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diff --git a/pip/_vendor/pep517/in_process/__init__.py b/pip/_vendor/pep517/in_process/__init__.py
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index c932313..a01143b 100644
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--- a/pip/_vendor/pep517/in_process/__init__.py
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+++ b/pip/_vendor/pep517/in_process/__init__.py
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@@ -10,8 +10,13 @@ try:
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import importlib.resources as resources
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def _in_proc_script_path():
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- return resources.path(__package__, '_in_process.py')
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+ if resources.is_resource(__package__, '_in_process.py'):
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+ return resources.path(__package__, '_in_process.py')
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+ return resources.path(__package__, '_in_process.pyc')
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except ImportError:
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@contextmanager
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def _in_proc_script_path():
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- yield pjoin(dirname(abspath(__file__)), '_in_process.py')
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+ _in_proc_script = pjoin(dirname(abspath(__file__)), '_in_process.py')
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+ if not os.path.isfile(_in_proc_script):
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+ _in_proc_script = pjoin(dirname(abspath(__file__)), '_in_process.pyc')
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+ yield _in_proc_script
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