BLD: clean-up sdist creation

MANIFEST.in

@@ -15,6 +15,7 @@ graft pandas
 global-exclude *.bz2
 global-exclude *.csv
 global-exclude *.dta
+global-exclude *.feather
 global-exclude *.gz
 global-exclude *.h5
 global-exclude *.html
@@ -24,7 +25,10 @@ global-exclude *.pickle
 global-exclude *.png
 global-exclude *.pyc
 global-exclude *.pyd
+global-exclude *.ods
+global-exclude *.odt
 global-exclude *.sas7bdat
+global-exclude *.sav
 global-exclude *.so
 global-exclude *.xls
 global-exclude *.xlsm

doc/source/whatsnew/v1.0.0.rst

@@ -37,6 +37,15 @@ Other enhancements
   (:issue:`28368`)
 -
 
+
+Build Changes
+^^^^^^^^^^^^^
+
+Pandas has added a `pyproject.toml <https://www.python.org/dev/peps/pep-0517/>`_ file and will no longer include
+cythonized files in the source distribution uploaded to PyPI (:issue:`28341`, :issue:`20775`). If you're installing
+a built distribution (wheel) or via conda, this shouldn't have any effect on you. If you're building pandas from
+source, you should no longer need to install Cython into your build environment before calling ``pip install pandas``.
+
 .. _whatsnew_1000.api_breaking:
 
 Backwards incompatible API changes
@@ -226,13 +235,6 @@ Sparse
 -
 -
 
-
-Build Changes
-^^^^^^^^^^^^^
-- Fixed pyqt development dependency issue because of different pyqt package name in conda and PyPI (:issue:`26838`)
-- Added a `pyproject.toml <https://www.python.org/dev/peps/pep-0517/>`_ file (:issue:`20775`)
-
-
 ExtensionArray
 ^^^^^^^^^^^^^^
 

setup.py

@@ -522,14 +522,14 @@ def run(self):
 # re-compile.
 def maybe_cythonize(extensions, *args, **kwargs):
     """
-    Render tempita templates before calling cythonize
+    Render tempita templates before calling cythonize. This is skipped for
+
+    * clean
+    * sdist
     """
-    if len(sys.argv) > 1 and "clean" in sys.argv:
-        # Avoid running cythonize on `python setup.py clean`
+    if "clean" in sys.argv or "sdist" in sys.argv:
         # See https://github.com/cython/cython/issues/1495
         return extensions
-    elif "sdist" in sys.argv:
-        return extensions
 
     numpy_incl = pkg_resources.resource_filename("numpy", "core/include")
     # TODO: Is this really necessary here?