Fix broken link in user guide

[wimglenn]

Note: I actually don't know what pylauncher is, so if Vinay's project is not the right one then apologies
The setuptools docs also have the same broken link here https://setuptools.readthedocs.io/en/latest/easy_install.html#natural-script-launcher

[webknjaz]

@wimglenn I think it's already in the stdlib. And the Python Docs website is integrated into this project via intersphinx.
So I guess you should just drop this line and use :ref:`python:launcher` as a reference right in the table instead.

@vsajip ^

[pfmoore]

pylauncher is a different project than the launcher that's in the core python distribution.

[vsajip]

To be clear, pylauncher was the reference implementation for PEP-397 and that implementation was moved to become part of the Python distribution, with minor changes. Since the launcher now ships with Python, the pylauncher repository is really only of historical interest / perhaps worth looking at if there are regressions in the in-Python launcher. I do occasionally look at how much the in-Python version has diverged from pylauncher and have sometimes synced up changes, but it's not a priority or anything.

[wimglenn]

The topic of this particular page, "pip vs easy install", may also be primarily historical interest - so perhaps the reference implementation is actually the best place for the link target after all?

[pfmoore]

Reading the page, I think it's all obsolete. I don't even know what "pylauncher support" means in this context. Certainly not as something pip doesn't have...

[pradyunsg]

Looks like this pages needs updating! :)

[pradyunsg]

Let's merge this in, as it's fixing a broken link, and we'll come back to the rest of this page afterwards. :)