Issue #15822: Fix installation of lib2to3 grammar pickles to ensure
they are created in the install locations and with the proper timestamp.
(Solution suggested by MvL)
diff --git a/Lib/lib2to3/pgen2/driver.py b/Lib/lib2to3/pgen2/driver.py
index e7828ff..4c611c6 100644
--- a/Lib/lib2to3/pgen2/driver.py
+++ b/Lib/lib2to3/pgen2/driver.py
@@ -138,3 +138,20 @@
if not os.path.exists(b):
return True
return os.path.getmtime(a) >= os.path.getmtime(b)
+
+
+def main(*args):
+ """Main program, when run as a script: produce grammar pickle files.
+
+ Calls load_grammar for each argument, a path to a grammar text file.
+ """
+ if not args:
+ args = sys.argv[1:]
+ logging.basicConfig(level=logging.INFO, stream=sys.stdout,
+ format='%(message)s')
+ for gt in args:
+ load_grammar(gt, save=True, force=True)
+ return True
+
+if __name__ == "__main__":
+ sys.exit(int(not main()))