bug#62694: 30.0.50; eglot-tests fails with recent pylsp

[Basil Contovounesios via "Bug reports for GNU Emacs, the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>]

João Távora [2023-04-09 13:41 +0100] wrote:

> On Sun, Apr 9, 2023, 12:22 Basil Contovounesios <contovob@tcd.ie> wrote:
>
>  João Távora [2023-04-06 13:49 +0100] wrote:
>
>  > On Thu, Apr 6, 2023, 12:22 Michael Albinus <michael.albinus@gmx.de> wrote:
>  >
>  >> > Instead of using your distribution package manager, I recommend
>  >> > installing pylsp via the official Python package manager, pip, and
>  >> > doing it like so:
>  >> >
>  >> > pip install "python-lsp-server[all]"
>
>  IME this may not be sufficient to get the latest version of pylsp's
>  dependencies, such as autopep8, which I presume is the component
>  responsible for the differences in formatting across development
>  environments.
>
>  IOW it may be necessary to explicitly 'pip install -U autopep8'.
>
> If that were true, GitHub CI would be failing, since it used this
> command, and it's not.

The CI probably installs anew each time it runs, whereas I was hinting
(sorry for not making it clearer) at the case where a local user updates
pip packages over time.

>  >> I disagree. Running regression tests towards bleeding edge development
>  >> version of pylsp is not the intention. You cannot expect, that everybody
>  >> running Emacs tests has installed pylsp like this. But she could have
>  >> installed the Debian pylsp package.
>  >
>  > Sure, or she has a 'pylsp' that prints the complete works of
>  > Shakespeare. But these tests are designed for the number one
>  > recommended pylsp installation method. It's AFAIK not the
>  > "bleeding edge" (which would be a Git installation). And tests
>  > have been running fine with that installation method for a
>  > number of months now, maybe even years.
>
>  FWIW the autopep failure in bug#61637 was with latest pip-installed
>  pylsp and autopep8, and the patch in that report worked around it by
>  accepting one of a number of possible formattings.
>
>  A version check for autopep8 (rather than pylsp) may have been an
>  alternative solution
>
> Who knows? Did you try it?

I only tried the aforementioned patch at the time.

I was just clarifying for posterity that the issue may well have lain
with a component of pylsp rather than the version of the server itself,
which is what this discussion focused on.

> If it works i would have been happy to accept it Noone proposed
> it. Instead, some truly vague and complex vapourware things were
> proposed.

That earlier proposals were not complete, optimal, or up to yours or
anyone's standards does not warrant degrading them, IMO.  Like you,
we're all here just trying to improve Emacs in whatever way we can.

Thanks,

-- 
Basil