--- a/debian/patches/0005-Reproducible-build.patch	1970-01-01 01:00:00.000000000 +0100
--- b/debian/patches/0005-Reproducible-build.patch	2019-01-17 09:06:34.129547705 +0000
@@ -0,0 +1,88 @@
+Description: Make the build reproducible
+Author: Chris Lamb <lamby@debian.org>
+Last-Update: 2019-01-17
+
+--- satpy-0.11.1.orig/satpy/composites/__init__.py
++++ satpy-0.11.1/satpy/composites/__init__.py
+@@ -60,7 +60,9 @@ class IncompatibleTimes(Exception):
+ class CompositorLoader(object):
+     """Read composites using the configuration files on disk."""
+ 
+-    def __init__(self, ppp_config_dir=CONFIG_PATH):
++    def __init__(self, ppp_config_dir=None):
++        if ppp_config_dir is None:
++            ppp_config_dir = CONFIG_PATH
+         self.modifiers = {}
+         self.compositors = {}
+         self.ppp_config_dir = ppp_config_dir
+--- satpy-0.11.1.orig/satpy/config.py
++++ satpy-0.11.1/satpy/config.py
+@@ -40,7 +40,9 @@ BASE_PATH = os.path.dirname(os.path.real
+ PACKAGE_CONFIG_PATH = os.path.join(BASE_PATH, 'etc')
+ 
+ 
+-def get_environ_config_dir(default=PACKAGE_CONFIG_PATH):
++def get_environ_config_dir(default=None):
++    if default is None:
++        default = PACKAGE_CONFIG_PATH
+     return os.environ.get('PPP_CONFIG_DIR', default)
+ 
+ 
+--- satpy-0.11.1.orig/satpy/readers/__init__.py
++++ satpy-0.11.1/satpy/readers/__init__.py
+@@ -515,7 +515,7 @@ def available_readers(as_dict=False):
+ 
+ 
+ def find_files_and_readers(start_time=None, end_time=None, base_dir=None,
+-                           reader=None, sensor=None, ppp_config_dir=get_environ_config_dir(),
++                           reader=None, sensor=None, ppp_config_dir=None,
+                            filter_parameters=None, reader_kwargs=None):
+     """Find on-disk files matching the provided parameters.
+ 
+@@ -553,6 +553,8 @@ def find_files_and_readers(start_time=No
+     Returns: Dictionary mapping reader name string to list of filenames
+ 
+     """
++    if ppp_config_dir is None:
++        ppp_config_dir = get_environ_config_dir()
+     reader_files = {}
+     reader_kwargs = reader_kwargs or {}
+     filter_parameters = filter_parameters or reader_kwargs.get('filter_parameters', {})
+@@ -595,7 +597,7 @@ def find_files_and_readers(start_time=No
+ 
+ 
+ def load_readers(filenames=None, reader=None, reader_kwargs=None,
+-                 ppp_config_dir=get_environ_config_dir()):
++                 ppp_config_dir=None):
+     """Create specified readers and assign files to them.
+ 
+     Args:
+@@ -612,6 +614,8 @@ def load_readers(filenames=None, reader=
+     """
+     reader_instances = {}
+     reader_kwargs = reader_kwargs or {}
++    if ppp_config_dir is None:
++        ppp_config_dir = get_environ_config_dir()
+ 
+     if not filenames and not reader:
+         # used for an empty Scene
+--- satpy-0.11.1.orig/satpy/scene.py
++++ satpy-0.11.1/satpy/scene.py
+@@ -72,7 +72,7 @@ class Scene(MetadataObject):
+     """
+ 
+     def __init__(self, filenames=None, reader=None, filter_parameters=None, reader_kwargs=None,
+-                 ppp_config_dir=get_environ_config_dir(),
++                 ppp_config_dir=None,
+                  base_dir=None,
+                  sensor=None,
+                  start_time=None,
+@@ -107,6 +107,8 @@ class Scene(MetadataObject):
+ 
+         """
+         super(Scene, self).__init__()
++        if ppp_config_dir is None:
++            ppp_config_dir = get_environ_config_dir()
+         # Set the PPP_CONFIG_DIR in the environment in case it's used elsewhere in pytroll
+         LOG.debug("Setting 'PPP_CONFIG_DIR' to '%s'", ppp_config_dir)
+         os.environ["PPP_CONFIG_DIR"] = self.ppp_config_dir = ppp_config_dir
--- a/debian/patches/series	2019-01-17 08:52:37.443917073 +0000
--- b/debian/patches/series	2019-01-17 08:58:31.934261957 +0000
@@ -2,3 +2,4 @@
 0002-Compatibility-with-Python-3.7.patch
 0003-Skip-tests-that-require-pydecorate.patch
 0004-Fix-cf-epoch.patch
+0005-Reproducible-build.patch