Hi 👋 , I’m currently working for a small startup called https://www.myst.ai/. We’re building a time series forecasting platform to help energy companies predict load / generation. I’m investigating migrating our current multi-repo setup to a monorepo. We currently have shared libraries distributed through a private PyPI server but propagating bug fixes / changes has become cumbersome. Pants looks really promising so excited to dive into it!

That sounds amazing. I'm an infrastructure / utility nerd who also cares a lot about climate change. I hope Pants can help you all out!

That’s awesome, I’m in good company! it’s been fairly smooth so far. I do have some questions on how pants interacts with namespace packages. Our current repository structured with pants-related metadata included (which we aren’t married to) would be something like:

/3rdparty
  requirements.txt
  BUILD
/lib
  org-project-1/
     org/
       __init__.py # we declare `org` as a namespace package here using `pkg_resources`
       BUILD
       project_1/
          __init__.py
          BUILD
  org-project-2/
      org/
        __init__.py # also here
        BUILD
        project_2/
           __init__.py
           BUILD
pants.toml

First naïve question is: I’m having some trouble getting Pants to run tests in either of the two namespace packages (

org.project_1

and

org.project_2

) since it can’t find the

pkg_resources

module. I’ve tried adding

setuptools

(which ships with pkg_resources) to

3rdparty/requirements.txt

but Pants still can’t find

pkg_resources

. Is there something obvious I’m forgetting to do? Thanks 🙂

That's neat. I love hearing how Pants is helping devs do good in the world. How did you hear of the project?

@busy-vase-39202 IIRC through a talk I found on Youtube a couple of years ago!

So still having issues with

pkg_resources

? Assuming you're importing from it, dependency inference should pick that up and add a dep on your

3rdparty

setuptools

Adding the explicit dependency works! Not sure why it wasn’t being picked up

Oh, is this in an

__init__.py

file? If so, set

[python-infer].inits = true

in pants.toml: https://www.pantsbuild.org/docs/python-backend. Sorry, that's a really common gotcha

Ahh yes, that was in an

__init__.py

file! That did the trick 🙏