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Hey Folks - I'm trying to get a new pants v1 project spun up, and I am following the "Getting Started > Installing Pants" guide: https://v1.pantsbuild.org/install.html I'm running into an error on the first set of commands:

To set up Pants in your repo, we recommend installing our self-contained 

pants

 bash script in the root (i.e. the "build root") of your repo:

curl -L -O https://pantsbuild.github.io/setup/pants && chmod +x pants

To verify that Pants bootstraps correctly, run:

./pants --version

That first command installs pants v2 - and then

./pants --version

yells at me because I don't have a

pants.toml

file with the version in it.

Is there a hard coded version I can put into that file instead of running this command from the documentation

printf "[GLOBAL]\npants_version = \"$(./pants --version)\"\n" > pants.toml

Or do I need to get a v1 build of the pants command?

Hey there, does anyone know when Pants will support multiple lock files (see here)? This is very important to us because having a single, global lock file does not allow conflicting versions of transitive dependencies.

Hi all! We hit an issue where

pip install -r constraints.txt

works fine, but pants resolving constraint hit this error:

pants.engine.process.ProcessExecutionFailure: Process 'Resolving constraints.txt' failed with exit code 1.
...
ERROR: Failed building wheel for fastparquet
...
FileExistsError: [Errno 17] File exists: '/private/var/folders/sp/r6qw31k954q4r3ytv2psppr80000gp/T/process-execution0CgoPz/.tmp/pip-req-build-phat6ajh/.eggs/numpy-1.21.2-py3.7-macosx-10.16-x86_64.egg'
...
ERROR: Failed cleaning build dir for fastparquet
ERROR: Failed to build one or more wheels

This is when building on Mac OS. And only one of our teammates hit this error, the rest (also using mac OS) built successfully. Any clue?

Hm, do you have the full output from the run?

Ugh, this vaguely rings a bell, I'm pretty sure I've seen something like this before.

Does this happen consistently at least for that user?

Yes. And we can’t repro on someone else’s machine

Ok, at this point it would help to get super heavy on the details. The full constraints.txt would help as well as the full output with

-ldebug --pex-verbosity=9

included. It's probably best to dump this all in an issue to anchor the debugging effort.

hi, im writing a couple of custom goals, one to verify built python packages, and the other to publish them to pypi i have got as far as target selection, but im not clear how/if i can invoke another goal from my goal (ie to build the package and i guess provide path to artefact) is it possible to call another goal from a goal in this way, or is there some build dependency magic im missing ?

hi! I’m trying to build a monorepo with internal dependencies and I am not sure I am doing it properly. Each dependency is a namespace library located in the

lib

folder, so for example the common library would be placed in

lib/common/namespace/common

(with the build file for each library as

lib/common/BUILD

). To include dependencies, I am adding things like

dependencies=["lib/common"]

to the library configuraiton, but I am not sure if: 1. I need to add them in

module_mapping

, eg,

"lib/common": ["namespace.common"]

2. If they re being picked up correctly, because I don’t know how to properly read

./pants dependencies

and they don’t show up in

./pants dependencies --type=3rdparty

Can anybody give me a hint to see if what I’m doing makes sense? Thanks!

Looks like https://github.com/pantsbuild/pants/issues/12870 is that ticket

Yeah. The command output gist has snips - hopefully the total output will be forthcoming and help narrow in.

Hi all,  I'm very pleased to announce our newest Pants Maintainer, @curved-television-6568! Since joining the Pants community just a few months ago, Andreas has made several prominent contributions, notably including adding Docker support. He's been engaged with the community, answering user questions on Slack and making new users feel welcome.  Given Andreas's commitment and contributions to the Pants project, we're happy to have him join the core Maintainer group, to help drive the project forward to ever greater success. Please join me in thanking Andreas for his contributions so far, and congratulating him on this well-deserved recognition!

Thank you, and congratz 🙂

Getting an odd error when trying to launch pants (inside a toolbox container):

Failed to launch child `/home/.../.cache/bootstrap-Linux-x86_64/2.6.1rc3_py39/bin/pants`: Os { code: 13, kind: PermissionDenied, message: "Permission denied" }

Even going to the resolved bin directory in my shell and running

./pants

fails with the same error. Any idea what might be going on? What's it trying to launch internally there?

He just posted the full output 🙏

Hopefully we can get some help on this asap, cuz it's quite likely that if Kyran is hitting this issue, our ML practitioners might too.

This is a bit of a doozy to debug since the error is fully in a pip subprocess - no Pants or Pex involved at that point. Is https://pypi.cbhq.net, perchance an insternal pypi repo we could leverage? The simplest workaround is to build a macOS wheel once - by hand, and upload it there. It looks like fastparquet only publishes pre-built wheels for Linux and Windows and so the mac users are being forced to build the wheel locally and hitting this error.

Yes, internal vendor is possible.

Ok, then I'll update the issue with that rec. That will allow you to move forward under your own control. Debugging the fastparquet cython extension build that uses setup_requires - which is deprecated ... ETC - is going to be very hard.

hi Pants, I'm trying to load a pex file into my sagemaker notebook but hit some error. I'm downloading the pex from s3 to local, which succeeds, but then

%pex_load tmp/ml_training_env.pex

fails. I put the code and output in the thread.

hi pants, dependency hell again 🙂 I have put myself in a weird situation where I think Pants is not properly detecting internal dependencies because we do some dynamic loading, and I don’t know how to solve this. Let’s see if I can explain.

Any idea why the dep on BitVector is not inferred?

# bv.py
from BitVector import BitVector

bv = BitVector(size=0)

# test_bv.py
from .bv import bv


def test_it():
    assert bv == 2

# BUILD file
python_library(
# Works if added manually
#  dependencies=["//:BitVector"]
)

python_tests(
  name="tests"
)

# Error
E   ModuleNotFoundError: No module named 'BitVector'

https://twitter.com/cczona/status/1437815247776194572 Pants Build retweeted: I love our OSS community. The generosity and warmth of the team stands out, and Andreas is exactly the right additi… https://twitter.com/i/web/status/1437815247776194572 Twitter Meet our newest Maintainer, @andreasstenius. https://blog.pantsbuild.org/meet-our-newest-maintainer-andreas-stenius/ He has made prominent contributions, notably i… https://twitter.com/i/web/status/1437813116218355713 Twitter