Add __main__.py to define commands.

python/dune/CMakeLists.txt

@@ -4,6 +4,7 @@ add_subdirectory(typeregistry)
 
 add_python_targets(dune
   __init__
+  __main__
   create
   packagemetadata
   plotting

python/dune/__main__.py

+import sys, os
+from argparse import Action, ArgumentParser
+from .packagemetadata import get_dune_py_dir
+
+def configure():
+    # force a reconfiguration of dune-py by deleting tagfile
+    tagfile = os.path.join(get_dune_py_dir(), ".noconfigure")
+    if os.path.exists(tagfile):
+        os.remove(tagfile)
+
+
+if __name__ == '__main__':
+    parser = ArgumentParser(description='Execute DUNE commands', prog='dune')
+    parser.add_argument('command', choices=['configure'], help="Command to be executed")
+
+    args = parser.parse_args()
+
+    if args.command == 'configure':
+        print('Configure dune-py module')
+        configure()

python/dune/packagemetadata.py

@@ -371,11 +371,7 @@ def metaData(version=None, dependencyCheck=True):
     class dunepyinstall(build_py):
         def run(self):
             build_py.run(self)
-
-            # force a reconfiguration of dune-py by deleting tagfile
-            tagfile = os.path.join(get_dune_py_dir(), ".noconfigure")
-            if os.path.exists(tagfile):
-                os.remove(tagfile)
+            configure()
 
     setupParams['cmdclass'] = {'build_py': dunepyinstall}