RFC: new demandimport implementation for Python 3

[Gregory Szorc]

On Mon, Jul 18, 2016 at 11:25 AM, Siddharth Agarwal <sid at less-broken.com>
wrote:

> On 7/17/16 10:41, Gregory Szorc wrote:
>
>>
>> Is there a reason this custom loader isn't implemented in terms of
>> importlib.util.LazyLoader? Is the built-in lazy loader not at all suitable
>> for our use, requiring an independent implementation?
>>
>
> Following up here, with Python 3.5.2+ we can now use the builtin
> LazyLoader. Here's what it looks like:
> https://bpaste.net/show/91c7a00768ce
>

This looks much more digestible! Thanks.

Have you tried this code with the new source transforming module loader
that landed last week? IIRC, the loader protocol uses the first
loader/finder it sees. If the demandimport loader/finder is bypassing
source transformation, that would be bad, obviously.
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