Update meta packag

setup.py

@@ -7,6 +7,81 @@
     Learn more under: https://pyscaffold.org/
 """
 from setuptools import setup
+from setuptools.command.build_ext import build_ext as _build_ext
+from setuptools.command.sdist import sdist as _sdist
+from setuptools.extension import Extension
+import numpy
+
+
+# list of C/Cython extensions
+def get_ext_modules(ext):
+    return [
+        Extension(
+            "pytesmo.time_series.filters",
+            ["src/pytesmo/time_series/filters" + ext],
+            include_dirs=[numpy.get_include()],
+            define_macros=[("NPY_NO_DEPRECATED_API", "NPY_1_7_API_VERSION")],
+        ),
+        Extension(
+            "pytesmo.metrics._fast",
+            ["src/pytesmo/metrics/_fast" + ext],
+            include_dirs=[numpy.get_include()],
+            define_macros=[("NPY_NO_DEPRECATED_API", "NPY_1_7_API_VERSION")],
+        ),
+        Extension(
+            "pytesmo.metrics._fast_pairwise",
+            ["src/pytesmo/metrics/_fast_pairwise" + ext],
+            include_dirs=[numpy.get_include()],
+            define_macros=[("NPY_NO_DEPRECATED_API", "NPY_1_7_API_VERSION")],
+        ),
+    ]
+
+
+# defining a custom cythonize function that sets all the options we want and
+# that can be reused for the different options
+def cythonize_extensions():
+    from Cython.Build import cythonize
+
+    cythonize(
+        get_ext_modules(".pyx"),
+        compiler_directives={
+            "embedsignature": True,
+            "language_level": 3,
+            # "warn.undeclared": True,
+            # "warn.maybe_unitialized": True,
+            "warn.unused": True,
+            # "warn.unused_arg": True,
+            # "warn.unused_result": True,
+        },
+        # include_path=[numpy.get_include()],
+    )
+
+
+class CythonizeMixin(object):
+
+    user_options = [
+        ("cythonize", None, "recreate the c extionsions with cython")
+    ]
+
+    def initialize_options(self):
+        super().initialize_options()
+        self.cythonize = False
+
+    def run(self):
+        if self.cythonize:
+            cythonize_extensions()
+        super().run()
+
+
+class sdist(CythonizeMixin, _sdist):
+    user_options = getattr(_sdist, 'user_options', [])\
+               + CythonizeMixin.user_options
+
+
+class build_ext(CythonizeMixin, _build_ext):
+    user_options = getattr(_build_ext, 'user_options', [])\
+               + CythonizeMixin.user_options
+
 
 if __name__ == "__main__":
     try:

src/pytesmo/__init__.py

@@ -14,3 +14,15 @@
     __version__ = "unknown"
 finally:
     del version, PackageNotFoundError
+
+# custom code not generated by PyScaffold
+__all__ = [
+    "metrics",
+    "scaling",
+    "temporal_matching",
+    "timedate",
+    "time_series",
+    "grid",
+    "colormaps",
+    "validation_framework"
+]