Add cli and version.py

nancy/__init__.py

@@ -1,8 +1,7 @@
 import sqlite3
 
-from . import db
-
-__version__ = "0.0.1"
+from .db import init
+from .version import __version__
 
 
 # Calling code will build up a large DAG then at the very last step, call
@@ -10,7 +9,7 @@ __version__ = "0.0.1"
 # data by asking the user for an output dir. However, we need a database
 # initialized in order to build up the DAG in the first place, so here we
 # initialize an in-memory database to use until we have an output directory.
-_conn = db.init(":memory:")
+_conn = init(":memory:")
 
 
 def save_data(

nancy/__main__.py

@@ -0,0 +1,4 @@
+if __name__ == "__main__":
+    from . import cli
+
+    cli.main()

nancy/cli/__init__.py

@@ -0,0 +1,28 @@
+import click
+
+from ..version import __version__
+
+from .freeze import freeze, thaw
+
+
+# from https://click.palletsprojects.com/en/5.x/advanced/
+class AliasedGroup(click.Group):
+    def get_command(self, ctx, cmd_name):
+        rv = click.Group.get_command(self, ctx, cmd_name)
+        if rv is not None:
+            return rv
+        matches = [x for x in self.list_commands(ctx) if x.startswith(cmd_name)]
+        if not matches:
+            return None
+        elif len(matches) == 1:
+            return click.Group.get_command(self, ctx, matches[0])
+        ctx.fail("Too many matches: %s" % ", ".join(sorted(matches)))
+
+
+@click.group(f"nancy v{__version__}", cls=AliasedGroup)
+def main():
+    pass
+
+
+main.add_command(freeze)
+main.add_command(thaw)

nancy/cli/freeze.py

@@ -0,0 +1,13 @@
+import click
+
+
+@click.command()
+@click.argument("directory")
+def freeze(directory):
+    pass
+
+
+@click.command()
+@click.argument("files", nargs=-1)  # , help="Files or directories to thaw.")
+def thaw(files):
+    pass

nancy/version.py

@@ -0,0 +1 @@
+__version__ = "0.0.1pre"