> On Feb 11, 2021, at 1:04 PM, Glyph <gl...@twistedmatrix.com> wrote: > > >> On Feb 11, 2021, at 11:41 AM, Wilfredo Sánchez Vega <wsanc...@wsanchez.net >> <mailto:wsanc...@wsanchez.net>> wrote: >> >>> My concern here is that Twisted may have added a dependency on requests, >>> and that dependency means that if you want IDNA==3.1, as Klein’s tox.ini >>> does, that you aren’t allowed to. That seems weak; I’d say a bug. No? >> >> Note this is only cause when installing treq, so the issue seems to be >> there, though for some reason, it’s only a problem with Twisted trunk, which >> kind of confuses me, but I haven’t dug into it beyond trying to figure out a >> bit about what fails to install. >> >> So I agree probably it’s not a blocker for Twisted, and it’s only annoying >> to Klein for its own testing, not it’s clients, but if I were a client of >> treq (and Klein is), I’d think this is a bug. > > Attempting to reproduce this locally was a real adventure for me. I had a > bunch of failure-to-terminate cases from the new pip resolver, until I gave > up, download the newest security update of each release of python, upgraded > pip, tox, setuptools, and virtualenv for every python version, fully cleaned > my git checkout, and re-ran. > > Now everything passes except for coverage-py39-twtrunk, which still fails to > terminate. > > Under -vvvv, it spends a very long time printing messages like these over and > over again: > > INFO: pip is looking at multiple versions of setuptools to determine which > version is compatible with other requirements. This could take a while. > INFO: This is taking longer than usual. You might need to provide the > dependency resolver with stricter constraints to reduce runtime. If you want > to abort this run, you can press Ctrl + C to do so. To improve how pip > performs, tell us what happened here: > https://pip.pypa.io/surveys/backtracking > <https://pip.pypa.io/surveys/backtracking> > > as it installs every version of setuptools and six that has ever existed. > > It seems like Klein has backed itself into a very weird and complex corner > with the new dependency resolver, but it doesn't appear unique to Twisted > trunk, just perhaps tickled ever so slightly worse.
I've now been running `tox -vvvv -r -e coverage-py39-twtrunk` for well over an hour, so I think we may have some pip resolver bugs to report. -g
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