[issue14657] Avoid two importlib copies

[Marc-Andre Lemburg]

Marc-Andre Lemburg <mal at egenix.com> added the comment:

Brett Cannon wrote:
> 
> Brett Cannon <brett at python.org> added the comment:
> 
> So basically if you are running in a checkout, grab the source file and compile it manually since its location is essentially hard-coded and thus you don't need to care about sys.path and all the other stuff required to do an import, while using the frozen code for when you are running an installed module since you would otherwise need to do the search for importlib's source file to do a load at startup properly.

Right.

> That's an interesting idea. How do we currently tell that the interpreter is running in a checkout? Is that exposed in any way to Python code?

There's some magic happening in site.py for checkouts, but I'm not sure
whether any of that is persistent or even available at the time these
particular imports would happen.

Then again, I'm not sure you need to know whether you have a checkout
or not. You just need some flag to identify whether you want the
search for external module code to take place or not. sys.flags
could be used for that.

----------

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue14657>
_______________________________________