"Error storing Digest { hash: Fingerprint<8210e4baffa32e2b7f531d76924f977d15dda07da621707329d3d2bdacd7e886>, size_bytes: 2167569207 }: Input/output error"

Is there something I can do if the pex file is huge?

There isn't. That said, Pants 2.7.1+ and 2.8.x both store PEX files in a new way. Instead of storing the whole PEX file, its components parts (user code, PEX bootstrap code, 3rdparty requirements) are all stored separately. So for N requirements, 2+N zips are stored. If you're on Pants older than 2.7.1 or 2.8.x you should be able to upgrade and have that particular problem likely fixed. If you already are upgraded that means you have 1 requirement that's 2GB big on its own, and that we currently have no solution for.

and https://github.com/pantsbuild/pants/pull/13714 (thanks @enough-analyst-54434!) should allow for producing larger PEX “files” (because with

layout="packed"

they will emerge as directories instead). but i’m still interested in tracking down what the internal limitation is here: can follow https://github.com/pantsbuild/pants/issues/13401

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