Hi, I'm trying to build a lambda zip from a target, but I'm getting the following exception:

Failed to resolve for platform linux_x86_64-cp-38-cp38. Resolve requires evaluation of unknown environment marker: 'python_full_version' does not exist in evaluation environment.

I'm using Poetry to manage dependencies. I generated the

constraints.txt

file running

poetry export --dev --without-hashes -o constraints.txt

, and it contains lines like this:

isort==5.10.1; python_full_version >= "3.6.1" and python_version < "4.0"

which makes me believe that's related to the error. Could that be the case? Appreciate your help, thank you!

question about how

[python-bootstrap].search_path

works: it doesn’t seem to care about the order in which arguments are passed? we support both python 3.8 and 3.9 on our monorepo, and currently explicitly declare these in `pants.toml`:

[python]
interpreter_constraints = [">=3.8,<3.10"]

[python-bootstrap]
search_path = ["<PYENV_LOCAL>", "<PYENV>", "<PATH>"]
names = ["python3.9", "python3.8", "python3", "python"]

m1 macs only work with python 3.9 because of incompatibility issues, but i would expect this not to be a problem since we use pyenv to set the local (and global) python version to be 3.9. however, since python 3.8 is also installed on my machine as part of Xcode’s command line tools, it seems like pants always uses 3.8 from

<PATH>

regardless of the order in

search_path

(i guess it’s using the paths in alphabetical order?)

pex.environment.ResolveError: A distribution for sqlalchemy could not be resolved in this environment.Found 1 distribution for sqlalchemy that do not apply:
1.) The wheel tags for SQLAlchemy 1.4.31 are cp38-cp38-macosx_10_14_arm64 which do not match the supported tags of DistributionTarget(interpreter=PythonInterpreter('/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.8/bin/python3.8', PythonIdentity('/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.8/bin/python3.8', 'cp38', 'cp38', 'macosx_12_0_arm64', (3, 8, 9)))):

the only way i can get pants to use the correct python version is if I set

search_path

to not include

<PATH>

at all. I would expect that the paths and names are searched in the order they are provided, i.e. first check

<PYENV_LOCAL>

for the first of

["python3.9", "python3.8", "python3", "python"]

that exists, next check

<PYENV>

, and so on

Is there a

./pants deploy {target}

somewhere? I could swear I saw that at some point in the past - but now I feel like I'm making it up

I've noticed my browser doesn't support whatever character Pants uses for the red X:

[Step 5/7] ✓ flake8 succeeded.
[21:56:22]
[Step 5/7]    mypy failed.
[21:56:22]
[Step 5/7] ✓ pylint succeeded.

From my CI And in GH PR:

𐄂 ConditionallySucceedsChecker failed.
        𐄂 FailingChecker failed.
        ✓ SuccessfulChecker succeeded.

I’ve recently discovered there is a decent support of

BUILD

files in PyCharm and VSCode via the Bazel plugin 🙂

I'm running

pants test

in CI and I want to get the list of failed test in a structured output, but also have the dynamic UI in CI. Is it possible?

is order enforced during

./pants package ::

or

./pants build ::

while I wait for go + protobuf support, I am wondering if it’s possible to use https://www.pantsbuild.org/docs/run-shell-commands target to compile the proto files manually before processing the go build process

Hello, I am trying to run tests for the first time using pants.

src
├── projects
│   └── one_shot
│       ├── one_shot              <------- source code
│       ├── requirements.txt
│       └── test_one_shot         <------- test code, requires one_shot and sail to be installed
└── sail                          <------- old source code

Running

./pants test  ./src/projects/one_shot/test_one_shot/test_file.py

will fail because the

sail

package is not installed. How can I specify this dependency on first-party code in a BUILD file ?

Hi again, Question regarding deploying source code into docker. Do we need to have pants in the docker image in order to build and run the service ? If yes, is there any standard of how to do it ? If no, how do we build the projects and its dependencies in the image ?

is

go vet

https://pkg.go.dev/cmd/vet supported under pants 2.10 or 2.11 dev releases ? I looked at the docs and I don't see it mentioned there. https://www.pantsbuild.org/v2.11/docs/go

Hi, Setting up Pants from scratch (after deleting the .cache/pants directory) lead to an error:

>> ./pants tests target
 [ERROR] 1 Exception encountered:

  FileNotFoundError: [Errno 2] No such file or directory: '.cache/pants/setup/bootstrap-Darwin-x86_64/pants.0fpKJL/install/lib/python3.9/site-packages/pants/backend/python/subsystems/pytest_lockfile.txt'

The pytest_lockfile.txt is missing and prevents pants from running tests. Any idea of how to resolve this issue ?

Sorry for the spamming ! I have a more complex situation. The python project I work on has conda dependencies. I tried to create a fresh conda env, install the binary (non python) dependencies and then run

pants tests

. Unfortunately, these binaries are not detected. Any idea of how to solve this issue ?

Hi all, It's my pleasure to announce that Rhys Madigan has joined the official ranks of the Pants project, as a Contributor. Rhys joined the community a few months ago, and among his contributions to the project so far: • Added duration and cache source to test output • Printing a warning when trying to build cloud functions on MaOS • Updates to the Python module mapping. Rhys brings a thoughtful, informed and inclusive perspective to discussions about the user experience, which his work has helped improve. We look forward to more contributions from him in the future. Congrats Rhys! Thanks for your work so far, and welcome to the team.

And while we're on a roll... I'm very pleased to announce that @wide-midnight-78598 (Suresh Joshi) has been recognized as a Pants Contributor! Since joining the community SJ has been a regular and friendly presence on Slack. He's submitted a significant PR for experimental PyOxidizer support, and has blogged about how to write a plugin, based on his experience doing so. He has more plugin contributions in the pipeline, and is excited to get more involved. Congrats SJ! Thanks for your contributions so far, and welcome to the team!

Is there a speific option for docker to use my docker.io login for pushing docker images? I can push my docker image, build with Pants manually, but

./pants publish ...

always fails with

denied: requested access to the resource is denied

Is it possible to run

./pants --changed-since=origin/main --changed-dependees=transitive test

but exclude test suites that contain a pattern? (eg

*integration*

)

hello pants. I've been trying to follow the

Incremental Adoption

-section in the documentation but got stuck at running

./pants count-loc '**'

. it fails with: BinaryNotFoundError: Cannot find

unzip

on

['/bin', '/usr/bin', '/usr/local/bin']

I'm on NixOS and unzip is indeed not located in any of those paths (by design), but it's available through

$PATH

. any hints?

Is there a version of

file

or

resource

that allows pulling from a URL? I see

jvm_artifact

has a

url=

option for pulling third-party jars, and in a plugin you are given

DownloadFile

https://www.pantsbuild.org/docs/rules-api-file-system#downloadfile if you write a custom plugin

Sorry if this has already been asked, but I am wondering how I can get linting to work in VS Code in a consistent way with the pants cli. In my pants.toml file, I have added some python specific linting backends like this

[GLOBAL]
pants_version = "2.9.0"
backend_packages = [
    "pants.backend.python.lint.black",
    "pants.backend.python.lint.flake8"
]

How do I correctly set up my path such that VS code is able to find the executable for

black

and

flake8

to allow it to invoke those linters/formatters? I am creating a virtual environment the pre-export way but I don't see black or flake8 binaries in the bin directory for that venv

Another question: When writing a plugin, I want to basically do this:

import zipfile 

def myrule(input: artifact....):
     with (zipfile.open(input.relative_path, 'r') as inzip, zipfile.open(input.output_path, 'w') as outzip):
        for f in inzip.files:
            outzip.write(f.name.replace('someprefix/', ''))

I see the

Process

object as a way to execute a shell command, but in this case I can do everything I want in no-deps python. Do I need to write the script and use

Process(['python3', 'myscript.py']....)

or is there an easier way?

New blog post! @fresh-cat-90827 gives a thoughtful look at various options and considerations when choosing a Python interpreter for your Pants project: https://blog.pantsbuild.org/choosing-a-python-interpreter-for-a-pants-project/

is there a way to see dependencies in a tree format? i’m trying to find what dependencies are used by a certain (first-party) module (A), and this works:

./pants dependencies --dependencies-transitive src/path/to/module_A.py

however, i’m trying to understand how another package (module B) is getting called, and i’d like to be able to see the tree from module B to A

Currently

./pants paths

raises a ValueError if there is not at least one dependency path between the --from and --to targets. I think that it should instead emit an empty list.

I’ve got a

pip

related question, fishing for community experiences/knowledge. 🎣

heya i got a question regarding poetry and lockfiles. I've been trying to make sense of all the issues regarding this topic but I'm confused: • is it currently possible to respect poetry.lock ? • is it currently possible to have a poetry.lock for each project in the repo? • if not: is any of that planned/on the horizon ?

Hey, I’m trying to use my own setup.py. I have a BUILD file with the following configuration, python_distribution( name=“django_shared”, dependencies=[ ], provides=python_artifact( name=“django_shared”, version=“0.1.0”, ), wheel_config_settings={“--global-option”: [“--python-tag”, “py3"]}, generate_setup=False, ) And on the same the directory I have a setup.py file setup( name=“django_shared”, version=“0.1.0", packages=find_packages(exclude=[“tests”]), package_dir={“django_shared”: “django_shared”}, install_requires=[“django_ninja”], ) But when I try to run ./pant package :: I end up with a file named UNKNOWN-0.0.0-py3-none-any.whl Someone knows how it works ? And could guide me on this ?

Hmm. Having some issues resolving the constraints file after adding a new dependency (

ring

) that I'm not really sure why it's happening from looking at the output. The constraints file comes from

poetry export

, and Poetry is able to install the dependency just fine. Logs in thread.

I'm just playing around with the docker-backend to build a python-project. the resulting dockerimage seems way to big (eg there are alot of tools contained that shouldnt be there). is there any way to influence that ?

I'm running into an issue while executing a package goal inside a Docker container where the symlink for the generated virtualenv is not resolveable during the packaging step.

Got an interesting dependency resolution issue. I added boto3-stubs to get better type hinting in my editor and now pants is thinking

boto3

maps to

boto3-stubs

and gets confused on imports. I can go manually add this dependency since it doesn't show up in too many places, but I'm surprised it's getting confused. I even updated my

module_mapping

to try to force the resolution, but it wasn't happy.