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Fix non lowercase distinfo_name on Windows #12

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Fix non lowercase distinfo_name on Windows #12

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24 changes: 24 additions & 0 deletions src/buildout/wheel/__init__.py
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Original file line number Diff line number Diff line change
Expand Up @@ -38,6 +38,7 @@ class WheelInstaller(object):
wheel = None

def __init__(self, location):
location = self._fix_location_case(location)
# use pip's notion of supported tags, not wheel's:
context = pip.pep425tags.get_supported
try:
Expand Down Expand Up @@ -84,6 +85,28 @@ def _plant_namespace_declarations(dist):
if not os.path.exists(__init__filename):
shutil.copyfile(NAMESPACE_STUB_PATH, __init__filename)

@staticmethod
def _fix_location_case(location):
# Fix up the case of the filename that is used by
# wheel.install.WheelFile to determine the name of the dist-info
# directory in the zipfile, which is case sensitive.
dir_path = os.path.normpath(os.path.dirname(location))
basename = os.path.basename(location)

# On case sensitive systems, there may be more than one potential match
candidates = [
f for f in os.listdir(dir_path)
if os.path.isfile(os.path.join(dir_path, f))
and f.lower() == basename.lower()
]
exact_match = [f for f in candidates if f == basename]
if exact_match:
return os.path.join(dir_path, exact_match[0])
# No exact match means we must have had our path modified, use first
# candidate (should be only one as this must be a case sensitive file
# system)
return os.path.join(dir_path, candidates[0])

def distribution_info(self):
"""
Parsed info from the wheel name, with a setuptools compatible platform
Expand All @@ -107,6 +130,7 @@ def distribution_info(self):
def distribution(self, location, metadata=None):
""" Get DistInfoDistribution for wheel """
info = self.distribution_info()
location = self._fix_location_case(location)
return pkg_resources.DistInfoDistribution(
location=location,
metadata=metadata,
Expand Down