Fix pip install for new typeshed (#9976)

This is a follow up for #9973

Co-authored-by: Ivan Levkivskyi <[email protected]>

Author: ilevkivskyi

MANIFEST.in

@@ -3,6 +3,7 @@
 
 # stubs
 prune mypy/typeshed
+include mypy/typeshed/stdlib/VERSIONS
 recursive-include mypy/typeshed *.pyi
 
 # mypy and mypyc

mypy-requirements.txt

@@ -3,3 +3,4 @@ mypy_extensions>=0.4.3,<0.5.0
 typed_ast>=1.4.0,<1.5.0
 types-typing-extensions>=3.7.0
 types-mypy-extensions>=0.4.0
+toml

setup.py

@@ -73,6 +73,7 @@ def run(self):
 package_data = ['py.typed']
 
 package_data += find_package_data(os.path.join('mypy', 'typeshed'), ['*.py', '*.pyi'])
+package_data += [os.path.join('mypy', 'typeshed', 'stdlib', 'VERSIONS')]
 
 package_data += find_package_data(os.path.join('mypy', 'xml'), ['*.xsd', '*.xslt', '*.css'])
 
@@ -195,6 +196,7 @@ def run(self):
                         'mypy_extensions >= 0.4.3, < 0.5.0',
                         'types-typing-extensions>=3.7.0',
                         'types-mypy-extensions>=0.4.0',
+                        'toml',
                         ],
       # Same here.
       extras_require={'dmypy': 'psutil >= 4.0'},