pantsbuild #pex

Hey all! I'm working on migrating a repository to pants and have run into some issues with pex I could use some help on. Namely, I'm trying to package a Django application. In Django, you need to run a configuration step before you can do anything else. I am doing this at the top of my entry_point script, but it appears that pex actually imports a ton of files before the entry_point, causing this initialization to not be complete. Does anyone here have experience packaging Django applications with pex?

enough-analyst-54434

04/01/2021, 2:42 AM

Pex 2.1.37 is released: + https://pypi.org/project/pex/2.1.37/ + https://github.com/pantsbuild/pex/releases/tag/v2.1.37 Posted in #releases

enough-analyst-54434

04/01/2021, 10:51 PM

Pex 2.1.38 is released: + https://pypi.org/project/pex/2.1.38/ + https://github.com/pantsbuild/pex/releases/tag/v2.1.38 Posted in #releases

happy-kitchen-89482

04/02/2021, 1:01 AM

This channel is archived to keep things streamlined. Please post to #general or #development instead!

happy-kitchen-89482

04/02/2021, 1:15 AM

archived the channel

happy-kitchen-89482

06/01/2023, 4:28 PM

un-archived the channel

fast-refrigerator-12613

06/07/2023, 10:20 AM

@fast-refrigerator-12613 has left the channel

enough-analyst-54434

06/15/2023, 4:00 PM

Just an FYI that I've been working on Python 3.12 support and that is green save for 10 unit tests here: https://github.com/jsirois/pex/tree/python/3.12

🔥 3

🐍 3

bitter-ability-32190

06/17/2023, 2:13 AM

I know Pex uses

pip

as part of locking, but does it use a new enough

pip

with support for PEP 658? https://discuss.python.org/t/pep-658-is-now-live-on-pypi/26693

bitter-ability-32190

06/19/2023, 7:25 PM

Does

pex3 lock create

respect

~/.config/pip/pip.conf

? I assume it does by nature of leveraging

pip

, but

pex3 lock create --no-pypi --no-build -r repository.txt -o repository.lock

is giving me:

Copy code

ERROR: Could not find a version that satisfies the requirement timeout-decorator==0.5.0 (from -r repository.txt (line 1)) (from versions: none)
ERROR: No matching distribution found for timeout-decorator==0.5.0 (from -r repository.txt (line 1))

bitter-ability-32190

06/20/2023, 6:59 PM

I think I found a bug in Pex, where if you have a wheel (built as a local dist in Pants) that has the same

top_level

as your source files, the pex_root

installed_wheels

for the local dist pex includes the source files of the "outer" pex. I'll work on a repro outside of Pants

bitter-ability-32190

06/29/2023, 3:17 PM

So @enough-analyst-54434 I'm looking at adding support to Pex to create a lockfile from an existing venv (or any way to produce a

pip inspect

JSON output) Do you see this as an extension of

pex3 lock create

or a new subcommand

pex3 lock pip-report

) I'm thinking in good UNIX style it should be something new and dedicated, that way it can be composed with the other commands if needed. And for what I can tell the Pex lockfile is just a subset of information in the report, so the code should be dead simple.

enough-analyst-54434

07/24/2023, 1:27 AM

Noting that Pex will not add

--pip-version 23.2.1

(https://pip.pypa.io/en/stable/news/#v23-2-1) which only contains a fix for the legacy resolver which Pex disallows use of for

Pip >= 23.2

bitter-ability-32190

07/29/2023, 10:06 PM

I can imagine PEX might have an opinion on https://discuss.python.org/t/pep-722-dependency-specification-for-single-file-scripts/29905

chilly-magazine-21545

08/01/2023, 4:15 PM

I'm about to hit merge on https://github.com/pantsbuild/pex/pull/2195 and https://github.com/pantsbuild/pex/pull/2193 because @enough-analyst-54434 signed off on both of them separately a week ago, but I'm pinging here because I haven't merged a pex change in a while and don't want to surprise anyone. no action necessary

chilly-magazine-21545

08/01/2023, 4:19 PM

merging 2195 induced a merge conflict on https://github.com/pantsbuild/pex/pull/2193 (as expected, since they modify the exact same code), so waiting for CI to go green because i'm in no rush

chilly-magazine-21545

08/01/2023, 4:30 PM

i still don't quite understand when to use github discussions vs issues, but i just made this proposal for a

pex3 cache

command into a discussion: https://github.com/pantsbuild/pex/discussions/2200 after seeing pip's new

pip cache

subcommand recently. would love any comments on how people currently manage the size of the pex cache

chilly-magazine-21545

08/06/2023, 5:45 PM

described a prototype using

pip install --report

JSON resolve report metadata, which would halve the time to create lockfiles when making use of some other in-flight pip changes: https://github.com/pantsbuild/pex/issues/2210. need to get more familiar with how pex selects the version of pip to execute

chilly-magazine-21545

08/06/2023, 6:36 PM

also, i'm terribly relieved that people have been working on scie so i don't have to write it myself. terribly necessary format and very impressed that so much has already been done

fresh-dentist-96982

09/30/2023, 3:58 PM

Hi Is there an easy to get the

pex.platform

for your local machine? Like some python code to output the platform string?

enough-analyst-54434

10/09/2023, 4:55 AM

As an FYI I'll be out of country and away from keyboard from October 10th through November 2nd. I'll be catching up with any questions or issues that have piled up starting November 3rd.

👍 4

lively-gpu-26436

11/28/2023, 6:30 PM

Hi all, I'm moving this question here: https://pantsbuild.slack.com/archives/C046T6T9U/p1701196006333019