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Fix broken installation on Windows in virtualenv #4149

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Merged
merged 1 commit into from
Oct 25, 2017
Merged

Fix broken installation on Windows in virtualenv #4149

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8 changes: 7 additions & 1 deletion mypy/build.py
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Original file line number Diff line number Diff line change
Expand Up @@ -13,6 +13,7 @@
import binascii
import collections
import contextlib
from distutils.sysconfig import get_python_lib
import gc
import hashlib
import json
Expand Down Expand Up @@ -229,7 +230,12 @@ def default_data_dir(bin_dir: Optional[str]) -> str:
"""
if not bin_dir:
if os.name == 'nt':
prefixes = [os.path.join(sys.prefix, 'Lib'), os.path.join(site.getuserbase(), 'lib')]
prefixes = [os.path.join(sys.prefix, 'Lib')]
try:
prefixes.append(os.path.join(site.getuserbase(), 'lib'))
except AttributeError:
# getuserbase in not available in virtualenvs
prefixes.append(os.path.join(get_python_lib(), 'lib'))
for parent in prefixes:
data_dir = os.path.join(parent, 'mypy')
if os.path.exists(data_dir):
Expand Down