pantsbuild #general

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freezing-motorcycle-14222

11/06/2015, 10:12 PM

Actually, now that I think about it you might want to defer the

./stack setup

step to

--install-ghc

enough-analyst-54434

11/06/2015, 10:12 PM

for a given ghc version

freezing-motorcycle-14222

11/06/2015, 10:12 PM

The reason is that the version of

ghc

is fixed by the

resolver

, which is part of the

target

enough-analyst-54434

11/06/2015, 10:13 PM

gotcha

freezing-motorcycle-14222

11/06/2015, 10:13 PM

That means that different targets will pull in (and isolate) different versions of

ghc

enough-analyst-54434

11/06/2015, 10:13 PM

I'm poking around for controlling ~/.stack

enough-analyst-54434

11/06/2015, 10:13 PM

Know offhand how to do that?

ancient-stone-50795

11/06/2015, 10:13 PM

Quotes from square today: "damn, pants is fast" and "...it's so much less bad than before pants" ?!?

enough-analyst-54434

11/06/2015, 10:13 PM

I like the latter as a tag line!

freezing-motorcycle-14222

11/06/2015, 10:14 PM

Haha

freezing-motorcycle-14222

11/06/2015, 10:14 PM

You can control

~/.stack

using the

STACK_ROOT

environment variable

ancient-stone-50795

11/06/2015, 10:14 PM

65% of our CI is now running Pants and folks who have been on the sidelines are starting to actually get around to typing

./pants idea myproject::

enough-analyst-54434

11/06/2015, 10:14 PM

aha - great

freezing-motorcycle-14222

11/06/2015, 10:14 PM

I learned about this when I opened an issue about this here: https://github.com/commercialhaskell/stack/issues/1178

enough-analyst-54434

11/06/2015, 10:15 PM

OK - I think I can whip up a basic subsytem here shortly for you to use in your RB

freezing-motorcycle-14222

11/06/2015, 10:32 PM

Oh nice! Thank you simple smile

lively-oil-86618

11/06/2015, 11:08 PM

Hello, Stu mentioned earlier that there is a team who would like to bundle a jvm_app that is a dependency to a junit_tests target. I'm on that team simple smile I have been trying to create a custom task to invoke the bundle task before the tests are run. However, I found that the bundle task only runs for the target_roots (bundle_create.py, line 66: for target in self.context.target_roots:) so even though I'm able to invoke the bundle task, it doesn't do anything.

lively-oil-86618

11/06/2015, 11:09 PM

Would it be possible to change this code to something like: for target in self.context.targets(predicate=xx.is_jvm_app) instead?

lively-oil-86618

11/06/2015, 11:09 PM

Or is there a good reason why bundle only runs for the target_roots?

witty-crayon-22786

11/06/2015, 11:56 PM

@ancient-stone-50795: ^ do you guys have an opinion on that one?

ancient-stone-50795

11/06/2015, 11:56 PM

@witty-crayon-22786: We don't use the bundle task currently. We have our own artifact format with lots of extra chunks and nuggets thrown in.

witty-crayon-22786

11/06/2015, 11:57 PM

interesting

witty-crayon-22786

11/06/2015, 11:57 PM

@bored-art-40741: you guys?

bored-art-40741

11/06/2015, 11:57 PM

That wouldn't bother us, though we don't want to use

.is_X

properties on targets any more

witty-crayon-22786

11/06/2015, 11:57 PM

@bored-art-40741: yea. they all end up being task methods now =P

bored-art-40741

11/06/2015, 11:57 PM

We forbid the kind of dependencies that would cause excessive bundling in that situation, so no biggy

witty-crayon-22786

11/06/2015, 11:58 PM

but cool, thanks.

witty-crayon-22786

11/06/2015, 11:58 PM

@lively-oil-86618: so, patch welcome!

witty-crayon-22786

11/06/2015, 11:58 PM

@lively-oil-86618: if you haven't contributed upstream before, it looks like http://pantsbuild.github.io/dev.html

lively-oil-86618

11/06/2015, 11:59 PM

ok, thanks everybody! I'll work on a patch.