Hi all! Is it possible to exclude some transitive dependency from pex_binary?

Yes, albeit you need a plugin for this

You mean define my own plugin, register rules from the python backend and override some specific rule that collects pex transitive dependencies, right?

There's a generic plugin interface for adding/subtracting deps

InferDependenciesRequest

? How does it help? I want to build a pex without a pyspark, my pex itself doesn't depend on the requirement ":pyspark", so adding "!:pyspark" doesn't help. It depends on pyspark transitively so it includes it into the pex binary

You could only match PEX binary targets, and use that request to exclude the deo (I believe it's applied transitively)

Have you tried excluding like

!!:pyspark

? This excludes transitive deps: https://www.pantsbuild.org/2.20/docs/using-pants/key-concepts/targets-and-build-files#dependencies-field

That might work, thanks!