Skip to content

Fail with an explicit error on PyPy #20384

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
ilevkivskyi merged 4 commits into from
Dec 9, 2025
Merged

Fail with an explicit error on PyPy #20384

Show file tree
Hide file tree
Changes from 1 commit
Commits
Show all changes
4 commits
Select commit Hold shift + click to select a range
943d04a
Fail with an explicit error on PyPy
ilevkivskyi Dec 9, 2025
17677fc
Print error conditionally
ilevkivskyi Dec 9, 2025
3bf9c9d
Fail in setup.py instead
ilevkivskyi Dec 9, 2025
32b0cff
Use stderr for consistency
ilevkivskyi Dec 9, 2025
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
Prev Previous commit
Next Next commit
Fail in setup.py instead
  • Loading branch information
@ilevkivskyi
ilevkivskyi committed Dec 9, 2025
commit 3bf9c9ded4778abb5a7d548898b8dca6087fd40d
13 changes: 1 addition & 12 deletions mypy/build.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -40,18 +40,7 @@
TypedDict,
)

try:
from librt.internal import cache_version
except ImportError:
if platform.python_implementation() == "PyPy":
print(
"Running mypy on PyPy is not supported yet."
"To type-check a PyPy library please run mypy on an equivalent CPython version,"
"see https://github.com/mypyc/librt/issues/16 for possible workarounds."
)
sys.exit(2)
else:
raise
from librt.internal import cache_version

import mypy.semanal_main
from mypy.cache import CACHE_VERSION, CacheMeta, ReadBuffer, WriteBuffer, write_json
Expand Down
9 changes: 9 additions & 0 deletions setup.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -5,13 +5,22 @@
import glob
import os
import os.path
import platform
import sys
from typing import TYPE_CHECKING, Any

if sys.version_info < (3, 10, 0): # noqa: UP036, RUF100
sys.stderr.write("ERROR: You need Python 3.10 or later to use mypy.\n")
exit(1)

if platform.python_implementation() == "PyPy":
print(
"ERROR: Running mypy on PyPy is not supported yet."
"To type-check a PyPy library please use an equivalent CPython version,"
"see https://github.com/mypyc/librt/issues/16 for possible workarounds."
)
sys.exit(1)

# we'll import stuff from the source tree, let's ensure is on the sys path
sys.path.insert(0, os.path.dirname(os.path.realpath(__file__)))

Expand Down