[issue43976] Introduce mechanism to allow Python distributors to add custom site install schemes

[Steve Dower]

Steve Dower <steve.dower at python.org> added the comment:

Any reason this couldn't be in sitecustomize.py? Either by poking values into sysconfig directly (for back-compat) or we train sysconfig to look inside sitecustomize for a well-known name.

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nosy: +steve.dower

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue43976>
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