Is there any progress on the once discussed idea of being ab

Question

Is there any progress on the once discussed idea of being able to consume pre built `native engine so` when working on pants itself For those of us not working on the engine the need to rebuilt it every time we pull is a huge productivity drag

average-vr-56795 · Answer

`export MODE=debug` will save you minutes at the expense of a slightly slower pants

happy-kitchen-89482 · Answer

What does that do

aloof-angle-91616 · Answer

it turns off optimizations in the cargo build

aloof-angle-91616 · Answer

i would be a ridiculously huge fan of this

aloof-angle-91616 · Answer

would we serve it from some s3 which gets populated by a travis run

happy-kitchen-89482 · Answer

So we d still be building the engine it would just be a bit faster

happy-kitchen-89482 · Answer

Yeah we only need to populate it from master

happy-kitchen-89482 · Answer

come to think of it we already create it on S3 for every build

aloof-angle-91616 · Answer

that s what i was thinking

aloof-angle-91616 · Answer

i need to go to an appointment for an hour but i ll make an issue pr about this if nobody else gets to it first

average-vr-56795 · Answer

On my laptop a bit faster is like a 9 minute difference on a clean build

aloof-angle-91616 · Answer

is there a reason we can t default `MODE=debug`

average-vr-56795 · Answer

The problem with defaulting to `MODE=debug` is is slows down pants sometimes like 10x so people trying to use pants in source mode in large repos or do any kind of benchmarking will get really slow results and it may not be obvious why People should only need to re build the rust stuff proportional to when we make rust changes which is still pretty rare the big kicker is every 6 weeks they ll need to clean build because we update rust versions