pantsbuild #general

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happy-kitchen-89482

03/10/2021, 5:53 PM

Other than enumerating the underlying dists one by one?

high-egg-2153

03/10/2021, 9:03 PM

Is there anyway to force pants to rebuild everything when packaging? I need to increment the version number of my libraries before deployment. I created a plugin as per the documentation that does the trick. For now it reads the version from a file in the repo root. The plugin adds the version to the PKG-INFO and setup.py of all my wheels. However, when I increment the version number and re-run package, it seems to just use a cached version. I tried making the file containing the version number a dependency in the python_distribution target thinking it would see a change and rebuild, but no luck.

average-australia-85137

03/11/2021, 7:43 PM

Hello! A quick plugin question - is it possible to supply input on stdin to a

Process

average-australia-85137

03/11/2021, 7:58 PM

oh maybe another quick question? Is anyone using emacs and able to get the pants dependencies on in their environment so xref will work?

echoing-farmer-15630

03/11/2021, 8:01 PM

Rather foolish-feeling question; how does one handle tests in a separate directory from source? I may be missing something; I have (actual filenames changed):

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mylib/
  requirements.txt
  BUILD
  mylib/
    python source files...
    BUILD
  tests/
    python test files with lots of 'from mylib import...'
    BUILD

mylib/BUILD

just has a

python_requirements

target to build the requirements in requirements.txt.

mylib/mylib/BUILD

just has a

python_library

target with

sources=["**.py", "/***.*py"]

, and

mylib/tests/BUILD

has a

python_tests

target with

sources=["***/*.py"]

and

dependencies=['//mylib/mylib']

. But when I do

.pants test mylib/tests

, it looks like it resolves third-party requirements (and first-party; no complaints until pytest starts), but all of the

from mylib import ...

statements get me

cannot import name XXX from mylib (unknown location)

. So there's something I'm missing in how dependencies are resolved or copied or some such. Doing

pants dependencies mylib/tests

gets me entries like

mylib/mylib/submodule/__init__.py:../../mylib

, if that helps at all. I feel like I'm missing somethang that's just stonking obvious, but I'm not clever enough to diagnose it, it seems.

user

03/11/2021, 9:56 PM

https://twitter.com/stuhood/status/1370084777211035648 Pants Build retweeted: Let's try out this office hours thing! If you're interested in chatting about OSS, @pantsbuild, build tools, distri… https://twitter.com/i/web/status/1370084777211035648 Twitter

user

03/11/2021, 11:01 PM

https://twitter.com/pantsbuild/status/1370147767222292481 We agree, and are proud of having a welcoming and kind community, of devs, by devs, for devs. Twitter Reminder: When you send a message in an issue or PR to an open source project, you are usually talking to someone w… https://twitter.com/i/web/status/1369609358024261633 Twitter

bored-art-40741

03/12/2021, 12:11 AM

Hey everyone, pants old-timer here getting back into the fray. I'm going to be working on bringing JVM support to the new pants engine, so if that's something you're interested in, hit me up!

❤️ 11

👍 4

☕ 8

important-policeman-13818

03/12/2021, 7:51 AM

Hey folks! I’m not sure what’s the right place to ask questions. So I’ll repost here too.

bored-art-40741

03/13/2021, 7:29 PM

Ah boostrapping pants, it's been too long

bored-art-40741

03/13/2021, 7:29 PM

Copy code

./pants
Building native engine
error: failed to download from `<https://crates.io/api/v1/crates/adler/0.2.3/download>`

Caused by:
  [77] Problem with the SSL CA cert (path? access rights?) (error setting certificate verify locations:
    CAfile: /usr/lib/ssl/certs/ca-certificates.crt
    CApath: /usr/lib/ssl/certs)

Failed to build native engine.

bored-art-40741

03/13/2021, 7:29 PM

From Googling it looks like an issue with how libcurl was built against NSS, but installing more NSS packages didn't seem to fix it

average-australia-85137

03/15/2021, 1:28 PM

I asked in the plugins channel but... it seems like this is a little more active: https://pantsbuild.slack.com/archives/C01CQHVDMMW/p1615558556008300 Do people know a nicer way to strip the source roots of all dependent files?

happy-kitchen-89482

03/15/2021, 10:25 PM

Hi all, feel free to chime in on re community structure https://pantsbuild.slack.com/archives/C01L1J4EVTP/p1615847087002000

👖 3

happy-kitchen-89482

03/16/2021, 12:19 AM

I notice in our integration test infra that integration tests aren't hermetic in practice if

use_pantsd=True

, even if

hermetic=True

many-agent-62725

03/16/2021, 2:20 PM

Hello! In version 1.X of Pants, the target

python_tests

has the property `coverage`:

Copy code

coverage: A list of the module(s) you expect for this test target to cover. Usually, Pants and pytest-cov can auto-discover this if your tests are located in the same folder as the python_library code, but this is useful if the tests are not collocated.

However, in version 2.X, I noticed there’s no such property. What’s the equivalent one in Pants 2.X?

nutritious-hair-72580

03/17/2021, 10:49 AM

I also missed in the docs that

python_library()

is required for tests to do imports (relative in my case). I only picked this up by looking at the example-python repo. Say i have • project1 • project2 ◦ some-nesting ▪︎ greet • greeting_test.py • greeting.py • BUILD Then to do

import Greeting from .greeting

in the test file, i need to both have the source root as

/project2/some-nesting

and in the build file

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python_library()
python_test(name="greet")

Reading the docs (https://www.pantsbuild.org/docs/python-test-goal), I got the impression that python_library was only required for test utils and/or binaries.

happy-kitchen-89482

03/17/2021, 6:28 PM

https://news.ycombinator.com/item?id=26484526

👍🏻 1

brash-baker-91190

03/17/2021, 7:11 PM

Is there a requirement that the

pants

script be located in the root of a repository, or is that just a convention? Would anything break horribly if we were to move it into, say, a

bin

directory in the repo?

user

03/19/2021, 1:42 AM

https://twitter.com/pantsbuild/status/1372725085669232640 Reducing the BUILD file maintenance burden is a BFD! Watch this space for an upcoming announcement about an exciting new feature in Pants Build… https://t.co/DrmSysOIIJ Twitter

witty-crayon-22786

03/19/2021, 3:18 AM

https://pantsbuild.slack.com/archives/C18RRR4JK/p1616123897004300

❤️ 4

busy-vase-39202

03/19/2021, 5:16 AM

Congratulation to @hundreds-father-404 and @happy-kitchen-89482, who will each be giving a Pants talk at Pycon! 🐍👖 I'll leave it to them to tell you what their respective talks are. I'm excited that a whole new group of Pythonistas will be discovering Pants v2 in May. I think this may even be the first time Pants has ever been presented at a Pycon...?

🙌 3

busy-vase-39202

03/19/2021, 5:26 AM

Pycon is the flagship conference of the Python community, and has always been one of the highlights of my year. Ticket prices start at just $50 https://us.pycon.org/2021/registration/information/ and the money is invested back into the Python Software Foundation's important work on behalf of Python-lang as well as provides direct support to Python communities around the world and OSS projects such as Beeware, PyPI, and CPython. https://www.python.org/psf/sponsorship-new/#impact

happy-kitchen-89482

03/19/2021, 5:42 AM

Thank you thank you!

happy-kitchen-89482

03/19/2021, 5:43 AM

My talk will be "Creating extensible workflows with off-label use of Python", which is based off lessons we learned from our creative uses of Python features in the implementation of Pants v2

👍 1

user

03/19/2021, 3:46 PM

https://twitter.com/pantsbuild/status/1372937393154629632 As promised, a BFD: Announcing

tailor

- an exciting new features that generates BUILD file metadata for you, making adopting Pants easier than ever! https://t.co/4I8vdkpcxe Twitter

👍 1

✂️ 2

🧵 1

hundreds-father-404

03/19/2021, 11:04 PM

Hey mac users, we're hoping to start building pantsbuild.pants with macOS 10.15 Catalina, whereas now we build with macOS 10.11 El Capitan. This means that Pants 2.4+ would likely no longer work on macOS before 10.15 Catalina. Would this be a barrier to anyone? (Why do this? We're trying to finish switching from Travis CI with GitHub actions because Travis jacked up prices, and GitHub doesn't have older mac versions.)

bored-art-40741

03/21/2021, 9:13 PM

Any idea what MyPy is trying to tell me here?

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src/python/pants/backend/experimental/jvm/goals/repl.py:9:1: error: Module
'pants.backend.experimental.jvm.goals.coursier_resolve' does not explicitly
export attribute 'MavenRequirementsField'; implicit reexport disabled 
[attr-defined]
    from pants.backend.experimental.jvm.goals.coursier_resolve import (
    ^

bored-art-40741

03/21/2021, 9:14 PM

I lifted this particular pattern directly from the Python backend, and I can't find any special annotations or consideration for the way it "exports" types from modules

bored-art-40741

03/21/2021, 9:15 PM

Doh, of course the rubber duck strikes again