Hi everyone, I need some help setting up a new pants project. I have followed the documentation but keep encountering this error:

$ pants tailor ::
Failed to fetch <https://binaries.pantsbuild.org/tags/pantsbuild.pants/release_2.16>: [22] HTTP response code said error (The requested URL returned error: 404)
Install failed: list indices must be integers or slices, not str
More information can be found in the log at: /Users/xxx/Library/Caches/nce/cf6c1988edaa5d40bbf385ae79a75e6d2abba937217d1b672c71eaf0ea495bcd/bindings/logs/configure.log

Error: Failed to establish atomic directory /Users/xxx/Library/Caches/nce/cf6c1988edaa5d40bbf385ae79a75e6d2abba937217d1b672c71eaf0ea495bcd/locks/configure-e319402acb9ab1284904d24db6ac2b1eca256b0be3313013dafa16b47301b665. Population of work directory failed: Boot binding command failed: exit status: 1

below is my

pants.toml

[GLOBAL]
 pants_version = "2.16"

 backend_packages = [
   "pants.backend.python",
   "pants.backend.python.lint.black",
 ]

I am using an M2 chip MacBook Air. I would appreciate any help with this issue. Thank you!

have you installed the pants launcher?

I do. I use brew install. Below is the messages I got.

==> Installing Cask pants
==> Linking Binary 'scie-pants-macos-aarch64' to '/opt/homebrew/bin/pants'
🍺  pants was successfully installed!

hm i’m wondering if this might be a bug - checking the links that the launcher is unable to fetch returns errors as well - i checked 2.16, 2.17 and 2.18 following the URL scheme

Thanks so much! I used Pants at my previous company, and now that I have some leisure time, I was thinking about contributing to the Pants project myself. So, I’m trying to familiarize myself more with the project, and here I am, encountering this issue. Interesting!

kismet 🙂

@bitter-ability-32190 does anything come immediately to mind?

I think you need to provide a specific x.y.z version:

pants_version = “2.16.0”

. The error message could definitely be improved a lot, because that is very hard to diagnose! Do you mind filing an issue on https://github.com/pantsbuild/scie-pants ? Thanks

ah that looks right - if i try to open

<https://binaries.pantsbuild.org/tags/pantsbuild.pants/release_2.16.0>

in a browser i get a prompt to download something as opposed to an error

I just created this issue, and it’s my first time doing so. I’m not sure if I did it right. Please take a look!

Ah yes, good eye Huon - the version needs to be precise.

My pleasure! I would like to try fixing it myself. Can you assign the issue to me?

That would be great! Let us know if you need any help digging into that code

Thanks! This is my pull request https://github.com/pantsbuild/scie-pants/pull/338

Nice! I've posted there asking @rough-vase-83553 for a status update

Thanks! I am working on that now. Thanks for @broad-processor-92400’s review! I have a newbie question: How do you debug in Pants? Are there tools like GDB or PDB that I can make use of?

Are you trying to debug code that pants is running (https://www.pantsbuild.org/docs/python-test-goal#debugging-tests), pants itself (https://www.pantsbuild.org/docs/contributions-debugging), or something in scie-pants (it's a rust program that involves python programs, so might be a bit hard to debug, depending on which part you're looking at) ?

I see. Then how do I run specific test I just wrote under

scie-pants/package/src/test.rs

?

Yeah, those are a bit awkward. I usually comment out all the other tests temporarily. Not the best, but it works okay

I see😅 Same here