@brief-scientist-13682 I may be hitting a

pex

issue as a follow-up from https://pantsbuild.slack.com/archives/C046T6T9U/p1764087004690069 Thanks to your fix, I can now generate a lockfile where I have this pants.toml config

[python.resolves_to_only_binary]
__default__ = [":all:"]

[python.resolves_to_no_binary]
__default__ = ["pyspark"]

However, when I try to package a pex where

pyspark

is a dependency, I hit this failure:

ProcessExecutionFailure: Process 'Building 3 requirements for subprojects.example.src.python.example.app.pyspark_job/job.pex from the subprojects/example/3rdparty/python/lockfile.jsonc resolve: dd-internal-pyspark>=1.0.0, numpy>=2.3.0, pyspark' failed with exit code 1.
stdout:

stderr:
Failed to resolve compatible artifacts from lock subprojects/example/3rdparty/python/lockfile.jsonc for 1 target:
1. /Users/gregory.fast/.pyenv/versions/3.12.10/bin/python3.12:
    Failed to resolve all requirements for cp312-cp312-macosx_15_0_arm64 interpreter at /Users/gregory.fast/.pyenv/versions/3.12.10/bin/python3.12 from subprojects/example/3rdparty/python/lockfile.jsonc:

Configured with:
    build: False
    only_build: pyspark
    use_wheel: True

Dependency on pyspark not satisfied, 1 incompatible candidate found:
1.) pyspark 3.5.2 does not have any compatible artifacts:
    <https://depot-read-api-python.us1.ddbuild.io/magicmirror/magicmirror/@current/files/pyspark/3.5.2/sha256%3Abbb36eba09fa24e86e0923d7e7a986041b90c714e11c6aa976f9791fe9edde5e/pyspark-3.5.2.tar.gz>
    requirers:
    via: pyspark
    via: dd-internal-pyspark>=1.0.0 -> pyspark==3.5.2

The artifact URL (from an internal index) is totally valid, that pyspark-3.5.2.tar.gz is there. With

only_build: pyspark

, I would expect this artifact to be compatible.

Yeah, definitely a Pex bug. I'll be slower than usual over this holiday.

Of course, have a happy thanksgiving! Thanks for confirming

Thank you so much, I really appreciate it. I’ll try out the fix tomorrow