#20805 Using complete_platforms that loads a resource (instead of file) should show an error Issue created by Jackevansevo Describe the bug repo example here: https://github.com/Jackevansevo/pants-complete-platforms-bug import sqlalchemy import greenlet def handler(): print(sqlalchemy.version) print(greenlet.version) Running

pants package :cloud_function

gives me the following build error

A distribution for greenlet could not be resolved for /home/jackevans/.cache/nce/67912efc04f9156d8f5b48a0348983defb964de043b8c13ddc6cc8a002f8e691/cpython-3.9.18+20240107-x86_64-unknown-linux-gnu-install_only.tar.gz/python/bin/python3.9.
Found 1 distribution for greenlet that do not apply:
1.) The wheel tags for greenlet 3.0.3 are cp311-cp311-manylinux_2_28_x86_64, cp311-cp311-manylinux_2_24_x86_64 which do not match the supported tags of /home/jackevans/.cache/nce/67912efc04f9156d8f5b48a0348983defb964de043b8c13ddc6cc8a002f8e691/cpython-3.9.18+20240107-x86_64-unknown-linux-gnu-install_only.tar.gz/python/bin/python3.9:
cp39-cp39-manylinux_2_38_x86_64
... 809 more ...

If I use

resource(name="platforms", source="platforms.json")

Instead of

file(name="platforms", source="platforms.json")

Inside the following

BUILD

python_sources(name="root") python_requirement(name="sqlalchemy", requirements=["sqlalchemy"]) python_requirement(name="greenlet", requirements=["greenlet"]) python_google_cloud_function( name="cloud_function", complete_platforms=[":platforms"], handler="app.py:handler", type="http", ) resource(name="platforms", source="platforms.json") [GLOBAL] pants_version = "2.20.0" backend_packages = [ "pants.backend.python", "pants.backend.google_cloud_function.python", ] [python] interpreter_constraints = ['==3.11.*'] IMO attempting to mistakenly use a

resource

instead of a

file

when loading

complete_platforms

should throw an error or at least show a warning when building

python_google_cloud_function

targets. The

complete_platforms

docs state

Complete platforms should be addresses of file targets that point to files that contain complete platform JSON as described by Pex (https://pex.readthedocs.io/en/latest/buildingpex.html#complete-platform).

But would be nice if this could be turning into a warning/error. Pants version 2.20.0 but also tested on 2.19* OS Both! Additional info An equivalent

pex_binary

target that uses the same

complete_platform

resource works. The following builds with no issues (despite

:platforms

being a

resource

). pex_binary( name="main", entry_point="app.py", complete_platforms=[":platforms"], ) pantsbuild/pants