New submission from Gregory Szorc <gregory.sz...@gmail.com>:
On Windows, `sysconfig.get_path('include')` returns `Include` (capital I).
However, the actual installation path is `include` (lowercase i).
I believe the reason for the case mismatch is in this code in PC/layout/main.py:
```
if ns.include_dev:
for dest, src in rglob(ns.source / "Include", "**/*.h"):
yield "include/{}".format(dest), src
src = ns.source / "PC" / "pyconfig.h"
yield "include/pyconfig.h", src
```
The case mismatch is relevant for case sensitive filesystems. In my case, I was
extracting a Windows Python install on Linux and then using the `sysconfig`
value to locate directories within that install. Due to the case mismatch,
Linux says `Include` doesn't exist since `sysconfig` points to "include."
Case only renames can be a bit wonky to perform. I would suggest preserving
what is shipped today and changing `sysconfig` to advertise lowercase
"include." However, this would create a mismatch between the cpython source
repo and built distributions. So maybe attempting the case-only rename is
doable.
Note that Windows will not allow you to have a file/directory varying only in
case. i.e. you can have both an "include" and "Include." I can't recall if you
can perform a case-only rename with a single system call (meaning it is atomic)
or whether you need to go through a temporary directory.
----------
components: Windows
messages: 376131
nosy: indygreg, paul.moore, steve.dower, tim.golden, zach.ware
priority: normal
severity: normal
status: open
title: Case mismatch between "include" and "Include"
type: behavior
versions: Python 3.8
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue41669>
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