Hello, I am very new to pants and am trying to create a python 2.7 package so I set

interpreter_constraints=[">=2.7"],

in my

python_distribution

target. running pants package results in this error:

ProcessExecutionFailure: Process 'Run setuptools.build_meta:__legacy__ for 'scm:scm' failed with exit code 1.
stdout:

stderr:
Traceback (most recent call last):
  File "/private/var/folders/tx/j170snrj51x7vsqlr6gjgknm0000gn/T/pants-sandbox-n0BU4K/chroot/../.cache/pex_root/venvs/1286fe9e47a1c2e7c2f0b8f40834df0d199c016c/bbf665a577dacddf63ce4c741b47906e31dbdb6c/pex", line 230, in <module>
    exec ast in globals_map, locals_map
  File "backend_shim.py", line 21, in <module>
    os.makedirs(dist_dir, exist_ok=True)
TypeError: makedirs() got an unexpected keyword argument 'exist_ok'

Probably because 2.7 doesn't have the

exist_ok

arg. Couldn't find anything online about how to get this to work, anyone have any ideas what i'm doing wrong? This is a 2 and 3 compatible package, builds fine if i change it to

>=3.7

Can you provide the details surrounding the package? The full BUILD target and the full setup.py / setup.cfg / pyproject.toml with redactions as needed?

Yep, will work on that when i successfully build it with python 3, this is what's in the package :

# DO NOT EDIT THIS FILE -- AUTOGENERATED BY PANTS

import os
import setuptools.build_meta

backend = setuptools.build_meta.__legacy__

dist_dir = "dist"
build_wheel = True
build_sdist = True
wheel_config_settings = {
    '--global-option': [
        '--python-tag',
        'py37',
    ],
}
sdist_config_settings = {
}

os.makedirs(dist_dir, exist_ok=True)
wheel_path = backend.build_wheel(dist_dir, wheel_config_settings) if build_wheel else None
sdist_path = backend.build_sdist(dist_dir, sdist_config_settings) if build_sdist else None

if wheel_path:
    print("wheel: {wheel_path}".format(wheel_path=wheel_path))
if sdist_path:
    print("sdist: {sdist_path}".format(sdist_path=sdist_path))

So, bad Pants

so i think it's made by pants somehwere lol

Yeah, we get in your way here.

Sure, can do

Thank you.

happens to us all haha

Pants gets away with generally not having to worry about this because Pex handles 2.7 and Pants delegates most user Python handling to Pex. I maintain Pex and am looking to drop 2.7 support when Red Hat drops commercial support. Can I ask you what your 2.7 use-horizon looks like?

working on it right now, many services are in python3 but it's taking.. time to move a few. Hence the creating 2 & 3 compatible libraries as things are moved over 😅

Gotcha.

Thanks

Thanks for the bug report!

I'm on 2.14.1 right now, will upgrade when it's released, thank you for the quick turnaround!