Ergonomic, hermetic, user-friendly software build system for Python, Go, Java, Kotlin, Protobuf, Scala, Shell. Pants lets you fearlessly scale up your codebase!

Pants

What is the best command to see which projects will throw a `pants.source.source_root.NoSourceRootError`? Right now I'm running my plugin command and getting these errors one by one because I have some mistakes in my `pants.toml`.

`./pants roots` will show what Pants classifies as a source root in general.

To trigger that particular error, You need to run something that considers source roots:
* `test`
* `lint` with Pylint in particular
* `run`
* `binary`/`package`/`setup-py`

Did you make changes to your `[source]` section recently in the upgrade?

I didn't have "/" in the `root_patterns` list.

(Although taking it out let me find all the places that we are breaking our pattern.)

`./pants roots` doesn't throw an error if `root_patterns` is missing some patterns.

This is an edge case that has more to do with how long our repo has been using `pants` than it does with the upgrade.

Some of what we are doing should of been refactored when we upgraded to v1.8.0. :slightly_smiling_face: