Specify long_description_content_type so that PyPI accepts wheels (#7035)

Fixes #7028

Author: pavoljuhas

cirq-aqt/setup.py

@@ -71,6 +71,7 @@
     license='Apache 2',
     description=description,
     long_description=long_description,
+    long_description_content_type='text/markdown',
     packages=cirq_packages,
     package_data={'cirq_aqt': ['py.typed'], 'cirq_aqt.json_test_data': ['*']},
     classifiers=[

cirq-core/setup.py

@@ -75,6 +75,7 @@
     license='Apache 2',
     description=description,
     long_description=long_description,
+    long_description_content_type='text/markdown',
     packages=cirq_packages,
     package_data={'cirq': ['py.typed'], 'cirq.protocols.json_test_data': ['*']},
     classifiers=[

cirq-google/setup.py

@@ -73,6 +73,7 @@
     license='Apache 2',
     description=description,
     long_description=long_description,
+    long_description_content_type='text/markdown',
     packages=packs,
     package_data={
         'cirq_google': ['py.typed'],

cirq-ionq/setup.py

@@ -70,6 +70,7 @@
     license='Apache 2',
     description=description,
     long_description=long_description,
+    long_description_content_type='text/markdown',
     packages=cirq_packages,
     package_data={'cirq_ionq': ['py.typed'], 'cirq_ionq.json_test_data': ['*']},
     classifiers=[

cirq-pasqal/setup.py

@@ -69,6 +69,7 @@
     license='Apache 2',
     description=description,
     long_description=long_description,
+    long_description_content_type='text/markdown',
     packages=cirq_packages,
     package_data={'cirq_pasqal': ['py.typed'], 'cirq_pasqal.json_test_data': ['*']},
     classifiers=[

cirq-rigetti/setup.py

@@ -71,6 +71,7 @@
     license='Apache 2',
     description=description,
     long_description=long_description,
+    long_description_content_type='text/markdown',
     packages=cirq_packages,
     package_data={'cirq_rigetti': ['py.typed'], 'cirq_rigetti.json_test_data': ['*']},
     classifiers=[

cirq-web/setup.py

@@ -73,6 +73,7 @@
     license='Apache 2',
     description=description,
     long_description=long_description,
+    long_description_content_type='text/markdown',
     packages=packs,
     package_data={'cirq_web': ['dist/*'], 'cirq_ts': ['dist/*.bundle.js']},
     classifiers=[