use import hooks to patch distutils/setuptools #1688
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Signed-off-by: Bernat Gabor <[email protected]>
Signed-off-by: Bernat Gabor <[email protected]>
Signed-off-by: Bernat Gabor <[email protected]>
This was referenced Mar 4, 2020
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Gevent-based applications need to be able to import threading, socket, ssl, etc... modules early to be able to monkey-patch them to use lightweight greenlets instead of OS threads. This patching has to be done as early as possible in the lifetime of the process http://www.gevent.org/intro.html#monkey-patching However starting from caae48b (use import hooks to patch distutils/setuptools (pypa#1688)) threading became always preimported which, for example, rendered gpython[1] unusable: (py38.virtualenv) kirr@deco:~/tmp/trashme$ gpython Traceback (most recent call last): File "/home/kirr/tmp/trashme/py38.virtualenv/bin/gpython", line 8, in <module> sys.exit(main()) File "/home/kirr/tmp/trashme/py38.virtualenv/lib/python3.8/site-packages/gpython/__init__.py", line 151, in main raise RuntimeError('gpython: internal error: the following modules are pre-imported, but must be not:' RuntimeError: gpython: internal error: the following modules are pre-imported, but must be not: ['threading'] sys.modules: ['__future__', '__main__', '_abc', '_bootlocale', '_codecs', '_collections', '_collections_abc', '_frozen_importlib', '_frozen_importlib_external', '_functools', '_heapq', '_imp', '_io', '_locale', '_operator', '_signal', '_sitebuiltins', '_sre', '_stat', '_thread', '_virtualenv', '_warnings', '_weakref', '_weakrefset', 'abc', 'builtins', 'codecs', 'collections', 'contextlib', 'copyreg', 'encodings', 'encodings.aliases', 'encodings.latin_1', 'encodings.utf_8', 'enum', 'functools', 'genericpath', 'gpython', 'heapq', 'importlib', 'importlib._bootstrap', 'importlib._bootstrap_external', 'importlib.abc', 'importlib.machinery', 'importlib.util', 'io', 'itertools', 'keyword', 'marshal', 'operator', 'os', 'os.path', 'posix', 'posixpath', 're', 'reprlib', 'site', 'sitecustomize', 'sre_compile', 'sre_constants', 'sre_parse', 'stat', 'sys', 'threading', 'time', 'types', 'warnings', 'zipimport', 'zope'] Fix it by importing threading lazily. Fixes: pypa#1895 [1] https://pypi.org/project/pygolang/#gpython
navytux
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Jul 14, 2020
Gevent-based applications need to be able to import threading, socket, ssl, etc... modules early to be able to monkey-patch them to use lightweight greenlets instead of OS threads. This patching has to be done as early as possible in the lifetime of the process http://www.gevent.org/intro.html#monkey-patching However starting from caae48b (use import hooks to patch distutils/setuptools (pypa#1688)) threading became always preimported which, for example, rendered gpython[1] unusable: (py38.virtualenv) kirr@deco:~/tmp/trashme$ gpython Traceback (most recent call last): File "/home/kirr/tmp/trashme/py38.virtualenv/bin/gpython", line 8, in <module> sys.exit(main()) File "/home/kirr/tmp/trashme/py38.virtualenv/lib/python3.8/site-packages/gpython/__init__.py", line 151, in main raise RuntimeError('gpython: internal error: the following modules are pre-imported, but must be not:' RuntimeError: gpython: internal error: the following modules are pre-imported, but must be not: ['threading'] sys.modules: ['__future__', '__main__', '_abc', '_bootlocale', '_codecs', '_collections', '_collections_abc', '_frozen_importlib', '_frozen_importlib_external', '_functools', '_heapq', '_imp', '_io', '_locale', '_operator', '_signal', '_sitebuiltins', '_sre', '_stat', '_thread', '_virtualenv', '_warnings', '_weakref', '_weakrefset', 'abc', 'builtins', 'codecs', 'collections', 'contextlib', 'copyreg', 'encodings', 'encodings.aliases', 'encodings.latin_1', 'encodings.utf_8', 'enum', 'functools', 'genericpath', 'gpython', 'heapq', 'importlib', 'importlib._bootstrap', 'importlib._bootstrap_external', 'importlib.abc', 'importlib.machinery', 'importlib.util', 'io', 'itertools', 'keyword', 'marshal', 'operator', 'os', 'os.path', 'posix', 'posixpath', 're', 'reprlib', 'site', 'sitecustomize', 'sre_compile', 'sre_constants', 'sre_parse', 'stat', 'sys', 'threading', 'time', 'types', 'warnings', 'zipimport', 'zope'] Fix it by importing threading lazily. Fixes: pypa#1895 [1] https://pypi.org/project/pygolang/#gpython
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Resolves #1684
Resolves #1685
Resolves #1663
Resolves #1682