#20595 `__defaults__` should apply also for generated targets Issue created by kaos Describe the bug

# BUILD
__defaults__({python_source: dict(...)})

python_sources()

The

python_sources

target will generate a

python_source

target for each source file, but none of them will apply the specified default field values from the

__defaults__

declaration. (This is why we see/suggest using patterns like

__defaults__({(python_sources, python_source): ...})

.) Pants version

main

OS Any Additional info This is due to the

__defaults__

being applied to the

TargetAdaptor

during BUILD file parsing only, so the defaults in this case would have to target the

python_sources

generator, and not the generated targets to apply. This is not very intuitive and should be fixed. One possible idea is to have pants provide the applicable defaults when calling the generator, and it will be up to the generator to apply those defaults to the targets it creates, as it deems fit. pantsbuild/pants