Summary:
Change `root` to normalize the repo path so it strips `\\?\` UNC prefix that
might break some (ex. Python) scripts.
Reviewed By: DurhamG
Differential Revision: D16928880
fbshipit-source-id: 9691b712f1ba0a07815d025e083d0cbd90b7d6a3
Any native code (C/C++/Rust) that Mercurial (either core or extensions)
depends on should go here. Python code, or native code that depends on
Python code (e.g. #include <Python.h> or use cpython) is disallowed.
As we start to convert more of Mercurial into Rust, and write new paths
entrirely in native code, we'll want to limit our dependency on Python, which is
why this barrier exists.
See also hgext/extlib/README.md, mercurial/cext/README.mb.
How do I choose between lib and extlib (and cext)?
If your code is native and doesn't depend on Python (awesome!), it goes here.
Otherwise, put it in hgext/extlib (if it's only used by extensions) or
mercurial/cext (if it's used by extensions or core).
775ee9c0c9