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

Pants

People have queried and danced away from plumbing going back ~ year or so

oooo, potentially neat trick to roll out new tasks

`--config-override` containing alternate `backend_packages`

(context is slowly rolling out the deprecation of our internal fork of `./pants idea`)

hello guys! Do you guys know a good way to get all the 'sources' of a target 'dependees' through the pants cli?

`./pants filemap [target]` does this for a target

`./pants dependees src/python/pants/engine | xargs ./pants filemap`

Results look about right on that exact CLI in the pants repo

You get more thatn the file names, need to cut for the 1st field

So full thing cleanup up in pants repo:
```
$ (./pants dependees src/python/pants/engine | xargs ./pants filemap | cut -d' ' -f1) 2&gt;/dev/null
tests/python/pants_test/engine/test_engine.py
tests/python/pants_test/tasks/test_group_task.py
tests/python/pants_test/engine/test_round_engine.py
src/python/pants/bin/pants_exe.py
src/python/pants/bin/repro.py
src/python/pants/bin/plugin_resolver.py
src/python/pants/bin/goal_runner.py
src/python/pants/bin/extension_loader.py
src/python/pants/bin/__init__.py
```

I kind of missed filemap when I was going through all the goals

Hey <@U04S45AHA> and <@U053HHEDG>, does 3c61e0f328d87246233d583a77b31270e2a8a1a6 resolve <https://github.com/pantsbuild/pants/issues/2177>?

Though maybe the remainder of it was removed afterward? Looks like `jar_map_*` is only used one place now:
```
~/Src/Pants master * find src -name '*.py' | xargs grep 'jar_map_'
src/python/pants/backend/jvm/tasks/ivy_resolve.py:      if self.context.products.isrequired('jar_map_{conf}'.format(conf=conf)):
```

Yeah, but nothing requires those products any more AFAICT

Yeah looks that way. We should delete that code and close the issue once it’s gone in master

Do we have any officially supported versions of Scala (or any other languages)?

2.10 and 2.11 are both actively used by Foursquare and Twitter, respectively

So for example anything &lt; 2.8 can be abandoned?

Depends on what you mean.  I don't see a need to specifically forbid them unless we've somehow crossed a threshold where they're incompatible with the wrappers

<@U051221NF>: with both <https://rbcommons.com/s/twitter/r/3037/> and <https://rbcommons.com/s/twitter/r/3080/> in the pipeline, should we think about the language subsystems again? can bang that out quickly.