 (`issue #3380 <https://github.com/platformio/platformio-core/issues/3380>`_)
 * Fixed "TypeError: unsupported operand type(s)" when system environment variable is used by project configuration parser (`issue #3377 <https://github.com/platformio/platformio-core/issues/3377>`_)
 
 
diff --git a/setup.py b/setup.py
index 6413ffbd..edccd3b9 100644
--- a/setup.py
+++ b/setup.py
@@ -23,6 +23,8 @@ from platformio import (
     __url__,
     __version__,
 )
+from platformio.compat import PY2
+
 
 install_requires = [
     "bottle<0.13",
@@ -33,9 +35,10 @@ install_requires = [
     "semantic_version>=2.8.1,<3",
     "tabulate>=0.8.3,<1",
     "pyelftools>=0.25,<1",
-    "marshmallow>=2.20.5",
+    "marshmallow%s" % (">=2,<3" if PY2 else ">=3"),
 ]
 
+
 setup(
     name=__title__,
     version=__version__,