hey everyone I m having fun using `pants` in anger in our se Pants #general

hey everyone! I'm having fun using `pants` in ange...

faint-monitor-7508

08/04/2025, 10:29 AM

hey everyone! I'm having fun using

pants

in anger in our setup here. I had a question about the verbosity of pants when it gets to a docker build command. I'm currently running:

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$ pants --no-dynamic-ui package --docker-build-verbose //projects/thing::

which is better than no extra args, but i still get to the docker build phase of our project where i see:

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10:23:08.22 [INFO] Starting: Building docker image .../projects/thing/thing-image:398de3074947ae6865ddd296ef7484d34433050c82c78adc727d78bcf59b4bb1 +9 additional tags.
10:24:38.08 [INFO] Long running tasks:
  89.86s        Building docker image .../projects/thing/thing-image:398de3074947ae6865ddd296ef7484d34433050c82c78adc727d78bcf59b4bb1 +9 additional tags.
...

where what im interested in is why this docker build is taking so long and so what is happening in the

docker build

... i.e. those

+9 additional tags

I can (kinda?) get around this if i force pants to keep the sandbox, then try to run the docker build myself from inside the sandbox..and there i can see the actual steps and what is slow, what isn't etc but is there a way to force pants to spit out the raw-est of raw outputs and just show me everything that is happening?

billions-sundown-65740

08/04/2025, 10:32 AM

did you try to run it with:

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pants --print-stacktrace -ldebug <rest of your command>

faint-monitor-7508

08/04/2025, 10:36 AM

giving that a go

faint-monitor-7508

08/04/2025, 10:37 AM

the interesting thing is all the things i've tried do indeed make everyting before the docker command be much much louder haha 😄 but then the docker command itself seems to quiet down 🙂 running with what you suggested though shall let you know

faint-monitor-7508

08/04/2025, 10:39 AM

ah hah ok... it printed the docker command it's running... now the output is hidden still...but maybe i can now see why

faint-monitor-7508

08/04/2025, 10:41 AM

hah ok... so it gives me the docker command it's apparently running...but i use that json to reconstruct that command and run from the sandbox, and THERE i see the whole output, like a normal

docker build

faint-monitor-7508

08/04/2025, 10:41 AM

but still in the pants command the output is hidden

faint-monitor-7508

08/04/2025, 10:41 AM

it also seems to have an env, maybe the reason is the env

faint-monitor-7508

08/04/2025, 10:43 AM

ah haha 😄 the message it's giving me is literally in the env vars:

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description: "Building docker image ... +9 additional tags."

what the hell

happy-kitchen-89482

08/05/2025, 8:27 PM

Isn’t that message from Docker itself?

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