From be2d47ea8bc75958851c91e544dd727638d38b35 Mon Sep 17 00:00:00 2001
From: richardjgowers <richardjgowers@gmail.com>
Date: Fri, 5 Oct 2018 11:59:00 -0500
Subject: [PATCH] made GSD unsupported in Windows

---
 package/MDAnalysis/coordinates/GSD.py    |  9 ++++++--
 package/MDAnalysis/topology/GSDParser.py |  8 ++++++-
 package/setup.py                         | 29 +++++++++++++-----------
 3 files changed, 30 insertions(+), 16 deletions(-)

diff --git a/package/MDAnalysis/coordinates/GSD.py b/package/MDAnalysis/coordinates/GSD.py
index 9db0bb3b77d..860790d763f 100644
--- a/package/MDAnalysis/coordinates/GSD.py
+++ b/package/MDAnalysis/coordinates/GSD.py
@@ -47,9 +47,11 @@
 from __future__ import absolute_import, division
 
 import numpy as np
-from . import base
-import gsd.hoomd
+import os
+if os.name != 'nt':
+    import gsd.hoomd
 
+from . import base
 
 class GSDReader(base.ReaderBase):
     """Reader for the GSD format.
@@ -70,6 +72,9 @@ def __init__(self, filename, **kwargs):
 
         .. versionadded:: 0.17.0
         """
+        if os.name == 'nt':
+            raise NotImplementedError("GSD format not supported on Windows")
+
         super(GSDReader, self).__init__(filename, **kwargs)
         self.filename = filename
         self.open_trajectory()
diff --git a/package/MDAnalysis/topology/GSDParser.py b/package/MDAnalysis/topology/GSDParser.py
index 0137b19068d..422c81820f3 100644
--- a/package/MDAnalysis/topology/GSDParser.py
+++ b/package/MDAnalysis/topology/GSDParser.py
@@ -52,7 +52,10 @@
 """
 from __future__ import absolute_import
 
-import gsd.hoomd
+import os
+if os.name != 'nt':
+    # not supported on windows
+    import gsd.hoomd
 import numpy as np
 
 from . import guessers
@@ -106,6 +109,9 @@ def parse(self, **kwargs):
 
         .. versionadded:: 0.17.0
         """
+        if os.name == 'nt':
+            raise NotImplementedError("GSD format not supported on Windows")
+
         attrs = {}
 
         with gsd.hoomd.open(self.filename,mode='rb') as t :
diff --git a/package/setup.py b/package/setup.py
index b43edc3a94b..b67280bf552 100755
--- a/package/setup.py
+++ b/package/setup.py
@@ -511,6 +511,21 @@ def dynamic_author_list():
     config = Config()
     exts, cythonfiles = extensions(config)
 
+    install_requires = [
+          'numpy>=1.10.4',
+          'biopython>=1.71',
+          'networkx>=1.0',
+          'GridDataFormats>=0.4.0',
+          'six>=1.4.0',
+          'mmtf-python>=1.0.0',
+          'joblib',
+          'scipy>=1.0.0',
+          'matplotlib>=1.5.1',
+          'mock',
+    ]
+    if not os.name == 'nt':
+        install_requires.append('gsd>=1.4.0')
+
     setup(name='MDAnalysis',
           version=RELEASE,
           description=('An object-oriented toolkit to analyze molecular dynamics '
@@ -545,19 +560,7 @@ def dynamic_author_list():
           setup_requires=[
               'numpy>=1.10.4',
           ],
-          install_requires=[
-              'gsd>=1.4.0',
-              'numpy>=1.10.4',
-              'biopython>=1.71',
-              'networkx>=1.0',
-              'GridDataFormats>=0.4.0',
-              'six>=1.4.0',
-              'mmtf-python>=1.0.0',
-              'joblib',
-              'scipy>=1.0.0',
-              'matplotlib>=1.5.1',
-              'mock',
-          ],
+          install_requires=install_requires,
           # extras can be difficult to install through setuptools and/or
           # you might prefer to use the version available through your
           # packaging system