Suggest additional types-* packages from typeshed

[JukkaL]

Now we have suggestions for almost all the currently available third-party packages in typeshed that don't have a release that includes PEP 561 type information. sqlalchemy is not included, since it has a few alternatives (some outside typeshed), and I don't know which we should suggest.

These stubs were never bundled with mypy, so --ignore-missing-imports works with these, unlike the existing packages for which we have suggestions.

Here's an example mypy output:

t.py:1: error: Library stubs not installed for "tree_sitter"
t.py:1: note: Hint: "python3 -m pip install types-tree-sitter"
t.py:1: note: (or run "mypy --install-types" to install all missing stub packages)
t.py:1: note: See https://mypy.readthedocs.io/en/stable/running_mypy.html#missing-imports

I manually tested that --install-types works for these.

[github-actions]

Diff from mypy_primer, showing the effect of this PR on open source code:

rclip (https://github.com/yurijmikhalevich/rclip)
- rclip/model.py:6: error: Cannot find implementation or library stub for module named "PIL"
+ rclip/model.py:6: error: Library stubs not installed for "PIL"
- rclip/utils.py:4: error: Cannot find implementation or library stub for module named "PIL"
+ rclip/utils.py:4: error: Library stubs not installed for "PIL"
- rclip/utils.py:6: note: (or run "mypy --install-types" to install all missing stub packages)
- rclip/main.py:8: error: Cannot find implementation or library stub for module named "tqdm"
- rclip/main.py:9: error: Cannot find implementation or library stub for module named "PIL"
+ rclip/main.py:8: error: Library stubs not installed for "tqdm"
+ rclip/main.py:8: note: Hint: "python3 -m pip install types-tqdm"
+ rclip/main.py:8: note: (or run "mypy --install-types" to install all missing stub packages)
+ rclip/main.py:9: error: Library stubs not installed for "PIL"
+ rclip/main.py:9: note: Hint: "python3 -m pip install types-Pillow"

apprise (https://github.com/caronc/apprise)
- setup.py:40: error: Cannot find implementation or library stub for module named "babel.messages"
+ setup.py:40: error: Library stubs not installed for "babel.messages"
+ setup.py:40: note: Hint: "python3 -m pip install types-babel"
+ setup.py:40: note: (or run "mypy --install-types" to install all missing stub packages)

porcupine (https://github.com/Akuli/porcupine)
- porcupine/plugins/run/windows_run.py:10: error: Cannot find implementation or library stub for module named "colorama"  [import]
+ porcupine/plugins/run/windows_run.py:10: error: Library stubs not installed for "colorama"  [import]
+ porcupine/plugins/run/windows_run.py:10: note: Hint: "python3 -m pip install types-colorama"
- porcupine/__init__.py:12: error: Cannot find implementation or library stub for module named "appdirs"  [import]
+ porcupine/__init__.py:12: error: Library stubs not installed for "appdirs"  [import]
+ porcupine/__init__.py:12: note: Hint: "python3 -m pip install types-appdirs"
+ porcupine/__init__.py:12: note: (or run "mypy --install-types" to install all missing stub packages)
- porcupine/settings.py:20: error: Cannot find implementation or library stub for module named "pygments"  [import]
+ porcupine/settings.py:20: error: Library stubs not installed for "pygments"  [import]
- porcupine/textutils.py:12: error: Cannot find implementation or library stub for module named "pygments"  [import]
- porcupine/tabs.py:17: error: Cannot find implementation or library stub for module named "pygments.lexer"  [import]
- porcupine/tabs.py:18: error: Cannot find implementation or library stub for module named "pygments.lexers"  [import]
- porcupine/plugins/longlinemarker.py:8: error: Cannot find implementation or library stub for module named "pygments"  [import]
+ porcupine/textutils.py:12: error: Library stubs not installed for "pygments"  [import]
+ porcupine/tabs.py:17: error: Library stubs not installed for "pygments.lexer"  [import]
+ porcupine/tabs.py:18: error: Library stubs not installed for "pygments.lexers"  [import]
+ porcupine/plugins/longlinemarker.py:8: error: Library stubs not installed for "pygments"  [import]
- porcupine/plugins/highlight/base_highlighter.py:7: error: Cannot find implementation or library stub for module named "pygments"  [import]
+ porcupine/plugins/highlight/base_highlighter.py:7: error: Library stubs not installed for "pygments"  [import]
- porcupine/pluginloader.py:18: error: Cannot find implementation or library stub for module named "toposort"  [import]
- porcupine/plugins/ttk_themes.py:8: error: Cannot find implementation or library stub for module named "ttkthemes"  [import]
- porcupine/plugins/pastebin.py:22: error: Cannot find implementation or library stub for module named "pygments.lexer"  [import]
+ porcupine/pluginloader.py:18: error: Library stubs not installed for "toposort"  [import]
+ porcupine/pluginloader.py:18: note: Hint: "python3 -m pip install types-toposort"
+ porcupine/plugins/ttk_themes.py:8: error: Library stubs not installed for "ttkthemes"  [import]
+ porcupine/plugins/ttk_themes.py:8: note: Hint: "python3 -m pip install types-ttkthemes"
+ porcupine/plugins/pastebin.py:22: error: Library stubs not installed for "pygments.lexer"  [import]
- porcupine/plugins/filetypes.py:14: error: Cannot find implementation or library stub for module named "pygments"  [import]
- porcupine/plugins/filetypes.py:15: error: Cannot find implementation or library stub for module named "pygments.util"  [import]
+ porcupine/plugins/filetypes.py:14: error: Library stubs not installed for "pygments"  [import]
+ porcupine/plugins/filetypes.py:15: error: Library stubs not installed for "pygments.util"  [import]
- porcupine/plugins/highlight/tree_sitter_highlighter.py:11: error: Cannot find implementation or library stub for module named "tree_sitter"  [import]
+ porcupine/plugins/highlight/tree_sitter_highlighter.py:11: error: Library stubs not installed for "tree_sitter"  [import]
+ porcupine/plugins/highlight/tree_sitter_highlighter.py:11: note: Hint: "python3 -m pip install types-tree-sitter"
- porcupine/plugins/highlight/tree_sitter_highlighter.py:12: error: Cannot find implementation or library stub for module named "tree_sitter_languages"  [import]
+ porcupine/plugins/highlight/tree_sitter_highlighter.py:12: error: Library stubs not installed for "tree_sitter_languages"  [import]
+ porcupine/plugins/highlight/tree_sitter_highlighter.py:12: note: Hint: "python3 -m pip install types-tree-sitter-languages"
- porcupine/plugins/highlight/tree_sitter_highlighter.py:13: note: (or run "mypy --install-types" to install all missing stub packages)
- porcupine/plugins/highlight/pygments_highlighter.py:7: error: Cannot find implementation or library stub for module named "pygments.lexer"  [import]
+ porcupine/plugins/highlight/pygments_highlighter.py:7: error: Library stubs not installed for "pygments.lexer"  [import]
- porcupine/plugins/highlight/pygments_highlighter.py:8: error: Cannot find implementation or library stub for module named "pygments.lexers"  [import]
+ porcupine/plugins/highlight/pygments_highlighter.py:8: error: Library stubs not installed for "pygments.lexers"  [import]
- porcupine/plugins/filemanager.py:16: error: Cannot find implementation or library stub for module named "send2trash"  [import]
+ porcupine/plugins/filemanager.py:16: error: Library stubs not installed for "send2trash"  [import]
+ porcupine/plugins/filemanager.py:16: note: Hint: "python3 -m pip install types-Send2Trash"
- porcupine/plugins/highlight/__init__.py:15: error: Cannot find implementation or library stub for module named "pygments.lexer"  [import]
+ porcupine/plugins/highlight/__init__.py:15: error: Library stubs not installed for "pygments.lexer"  [import]
+ porcupine/plugins/highlight/__init__.py:15: note: Hint: "python3 -m pip install types-Pygments"
- porcupine/plugins/run/no_terminal.py:18: error: Cannot find implementation or library stub for module named "psutil"  [import]
+ porcupine/plugins/run/no_terminal.py:18: error: Library stubs not installed for "psutil"  [import]
+ porcupine/plugins/run/no_terminal.py:18: note: Hint: "python3 -m pip install types-psutil"

jax (https://github.com/google/jax)
- jax/_src/debugger/colab_debugger.py:34: error: Cannot find implementation or library stub for module named "pygments"  [import]
+ jax/_src/debugger/colab_debugger.py:34: error: Library stubs not installed for "pygments"  [import]
+ jax/_src/debugger/colab_debugger.py:34: note: Hint: "python3 -m pip install types-Pygments"
+ jax/_src/debugger/colab_debugger.py:34: note: (or run "mypy --install-types" to install all missing stub packages)

prefect (https://github.com/PrefectHQ/prefect)
- src/prefect/orion/utilities/encryption.py:7: error: Cannot find implementation or library stub for module named "cryptography.fernet"
+ src/prefect/orion/utilities/encryption.py:7: error: Library stubs not installed for "cryptography.fernet"
+ src/prefect/orion/utilities/encryption.py:7: note: Hint: "python3 -m pip install types-cryptography"
+ src/prefect/orion/utilities/encryption.py:7: note: (or run "mypy --install-types" to install all missing stub packages)
- src/prefect/software/pip.py:12: note: (or run "mypy --install-types" to install all missing stub packages)
- src/prefect/testing/standard_test_suites/blocks.py:7: error: Cannot find implementation or library stub for module named "PIL"
+ src/prefect/testing/standard_test_suites/blocks.py:7: error: Library stubs not installed for "PIL"
+ src/prefect/testing/standard_test_suites/blocks.py:7: note: Hint: "python3 -m pip install types-Pillow"

artigraph (https://github.com/artigraph/artigraph)
- src/arti/fingerprints/__init__.py:8: error: Cannot find implementation or library stub for module named "farmhash"  [import]
+ src/arti/fingerprints/__init__.py:8: error: Library stubs not installed for "farmhash"  [import]
+ src/arti/fingerprints/__init__.py:8: note: Hint: "python3 -m pip install types-pyfarmhash"
+ src/arti/fingerprints/__init__.py:8: note: (or run "mypy --install-types" to install all missing stub packages)

streamlit (https://github.com/streamlit/streamlit)
- lib/tests/streamlit/elements/image_test.py:17:1: error: Cannot find implementation or library stub for module named "PIL.Image"  [import]
+ lib/tests/streamlit/elements/image_test.py:17:1: error: Library stubs not installed for "PIL.Image"  [import]
+ lib/tests/streamlit/elements/image_test.py:17:1: note: Hint: "python3 -m pip install types-Pillow"
+ lib/tests/streamlit/elements/image_test.py:17:1: note: (or run "mypy --install-types" to install all missing stub packages)

mypy (https://github.com/python/mypy)
- mypy/dmypy_server.py:947: error: Cannot find implementation or library stub for module named "psutil"  [import]
+ mypy/dmypy_server.py:947: error: Library stubs not installed for "psutil"  [import]
+ mypy/dmypy_server.py:947: note: Hint: "python3 -m pip install types-psutil"
+ mypy/dmypy_server.py:947: note: (or run "mypy --install-types" to install all missing stub packages)

zulip (https://github.com/zulip/zulip)
- tools/lib/capitalization.py:4: error: Cannot find implementation or library stub for module named "bs4"  [import]
+ tools/lib/capitalization.py:4: error: Library stubs not installed for "bs4"  [import]
- zerver/migrations/0244_message_copy_pub_date_to_date_sent.py:8: error: Cannot find implementation or library stub for module named "psycopg2.sql"  [import]
+ zerver/migrations/0244_message_copy_pub_date_to_date_sent.py:8: error: Library stubs not installed for "psycopg2.sql"  [import]
- zerver/migrations/0239_usermessage_copy_id_to_bigint_id.py:9: error: Cannot find implementation or library stub for module named "psycopg2.sql"  [import]
+ zerver/migrations/0239_usermessage_copy_id_to_bigint_id.py:9: error: Library stubs not installed for "psycopg2.sql"  [import]
- zerver/migrations/0102_convert_muted_topic.py:6: error: Cannot find implementation or library stub for module named "psycopg2.sql"  [import]
+ zerver/migrations/0102_convert_muted_topic.py:6: error: Library stubs not installed for "psycopg2.sql"  [import]
- zerver/lib/migrate.py:5: error: Cannot find implementation or library stub for module named "psycopg2.sql"  [import]
- zerver/lib/db.py:4: error: Cannot find implementation or library stub for module named "psycopg2.extensions"  [import]
- zerver/lib/db.py:5: error: Cannot find implementation or library stub for module named "psycopg2.sql"  [import]
+ zerver/lib/migrate.py:5: error: Library stubs not installed for "psycopg2.sql"  [import]
+ zerver/lib/db.py:4: error: Library stubs not installed for "psycopg2.extensions"  [import]
+ zerver/lib/db.py:4: note: Hint: "python3 -m pip install types-psycopg2"
+ zerver/lib/db.py:5: error: Library stubs not installed for "psycopg2.sql"  [import]
- zerver/lib/url_preview/parsers/base.py:12: error: Cannot find implementation or library stub for module named "bs4"  [import]
+ zerver/lib/url_preview/parsers/base.py:12: error: Library stubs not installed for "bs4"  [import]
+ zerver/lib/url_preview/parsers/base.py:12: note: Hint: "python3 -m pip install types-beautifulsoup4"
- tools/tests/test_capitalization_checker.py:3: error: Cannot find implementation or library stub for module named "bs4"  [import]
+ tools/tests/test_capitalization_checker.py:3: error: Library stubs not installed for "bs4"  [import]
- zerver/lib/url_preview/parsers/generic.py:4: error: Cannot find implementation or library stub for module named "bs4.element"  [import]
+ zerver/lib/url_preview/parsers/generic.py:4: error: Library stubs not installed for "bs4.element"  [import]
- zerver/lib/markdown/fenced_code.py:87: error: Cannot find implementation or library stub for module named "pygments.lexers"  [import]
- zerver/lib/markdown/fenced_code.py:88: error: Cannot find implementation or library stub for module named "pygments.util"  [import]
- zerver/openapi/openapi.py:14: error: Cannot find implementation or library stub for module named "jsonschema.exceptions"  [import]
+ zerver/lib/markdown/fenced_code.py:87: error: Library stubs not installed for "pygments.lexers"  [import]
+ zerver/lib/markdown/fenced_code.py:87: note: Hint: "python3 -m pip install types-Pygments"
+ zerver/lib/markdown/fenced_code.py:87: note: (or run "mypy --install-types" to install all missing stub packages)
+ zerver/lib/markdown/fenced_code.py:88: error: Library stubs not installed for "pygments.util"  [import]
+ zerver/openapi/openapi.py:14: error: Library stubs not installed for "jsonschema.exceptions"  [import]
+ zerver/openapi/openapi.py:14: note: Hint: "python3 -m pip install types-jsonschema"
- zerver/lib/html_to_text.py:3: error: Cannot find implementation or library stub for module named "bs4"  [import]
+ zerver/lib/html_to_text.py:3: error: Library stubs not installed for "bs4"  [import]
- zerver/lib/user_message.py:4: error: Cannot find implementation or library stub for module named "psycopg2.extras"  [import]
- zerver/lib/user_message.py:5: error: Cannot find implementation or library stub for module named "psycopg2.sql"  [import]
+ zerver/lib/user_message.py:4: error: Library stubs not installed for "psycopg2.extras"  [import]
+ zerver/lib/user_message.py:5: error: Library stubs not installed for "psycopg2.sql"  [import]
- analytics/lib/counts.py:10: error: Cannot find implementation or library stub for module named "psycopg2.sql"  [import]
+ analytics/lib/counts.py:10: error: Library stubs not installed for "psycopg2.sql"  [import]
- zerver/lib/upload.py:29: error: Cannot find implementation or library stub for module named "PIL"  [import]
- zerver/lib/upload.py:30: error: Cannot find implementation or library stub for module named "PIL.Image"  [import]
+ zerver/lib/upload.py:29: error: Library stubs not installed for "PIL"  [import]
+ zerver/lib/upload.py:30: error: Library stubs not installed for "PIL.Image"  [import]
+ zerver/lib/upload.py:30: note: Hint: "python3 -m pip install types-Pillow"
- corporate/lib/stripe.py:11: error: Cannot find implementation or library stub for module named "stripe"  [import]
+ corporate/lib/stripe.py:11: error: Library stubs not installed for "stripe"  [import]
+ corporate/lib/stripe.py:11: note: Hint: "python3 -m pip install types-stripe"
- zerver/lib/retention.py:38: error: Cannot find implementation or library stub for module named "psycopg2.sql"  [import]
+ zerver/lib/retention.py:38: error: Library stubs not installed for "psycopg2.sql"  [import]
- zerver/lib/subscription_info.py:9: error: Cannot find implementation or library stub for module named "psycopg2.sql"  [import]
- zerver/lib/message.py:27: error: Cannot find implementation or library stub for module named "psycopg2.sql"  [import]
- zerver/views/video_calls.py:22: error: Cannot find implementation or library stub for module named "oauthlib.oauth2"  [import]
+ zerver/lib/subscription_info.py:9: error: Library stubs not installed for "psycopg2.sql"  [import]
+ zerver/lib/message.py:27: error: Library stubs not installed for "psycopg2.sql"  [import]
+ zerver/views/video_calls.py:22: error: Library stubs not installed for "oauthlib.oauth2"  [import]
+ zerver/views/video_calls.py:22: note: Hint: "python3 -m pip install types-oauthlib"
- zerver/lib/email_notifications.py:14: error: Cannot find implementation or library stub for module named "bs4"  [import]
+ zerver/lib/email_notifications.py:14: error: Library stubs not installed for "bs4"  [import]
- zproject/backends.py:72: error: Cannot find implementation or library stub for module named "zxcvbn"  [import]
+ zproject/backends.py:72: error: Library stubs not installed for "zxcvbn"  [import]
+ zproject/backends.py:72: note: Hint: "python3 -m pip install types-zxcvbn"
- corporate/views/session.py:4: error: Cannot find implementation or library stub for module named "stripe"  [import]
+ corporate/views/session.py:4: error: Library stubs not installed for "stripe"  [import]
- corporate/tests/test_stripe.py:28: error: Cannot find implementation or library stub for module named "stripe"  [import]
- corporate/tests/test_stripe.py:29: error: Cannot find implementation or library stub for module named "stripe.util"  [import]
+ corporate/tests/test_stripe.py:28: error: Library stubs not installed for "stripe"  [import]
+ corporate/tests/test_stripe.py:29: error: Library stubs not installed for "stripe.util"  [import]
- corporate/lib/stripe_event_handler.py:4: error: Cannot find implementation or library stub for module named "stripe"  [import]
- analytics/tests/test_counts.py:10: error: Cannot find implementation or library stub for module named "psycopg2.sql"  [import]
+ corporate/lib/stripe_event_handler.py:4: error: Library stubs not installed for "stripe"  [import]
+ analytics/tests/test_counts.py:10: error: Library stubs not installed for "psycopg2.sql"  [import]
- tools/setup/generate_integration_bots_avatars.py:20: error: Cannot find implementation or library stub for module named "PIL"  [import]
+ tools/setup/generate_integration_bots_avatars.py:20: error: Library stubs not installed for "PIL"  [import]
- zerver/tests/test_upload.py:19: error: Cannot find implementation or library stub for module named "PIL"  [import]
+ zerver/tests/test_upload.py:19: error: Library stubs not installed for "PIL"  [import]
- zerver/tests/test_middleware.py:5: error: Cannot find implementation or library stub for module named "bs4"  [import]
+ zerver/tests/test_middleware.py:5: error: Library stubs not installed for "bs4"  [import]
- zerver/tests/test_auth_backends.py:35: error: Cannot find implementation or library stub for module named "bs4"  [import]
- zerver/tests/test_auth_backends.py:36: error: Cannot find implementation or library stub for module named "bs4.element"  [import]
+ zerver/tests/test_auth_backends.py:35: error: Library stubs not installed for "bs4"  [import]
+ zerver/tests/test_auth_backends.py:36: error: Library stubs not installed for "bs4.element"  [import]
- zerver/lib/import_realm.py:11: error: Cannot find implementation or library stub for module named "bs4"  [import]
- zerver/lib/import_realm.py:17: error: Cannot find implementation or library stub for module named "psycopg2.extras"  [import]
- zerver/lib/import_realm.py:18: error: Cannot find implementation or library stub for module named "psycopg2.sql"  [import]
- zerver/lib/fix_unreads.py:7: error: Cannot find implementation or library stub for module named "psycopg2.sql"  [import]
- corporate/views/webhook.py:4: error: Cannot find implementation or library stub for module named "stripe"  [import]
- corporate/views/billing_page.py:4: error: Cannot find implementation or library stub for module named "stripe"  [import]
- corporate/views/upgrade.py:5: error: Cannot find implementation or library stub for module named "stripe"  [import]
- tools/lib/provision_inner.py:12: error: Cannot find implementation or library stub for module named "pygments"  [import]
+ zerver/lib/import_realm.py:11: error: Library stubs not installed for "bs4"  [import]
+ zerver/lib/import_realm.py:17: error: Library stubs not installed for "psycopg2.extras"  [import]
+ zerver/lib/import_realm.py:18: error: Library stubs not installed for "psycopg2.sql"  [import]
+ zerver/lib/fix_unreads.py:7: error: Library stubs not installed for "psycopg2.sql"  [import]
+ corporate/views/webhook.py:4: error: Library stubs not installed for "stripe"  [import]
+ corporate/views/billing_page.py:4: error: Library stubs not installed for "stripe"  [import]
+ corporate/views/upgrade.py:5: error: Library stubs not installed for "stripe"  [import]
+ tools/lib/provision_inner.py:12: error: Library stubs not installed for "pygments"  [import]
- analytics/views/realm_activity.py:10: error: Cannot find implementation or library stub for module named "psycopg2.sql"  [import]
+ analytics/views/realm_activity.py:10: error: Library stubs not installed for "psycopg2.sql"  [import]
- analytics/views/installation_activity.py:14: error: Cannot find implementation or library stub for module named "psycopg2.sql"  [import]
+ analytics/views/installation_activity.py:14: error: Library stubs not installed for "psycopg2.sql"  [import]

flake8 (https://github.com/pycqa/flake8)
- src/flake8/plugins/pyflakes.py:11: error: Cannot find implementation or library stub for module named "pyflakes.checker"
- src/flake8/plugins/pyflakes.py:11: error: Cannot find implementation or library stub for module named "pyflakes"
- tests/unit/test_pyflakes_codes.py:6: error: Cannot find implementation or library stub for module named "pyflakes"
+ src/flake8/plugins/pyflakes.py:11: error: Library stubs not installed for "pyflakes.checker"
+ src/flake8/plugins/pyflakes.py:11: note: Hint: "python3 -m pip install types-pyflakes"
+ src/flake8/plugins/pyflakes.py:11: note: (or run "mypy --install-types" to install all missing stub packages)
+ src/flake8/plugins/pyflakes.py:11: error: Library stubs not installed for "pyflakes"
+ tests/unit/test_pyflakes_codes.py:6: error: Library stubs not installed for "pyflakes"

poetry (https://github.com/python-poetry/poetry)
- src/poetry/json/__init__.py:9: error: Cannot find implementation or library stub for module named "jsonschema"  [import]
+ src/poetry/json/__init__.py:9: error: Library stubs not installed for "jsonschema"  [import]
+ src/poetry/json/__init__.py:9: note: Hint: "python3 -m pip install types-jsonschema"
+ src/poetry/json/__init__.py:9: note: (or run "mypy --install-types" to install all missing stub packages)
- src/poetry/repositories/link_sources/html.py:22: error: Cannot find implementation or library stub for module named "html5lib"  [import]
+ src/poetry/repositories/link_sources/html.py:22: error: Library stubs not installed for "html5lib"  [import]
+ src/poetry/repositories/link_sources/html.py:22: note: Hint: "python3 -m pip install types-html5lib"
- src/poetry/repositories/pypi_repository.py:12: error: Cannot find implementation or library stub for module named "html5lib.html5parser"  [import]
+ src/poetry/repositories/pypi_repository.py:12: error: Library stubs not installed for "html5lib.html5parser"  [import]

bokeh (https://github.com/bokeh/bokeh)
- release/ui.py:27:1: error: Cannot find implementation or library stub for module named "colorama"  [import]
- src/bokeh/util/terminal.py:51:1: error: Cannot find implementation or library stub for module named "colorama"  [import]
+ release/ui.py:27:1: error: Library stubs not installed for "colorama"  [import]
+ src/bokeh/util/terminal.py:51:1: error: Library stubs not installed for "colorama"  [import]
+ src/bokeh/util/terminal.py:51:1: note: Hint: "python3 -m pip install types-colorama"
- src/bokeh/util/sampledata.py:105:1: note: (or run "mypy --install-types" to install all missing stub packages)
- src/bokeh/io/export.py:39:1: error: Cannot find implementation or library stub for module named "PIL"  [import]
+ src/bokeh/io/export.py:39:1: error: Library stubs not installed for "PIL"  [import]
+ src/bokeh/io/export.py:39:1: note: Hint: "python3 -m pip install types-Pillow"
+ src/bokeh/io/export.py:39:1: note: (or run "mypy --install-types" to install all missing stub packages)

[AlexWaygood]

I like the better error messages here!

Could we add a way of automatically updating the mappings in stubinfo.py when we do a typeshed sync? I don't like that we have to manually update the existing mapping every time typeshed removes a package. This seems like it might exacerbate that problem, since now we have to manually update stubinfo.py every time typeshed adds a package as well as every time it removes one. We could have a hardcoded excludelist (which would currently have only one entry, sqlalchemy) for packages which the typeshed-sync script shouldn't add to the mapping.

Maybe instead of having these two huge dictionaries in stubinfo.py, we could have a toml or json file somewhere to store this data? That might make it easier for the typeshed-sync script to auto-update the mappings.

Note that typeshed now has a bot that automatically files PRs to mark typeshed packages as obsolete if the upstream source now has inline types. So whether a stubs package is marked as obsolete or not in its METADATA.toml file should be pretty up-to-date information.

[hauntsaninja]

This looks great to me! Alex's suggestion can be done in a later PR (should be easy to just update stubinfo.py in place)

[AlexWaygood]

Btw @hauntsaninja does ^ that mypy_primer diff indicate some pip invocations need to be updated over at mypy_primer?

[hauntsaninja]

Notionally yes, but it's not the biggest deal. For typeshed CI everything is on MYPYPATH.

[AlexWaygood]

For typeshed CI everything is on MYPYPATH.

Oh of course — I forgot it worked differently in typeshed's CI :)